TUP
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Poster Session 1
16 Sep 2025, 17:05 -
18:20
Chair: Keyu Zhou (MAX IV Laboratory)
TUP01
Airbox housing of the Jungfrau Detector for in Vacuum X-ray Diagnostics
29
At the European XFEL facility, ultrabright X-ray radiation is employed to investigate phenomena in a variety of sample materials with the highest spatial and temporal resolution. For X-ray detection, the scientific ‘Jungfrau’ detector is frequently employed, as it matches the parameters of the provided X-ray beams. Originally developed by the Paul Scherrer Institute for in-air use at the Swiss FEL, a detector housing has been designed and constructed at European XFEL to meet the requirements of in-vacuum operation at the scientific instruments for high-energy density physics (HED) and material-induced dynamics (MID) . The in-vacuum version of the Jungfrau detector is applied in various specialized diagnostics and methods aimed at resolving atomic lattice structures through X-ray diffraction, observing laser-induced microscopic material changes such as shock-wave dynamics via X-ray imaging and small-angle X-ray scattering, or probing plasma temperatures with inelastic X-ray spectroscopy. To exploit the coherence of the X-rays, the design includes a windowless X-ray photon beam path extending from the source to the sample and detector plane. This contribution presents the housing design for a single module and showcases fully integrated solutions for selected X-ray diagnostics, incorporating multiple modules to enhance functionality. selected x-ray diagnostics.
Poster: TUP01
Paper: TUP01
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP01
About: Received: 05 Sep 2025 — Revised: 14 Sep 2025 — Accepted: 14 Sep 2025 — Issue date: 02 Apr 2026
A new beamline for Enhanced Liquid Interface Spectroscopy and Analysis (ELISA) at BESSY II
The Enhanced Liquid Interface Spectroscopy and Analysis (ELISA) beamline at BESSY-II is engineered for cutting-edge liquid interface research. Integrating soft X-ray (40–3500 eV) and infrared (10–10,000 cm⁻¹) radiation, its dual-branch design optimizes beamtime efficiency and experimental versatility. ELISA features ultra-precise gratings (of 400, 1200 and 2400 l/mm line density, including Cr/C multilayer-coatings on the gratings and pre-mirror at the monochromator), special mirror coatings allow to cover the soft-to-tender X-ray energy range with high flux. Synchrotron-based IR integration ensures precise temporal and spatial correlation with sub-nanosecond resolution. Supporting ambient pressure X-ray photoelectron spectroscopy and reflection-absorption IR spectroscopy, the beamline adapts to variable sample environments. We present ELISA’s innovative design, technical specifications, expected performance, and development timeline, showcasing its transformative potential for interface science.
A new integrated x-ray diffractometer for advanced diffraction beamlines
The advent at last generation synchrotron sources of extremely brilliant beamlines combined with fast photon-counter detector and high throughput sample changers change the paradigm of beamtime use. The time required by the diffractometer to handle the sample is the new bottleneck for the beamtime throughput. At IRELEC, we developed a new x-ray diffractometer aiming to close the gap and accelerate the whole process while pushing the mechanical precision and stability to new standard that exceed the usual requirements at modern diffraction beamlines. To reach this goal, we combined fast and synchronic translations to setup the sample environment with a high precision rotation stage keeping the ensemble very compact to minimize the in-air beam path and make the sample to detector distance as small as possible. To demonstrate the performance during our qualification tests on a first prototype, we had to tackle metrology challenge. The device and its performance are presented as well as the comparison of different method to perform the metrology. The commissioning at Synchrotron beamlines of this new device will be performed end of 2025 at APS and beginning of 2026 at MAX IV.
Poster: TUP03
A new monochromator chamber design for XUV/ soft X-ray spectroscopy at FLASH
FLASH, the soft X-ray free-electron laser (FEL) in Hamburg provides high-brilliance ultrashort femtosecond pulses at MHz repetition rate for user experiments. For many spectroscopic and dynamical studies in various research fields a small FEL energy bandwidth and ultrashort pulses are a prerequisite. In order to increase the spectral resolution while still keeping the photon pulses short, a new double grating monochromator beamline has been designed$*$ and taken into operation at FLASH. The new ultra-high vacuum compatible monochromator chamber along with the diffraction grating holders were designed in-house at DESY in collaboration with HZB Berlin. In order to meet the required optics adjustment resolution and stability$**$ special care was taken on the stability and reproducibility of all mechanical movements. Here, we present the new monochromator chamber design. Based on the required specifications regarding resolution and accuracy, the technical implementation, including optics pre-alignment and test results, are shown.
Poster: TUP04
An overview of the mechanical design of the quad crystal monochromator for the I20 XAS beamline.
A new QCM design that has been developed to replace the existing system on the I20 XAS beamline at Diamond Light Source will be presented. The QCM adopts a 4-bounce channel-cut configuration eliminating beam offset, which features two Bragg axes covering an energy range of 4-35 keV, each housing two pairs of S111 and S311 crystals. Thermal challenges are present, with a typical power load of 600 W and up to 730 W for the D-II upgrade. The design addresses thermal challenges with an optimised direct and indirect LN2 cooling scheme. Precise crystal positioning is achieved by using very stable rotary and linear air bearings with high resolution alignment mechanisms. The design is influenced by prior FEA, thermal analysis, and mechanical tests to ensure a robust design ready for integration into the beamline.
Poster: TUP05
TUP06
An overview of the time-resolved capabilities and sample setup modularity at CoSAXS
33
CoSAXS is a multipurpose SAXS instrument located at the 3 GeV ring of MAX IV Laboratory in Sweden. This instrument provides a versatile platform for conducting Small-Angle X-ray scattering (SAXS) experiments on a wide range of research fields. With an extensive pool of sample environments, CoSAXS enables the application of multiple techniques and complex experiments on solid and solution samples. To accomodate the high demand and facilitate the rapid exchange of sample setups, a standardized mounting system has been implemented and additive manufacturing techniques are utilized for fast and efficient prototyping and production of customized sample holders. Furthermore, CoSAXS is equipped with advanced sample environments, such as the setup for milliseconds Time-Resolved SAXS-WAXS experiments in solution (TR-XSS). Among other studies it has been used in non-reversible protein reactions after laser activation of caged compounds.
Poster: TUP06
Paper: TUP06
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP06
About: Received: 30 Aug 2025 — Revised: 14 Sep 2025 — Accepted: 15 Sep 2025 — Issue date: 02 Apr 2026
Applying advanced manufacturing techniques to improve in-vacuum cooling within the SWIFT beamline.
SWIFT is one of the flagship beamlines being developed in the Diamond-II programme. As part of D-II upgrades, the electron beam energy will be increased from 3GeV to 3.5GeV, leading both to a brighter beam and higher power deposition onto beam conditioning components (filters, slits, beam shutters) presenting new thermal management challenges. These components are usually water cooled via a copper pipe loop brazed around the main component, requiring a double vacuum brazing process (copper-to-copper and copper-to-stainless-steel). Requiring multiple vacuum brazing passes, this approach is costly, complex, and restrictive. Following several iterations with suppliers, I developed a design which only requires one brazing process. This novel process involves drilling a borehole into the component and installing a stainless-steel helix (manufactured via laser sintering) designed to shape the coolant flow. In addition to the reduced cost the concept is applicable across a variety of components, allowing for more rapid designs, simpler assembly, and more design flexibility.
Poster: TUP07
TUP08
A safe and X-ray transparent aluminium sample cell for high pressure and high temperature nano-diffraction imaging
37
The European Synchrotron Radiation Facility beamline ID01 performs Bragg Coherent Diffraction Imaging and X-ray nano-diffraction experiments with in-situ environments. A new sample environment for nanoparticles has been designed and tested. It combines a furnace and a pressurized X-ray transparent chamber, without the use of beryllium for safety reasons. The required 180°C horizontal and 45°C vertical viewing angles necessitate the use of a dome-shaped pressure chamber. Early in the design phase, the thermal effects of the 500°C furnace on the dome’s mechanical properties were identified as critical. A Finite Element Analysis (FEA) study was conducted, accounting for heat sources, gas turbulence, and static pressure. Aluminium 6082-T6 was chosen for the pressurized dome, providing a safe and easy-to-procure solution. A dome thickness of 0.5mm provides 80% X-ray transmission at 33keV. The sample, a 200nm-diameter palladium nanoparticle, reaches 340°C in a 50-bar hydrogen atmosphere. Unlike beryllium-based pressure domes, this design uses aluminium, avoiding machining difficulties, procurement issues, and safety hazards.
Poster: TUP08
Paper: TUP08
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP08
About: Received: 18 Aug 2025 — Revised: 12 Sep 2025 — Accepted: 13 Sep 2025 — Issue date: 02 Apr 2026
Automated high pressure water cell - HPWC
The poster presents the development of a high-pressure water cell (HPWC) to be used at the diffraction beamline P02.1, at PETRA III depicting its mechanical design and the challenges to achieve operating pressures up to 10 kbar (1 GPa). A crucial part of this setup is on its automation, in which the pressure increments are introduced by means of a spindle-pump type compressor. The spindle pump is driven by a stepper motor, which is controlled by a PLC from the Beckhoff brand. The PLC monitors the pressures and temperatures and controls the motor and the valves of the system. The pressure is controlled by a PID-controller and the System has several different operation and safety routines that can be selected by the user. Two pressure sensors monitor the pressure in different positions. Inductive limit switches protect the pump from collisions and magnetic valves with pneumatic actuators split the system in different parts. The valves are also monitor by inductive limit switches. The HPWC consists of a hardened stainless-steel block with three main apertures: two in the beam direction with a set of diamond windows, and a dedicated port for sample loading.
Poster: TUP09
A wavelength-dispersive spectrometer for resonant inelastic X-ray scattering
Conventional X-ray techniques often lack the energy resolution, the efficiency or the polarization sensitivity required. In collaboration with the NIST the PTB has developed a new wavelength-dispersive spectrometer (WDS) capable of high-resolution XES and RIXS in the photon energy range from 80 eV to 1500 eV. The WDS finds its main applications in the investigation of low Z compounds and battery material research, the validation and development of theoretical calculation tools, and the accurate determination of x-ray fundamental parameters$*$. The innovative design is based on a modified Hettrick-Underwood geometry and is equipped with sets of variable line spacing (VLS) gratings and related spherical mirrors allowing for efficient collection and diffraction of X-rays$**$, $***$. In addition, the perpendicular dual detection arms enable simultaneous measurements in different orientations to the polarization plane of the incident synchrotron radiation. The incident monochromatized undulator radiation is focused down to a 7 µm spot size using a single-bounce monocapillary X-ray optics. A position-sensitive CCD camera is used as a detector in each arm.
Poster: TUP10
TUP11
Compact multi-purpose imager for the Matter in Extreme Condition end-station at LCLS
41
This paper presents the mechanical design of a new imaging system developed at the Matter in Extreme Conditions (MEC) instrument at the Linac Coherent Light Source (LCLS) to improve setup efficiency while maintaining high-quality imaging performances. We designed an in-vacuum setup for imaging both the focal spot of a laser and the targets themselves. The system integrates high-resolution optics, remote positioning relative to the interaction point and control system. It supports spot sizes from 2 to 600 µm and spatial resolutions down to 1 µm. Using kinematic mounting features, we ensured repeatability of internal components positioning and user-friendly way when modifications are needed. The system is versatile as it accommodates different laser wavelengths, it can function as a confocal imager for precise target positioning and its compactness allows it to fit in various experimental geometries. Additionally, the system includes vacuum-compatible, adjustable wavelength filtering and attenuation that maintain optical alignment. Finally, a shutter protects the high-resolution optics from target debris while the whole imager is fully retractable to further clear the target area.
Poster: TUP11
Paper: TUP11
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP11
About: Received: 30 Aug 2025 — Revised: 18 Sep 2025 — Accepted: 18 Sep 2025 — Issue date: 02 Apr 2026
Controlling of a nano imaging test device
In preparation for the accelerator upgrade "PETRA IV" at DESY, a nano imaging test device for the experiment end stations, called SPIDER, is under development. Aside to new concepts for the ultra stable mechanical design, the controlling of the mechatronical parts and sensors as active feedback plays another important role. The device is driven by different motor types like steppers, servos and piezos. For synchronization purposes most of the controllers are connected via a real-time bus which is led by one master real-time controller (plc). All axes are equipped with nanometer resolving encoders and the sample holder is monitored by a laser interferometer. With these sensors as feedback, the master plc can not only monitor all axes but also provides capabilities for online correction of mechanical imperfections and active damping of vibrations. The poster will show the control structure together with measurement results from the prototype in the lab.
Poster: TUP13
CoSAXS beamline at MAX IV: optical design and sample environment for advanced SAXS/WAXS applications
CoSAXS is a versatile SAXS/WAXS beamline at the 3 GeV diffraction-limited ring of MAX IV Laboratory in Sweden. The optical design [$*$ ,$**$] delivers X-ray beams from 4–20 keV with 0.01% bandwidth and photon flux of 10¹²–10¹³ ph/s, with up to 10% coherent flux at 7.1 keV. Beam sizes at the sample range from 250 × 250 μm² to 30 × 15 μm² (FWHM). The SAXS detector (Eiger2 4M) moves longitudinally and transversely inside a 15 m vacuum vessel. The fixed WAXS detector (Pilatus3) is positioned at the vessel entrance, and a Mythen2 1K in air provides 1D WAXS. The q-range spans ~6 × 10⁻⁴ to 3 Å⁻¹ (d-spacings: 1 μm–2 Å). Supported techniques include solution and solid SAXS/WAXS, SEC/AF4-SAXS [$*******$], USAXS, TRSS in the ms range [$***$, $****$], and coherent scattering [$*****$]. Sample environments include magnetic fields, rheology, biaxial stretching [$******$], and microfluidics [$********$]. Control and data systems are described in [$****$]. After nearly 5 years of operation, CoSAXS has completed 190 proposals, including 19 proprietary research projects. The beamline has a high demand and has contributed to 47 publications.
TUP15
Creating a Multi-Capillary Furnace (MCF)
44
The Multi-Capillary Furnace (MCF) is a novel furnace design with four independent furnace units for use on the Spectroscopy beamlines at Diamond Light Source. This furnace offers users the opportunity for improved experimental efficiency by permitting up to four different samples in a reaction (e.g. catalysis reactions) to occur concurrently, with remote operation to allow for moving the different samples into the beamline path. Thermal isolation between each furnace, required to achieve the performance within a compact envelope, is achieved with integrated water cooling and ceramic insulation. This paper details the design of the MCF and presents the results from commissioning.
Poster: TUP15
Paper: TUP15
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP15
About: Received: 02 Sep 2025 — Revised: 12 Sep 2025 — Accepted: 13 Sep 2025 — Issue date: 02 Apr 2026
TUP16
CRISTALLINA-Q XFEL Diffractometers
47
In a well-known European free-electron laser facility (SwissFEL)$*$, a new branch(ARAMIS 3) of the beam line delivers hard X-ray to the CRISTALLINA experimental hutch. CRISTALINA-Q station inside, intends to investigate advanced materials focused on specific Quantum materials (QM) structures and processes. Two new heavy load dedicated Diffractometers (Dm)$**$ have been developed. They are heavy load precision machines which, through adequate techniques and instruments, under extreme conditions (temp, press, rad), working in tandem are expected to fastly advance the investigations. The first(CrQ-Dm1) is manipulating a large-size (h=2.5m) cryo-magnet (1t, 5.2T, -10mK) and the second one(CrQ-Dm2) a smaller pulse-magnet (0.6t, 50T, 30 rate) sample instruments. They are able to perform most of the investigations in horizontal scattering, but not only. From flexibility and versatility reasons, Dm(s) have been conceived with similar configurations, having each a high level of compatibility inside & outside, however exhibiting some distinct differences. The kinematic, design, simulations and precision principles applied, together with challenging aspects and results of tests are presented.
Paper: TUP16
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP16
About: Received: 05 Aug 2025 — Revised: 16 Sep 2025 — Accepted: 16 Sep 2025 — Issue date: 02 Apr 2026
TUP17
CXI experimental station at Softimax beamline MAX IV
51
A documentation of the design and production process of the CXI (coherent x-ray imaging) end station at SoftiMAX, a soft X-ray beamline at MAX IV. The station needs to allow practical removal from the beam allowing for visiting end stations. The diffracted light from the sample should be captured by a detector at a widely adjustable angle. The detector position longitudinally from the sample should be very adjustable both inside the chamber but also by extending the vacuum from ports on the side of the chamber. Going into key specifics of the mechanical solutions chosen to accommodate the scientific requests as well as describing the failures and solutions along the way.
Poster: TUP17
Paper: TUP17
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP17
About: Received: 09 Sep 2025 — Revised: 12 Sep 2025 — Accepted: 12 Sep 2025 — Issue date: 02 Apr 2026
TUP18
Design of a dedicated multilayer monochromator for electron beam size measurements using the Heterodyne Near Field Speckles (HNFS) technique at the ALBA synchrotron
54
Within the framework of the ALBA Diagnostics Group’s participation in a Future Circular Collider (FCC) collaboration, a dedicated setup for electron beam size measurement based on Heterodyne Near Field Speckles (HNFS) has been developed and installed at ALBA Front End 21 using radiation from a dipole bending magnet. The setup incorporates a high-energy (20–30 keV), high-bandwidth (~1.3%) monochromator, entirely designed in-house, along with the colloid sample environment and the detector system with their corresponding supports. The monochromator features a 300 mm Si substrate with W/B₄C multilayer coating and operates in a vertical Laue reflection geometry. To reduce complexity and for this HNFS-specific application, ultra-high vacuum (UHV) conditions and submicron precision mechanics are not required. The mirror assembly is housed within a standard DN400 CF chamber, mechanically coupled to the chamber itself. This chamber is mounted on a granite-based “skin concept” table, providing two degrees of freedom (vertical translation and tilt) for energy tuning and beam path insertion/retraction. The complete design of the set-up is presented in this paper.
Poster: TUP18
Paper: TUP18
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP18
About: Received: 05 Sep 2025 — Revised: 17 Sep 2025 — Accepted: 18 Sep 2025 — Issue date: 02 Apr 2026
TUP20
Scanning and transfer of cryogenic samples in the BioNanoProbe-II instrument at the Advanced Photon Source
58
A new hard x-ray fluorescence (XRF) nanoprobe in-strument called Bionanoprobe-II (BNP-II) has been designed and will be constructed at 2-ID-D of the up-graded Advanced Photon Source. BNP-II will take ad-vantage of the orders-of-magnitude increase in bright-ness and coherent flux with advanced sample scanning, metrology, cryogenics, and controls. These advancements will enable high-throughput XRF imaging under cryogenic conditions with 10 nm spatial resolution, 2D survey of mm-sized samples, and fast tomography for 3D visualization. BNP-II also introduces a novel robotic sample transfer system that interconnects a cryogenic plasma focused ion beam (cryo-PFIB) milling station alongside the x-ray nanoprobe. The interconnected instruments enable an iterative workflow between x-ray measurements and cryo-PFIB milling and maintains the integrity of vitrified samples by remaining below 110 K even during transfer. Regions of interest can be identified by fast large-area scans, after which the sample geometry can be optimized for nanoscale x-ray imaging and tomography. This work details the engineering advancements required to examine highly complex, multidimensional systems with BNP-II.
Poster: TUP20
Paper: TUP20
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP20
About: Received: 05 Sep 2025 — Revised: 12 Sep 2025 — Accepted: 14 Sep 2025 — Issue date: 02 Apr 2026
Design of the high energy microscopy beamline at Korea-4GSR
The High Energy Microscopy (HEM) beamline is being developed for X-ray projection imaging and computed tomography at the Korea 4th Generation Storage Ring (Korea-4GSR) currently under construction in Ochang, South Korea. The HEM beamline will deliver a fan beam with a horizontal size of 200 mm and a vertical size of 28 mm at the sample position located 100 meters from the 2-Tesla bending magnet source, with a critical energy of 21 keV. Projection imaging will be performed in two modes: a monochromatic mode using a double-multilayer monochromator and a filter array, covering the energy range of 5–40 keV, and a white beam mode with energies up to 100 keV. The end-station is positioned at 95 meters and will be equipped with a high-load air-bearing rotation stage to enable operando and in-situ experiments. For phase-contrast imaging, the sample-to-detector distance can be extended up to 20 meters, benefiting from the extremely small source divergence of approximately 0.1 μrad at the sample location. Large field-of-view images will be captured using a high-aspect-ratio detector composed of a high-resolution camera array.
TUP22
Designs of the first-phase beamlines for Siam Photon Source-II
61
Siam photon source-II (SPS-II) is a new synchrotron facility that is going to be built in Thailand. There are seven beamlines to be constructed together with the new machine. These consist of one soft X-ray beamline, two X-ray absorption beamlines, three X-ray scattering beamlines and one imaging beamline in the lineups. The designs and the selections of insertion devices, front end and beamline components will be presented together with the optical simulation results and the considerations for thermal load management using the combination of front-end components, filters, white/pink beam slits and mirrors along each beamline. New experimental station equipment and the existing equipment from the current Thai synchrotron facility (Siam Photon Source-I) that will be transferred to SPS-II will also be discussed.
Paper: TUP22
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP22
About: Received: 02 Sep 2025 — Revised: 15 Sep 2025 — Accepted: 15 Sep 2025 — Issue date: 02 Apr 2026
Development of a white X-ray beam monitor for the undulator beamline at Korea-4GSR
Korea-4GSR, a 4th generation synchrotron radiation facility under construction in Ochang, South Korea, will install ten beamlines in Phase-1, nine of which will use undulators as light sources. The central cone entering each beamline’s optics has a beam size about 1/10 that of the full white beam, requiring precise shaping and diagnostics at the front-end. The white beam from IVU24(In-Vacuum Undulator) reaches up to 18 kW power with a peak power density of 165 kW/mrad². Such high thermal loads can cause damage or vacuum failure with slight misalignments. Therefore, diagnostics must endure this load and provide accurate measurements. The diagnostic system must offer sub-100 µm resolution to detect beam size and position, while also managing heat. For this, scCVD(single crystalline Chemical Vapor Deposition) diamond is used to detect current signals and X-ray fluorescence, supported by a low-conductive water cooling channel. This presentation introduces the white beam monitoring system for Korea-4GSR undulator beamlines, including mechanical design, cooling system, and thermal analysis.
Energy distribution of photoelectrons from the first mirror of a synchrotron radiation beamline
Photoelectrons (PEs) are emitted from the surface of the first mirror of a synchrotron radiation (SR) beamline when irradiated with white x rays. It has been reported that the PEs transfer heat to the chamber walls and mirror holder, inducing thermal drift of the mirror and consequently causing beam position and energy drift. We designed a copper shield which covers the entire mirror surface to absorb the PEs. However, it was difficult to install due to its large size and hindered observation of the mirror surface, thereby making the maintenance of the mirror more difficult. To better understand the phenomenon of PE emission and to design a smaller and more efficient shield, we have conducted spectroscopic analysis of PEs involved in heat transfer using a retarding field energy analyzer at the beamline BL-11A of Photon Factory. The analyses revealed that the energy distribution of PEs is largely independent of the beam's angle of incidence on the mirror surface, and that most of the emitted power originates from PEs with energies in the 1-2 keV range, although more than half of the emitted PEs have energies below 100 eV.
Poster: TUP24
Engineering design of the CDI beamline endstation at NSLS-II
The Coherent Diffractive Imaging (CDI) beamline is one of the three advanced beamlines developed through the NSLS-II Experimental Tools (NEXT II) project at Brookhaven National Laboratory. This advanced hard X-ray beamline supports a photon energy range from 5 keV to 15 keV, enabling high-resolution imaging and characterization techniques. The CDI endstation integrated a custom-built beam conditioning system with an in-house-developed microscope, a six-degree-of-freedom sample positioning system, and a Two-Detector Motion System (TDMS). Key engineering challenges included achieving high stability, enabling nanometer-scale sample positioning, and developing a large-scale TDMS. The TDMS exceeds 9 tons in mass, occupies over 100 square meters, and is capable of independently and synchronously supporting two state-of-art X-ray detectors. The detectors can be positioned around the sample with up to 9 m of variable drift, and horizontal angular range of 125 degrees, and a vertical range of motion of about 1.65 m the scale, complexity, and novel architecture of the TDMS impose significant demands on interface engineering, presenting challenges that are arguably without precedent.
Poster: TUP25
TUP26
The MID Instrument of European XFEL: 2025 Upgrades and Experimental Setups
65
In this poster insights are given on some examples of 2025 Upgrades and Experimental Setups at the MID instrument of European XFEL. The latest design and implementation status of MID Multi-Purpose Chamber (MPC-2) Project are reported. This represents a set of upgrades and ongoing development of MID instrumentation, as well as the evolution of the current multi-purpose chamber, which has been successfully used at MID since the first experiments in 2019. The aim is to enable new types of scientific experiments and to expand the current capabilities. The MPC-2 Project includes: MPC-2 VESSEL Upgrade. We indicate here the most recent concept design status. MPC-2 INTERIOR Upgrade (MPC-2_IU). This consists of the following assemblies represented here: Bread-board Assembly, Laser In-coupling 2 (LIC-2), 2-theta Circle. Another aim of the MPC_2 Project is to make operation of experiments easier with better access to sample environments (Pulsed Magnet (PUMA), Cryostat, Fast Solid Sample Scanner (FSSS), Diffractometer, Liquid Injector), and possibilities to install new ancillary equipment included in the MPC-2 INTERIOR Upgrade. Reported are also examples of last recent EXPERIMENTAL SETUPS, continuing in the direction of simultaneous multi-detector-use.
Poster: TUP26
Paper: TUP26
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP26
About: Received: 05 Sep 2025 — Revised: 12 Sep 2025 — Accepted: 14 Sep 2025 — Issue date: 02 Apr 2026
Experimental station at MicroMAX
MicroMAX is the second macromolecular crystallography (MX) beamline at MAX IV designed primarily for time resolved studies of microcrystals using novel sample delivery methods grouped under Serial Synchrotron Crystallography (SSX) as well as conventional rotation data collection. Samples can be studied in the range from room temperature to 90 K. Time resolved studies are supported by a tuneable nanosecond laser. The experimental station has two area detectors (Eiger2X 9M CdTe, and Jungfrau 9M); an Arinax MD3-UP goniometer; an Irelec ISARA sample changer with a liquid nitrogen dewar capable of storing 29 Unipucks (464 samples); a beam conditioning unit; and a granite gantry for supporting additional equipment. The inhouse designed instrumentation includes the detector support for the two detectors, the sample table with six degrees of freedom, the gantry, as well as the beam conditioning unit and the mirror system and their support.
TUP28
MicroMAX beam conditioning unit
69
A new Beam Conditioning Unit (BCU) has been developed for the MicroMAX beamline at MaxIV to condition the beam between the KB mirrors and the sample. It includes two XBPMs, a set of slits, a rotating chopper, a fast shutter and a linear attenuator, all on piezo driven stages. MicroMAX has a close collaboration with the BioMAX beamline, to simplify future work the same fastening rail system, with the same distance from rail to beam was chosen. To protect the XBPMs from oxygen but still allow for some heat transfer through convection, the chamber is filled with a low-pressure helium environment.
Poster: TUP28
Paper: TUP28
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP28
About: Received: 08 Sep 2025 — Revised: 12 Sep 2025 — Accepted: 12 Sep 2025 — Issue date: 02 Apr 2026
FL28: A new diagnostic beamline for ultra-short XUV FEL pulses at FLASH 2
The FLASH2020+ project$*$, a major upgrade program for the high-repetition-rate XUV and soft X-ray free-electron laser FLASH at DESY, aims at significantly improving the FEL photon-beam properties for users. Besides external seeding at the full repetition rate of FLASH, a second focus is put on extremely short photon pulses in the lower fs range. Here, we will present the new diagnostic beamline concept for the FLASH2 branch to address the temporal characterization of the FEL photon pulses. The new FL28 beamline will be set up as a dedicated online diagnostic beamline. This is accomplished by an almost parasitic extraction of a small fraction of the FEL beam, while the main part of the beam is steered almost unaffected to the user experiments. The extraction and transport of the FEL radiation into the interaction chamber is realized by two Ni-coated mirrors under 16°, which cover a wavelength range from 2 nm to 90 nm, followed by a differential pumping stage and an ellipsoidal focusing mirror. Finally, the pulse length is derived from electron time-of-flight spectroscopy on noble gases in combination with an external infrared circularly-polarized streaking laser field$**$.
Poster: TUP30
Flexible instrument setups: concept and experience from the SCS Beamline at european XFEL
The spectroscopy and coherent scattering instrument (SCS) at the European XFEL was designed for a wide range of experimental techniques in the soft x-Ray regime. In order to conduct the experiments, the instruments have to host different kind of (experimental) chambers and detectors system(s). The changeover between the different configurations should be done as easy as possible but also with a reliable workaround. The poster will present different approaches and concepts in order to realize this. One the one hand the physical transport and installation will be shown. Examples are here the transport with air-pads and three fixation points for a suitable reproducibility of the different chambers. Experience from the operation and the needed infrastructure will be described as well. On the other hand, the electrical connections are important for control and taking data. The poster will show here the local box solution as well as the usage of field bus terminals and give also the outlook for a flexible programming of the PLC control.
TUP32
Hexi: The High-energy Electron Xtallography Instrument
72
The High-energy Electron Xtallography Instrument (HeXI), currently under construction at Diamond, is set to expand the range of samples suitable for structure determination via electron diffraction. Funded by the Wellcome Trust's “Electrifying Life Sciences” grant and Diamond Light Source, the HeXI project will utilize Mega-electron-volt (MeV) electrons to bridge the crystal size gap between electron and X-ray scattering. This will enable the determination of structures from crystals ranging between 300 nm and 3 μm. HeXI incorporates a tunable electron source, adjustable between 100 kV and 1 MeV, along with bespoke collimation and magnetic lenses, capable of achieving the precise optical properties necessary to interrogate nanometer-scale crystals within an in-vacuum sample environment. This first-of-its-kind instrument will combine the unique sensitivity of electrons to structural information with the advanced goniometry developed at Diamond for macromolecular X-ray crystallography to enhance overall data quality. In this poster, we will explore the design of this 7-meter-long electron beamline and its main challenges.
Poster: TUP32
Paper: TUP32
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP32
About: Received: 04 Sep 2025 — Revised: 13 Sep 2025 — Accepted: 14 Sep 2025 — Issue date: 02 Apr 2026
TUP33
High-precision alignment of an upgraded soft X-ray polarimeter at Diamond Light Source
75
Knowledge of X-ray beam polarisation on a synchrotron beamline is essential, not only for characterising the undulator performance, but also for precise analysis of dichroic and chiral experiments. The upgraded high-precision soft X-ray polarimeter at Diamond Light Source features multiple retarder adjusters to allow precise concentricity and angular alignment to the analyser. An offline alignment procedure has been developed, achieving 69 µm horizontal and 17 µm vertical concentricity alignment, as well as 4 µrad yaw and 9 µrad pitch alignment. Compared to the original version of the instrument, the vertical concentricity alignment improved by 14× and the pitch alignment improved by 18× $*$. The procedure uses a laser diode to mimic the X-ray beam and a hexapod to align the analyser. Concentricity alignment relies on monitoring the intensity as the laser beam is cropped by plane mirrors on the retarder and analyser stages. Angular alignment is achieved by measuring the retarder and analyser rotation vectors using an autocollimator. The improved alignment allows the polarimeter to meet the stringent requirements for complete polarisation measurement above 1 keV.
Poster: TUP33
Paper: TUP33
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP33
About: Received: 08 Sep 2025 — Revised: 13 Sep 2025 — Accepted: 13 Sep 2025 — Issue date: 02 Apr 2026
High resolution beam defining slits for Korea–4GSR beamlines
The beamlines of 4GSR use an undulator as the light source and consist of a DCM (Double Crystal Monochromator), beam focusing devices, and slit devices. The Beam Defining Slit, installed after the DCM, processes an X-ray beam of several tens of micrometers with sub-micron precision. This device minimizes parasitic scattering and maximizes X-ray beam intensity at the sample location. Materials resistant to the heat load from the synchrotron light source were chosen. The slit edges are designed with a knife-edge shape, and the surface roughness is polished to several hundred nanometers or less, optimizing fuzziness. The device achieves geometric stability and sub-micron precision for more accurate beam processing. The schematic structure includes four slit blades, four blade transport mechanisms, a vacuum chamber, and support structures. Additionally, the design includes a BPM function by receiving electrical signals from the slit blades. This presentation will describe the configuration and mechanical design of the Beam Defining Slit for the 4GSR beamlines, along with the detailed structure of the devices for beam processing.
Hybrid semitransparent beamstops for small-angle X-ray scattering instruments
We report a novel concept of hybrid semitransparent beamstops for small-angle X-ray scattering (SAXS) instruments, removing the need for a separate photodiode to monitor the transmitted X-ray intensity. A beamstop is used to block the unscattered primary X-ray beam after it passes through the sample, protecting the detector while enabling measurement of the scattered signal. The design combines a semitransparent aluminum core with a highly absorbing steel cover to suppress parasitic scattering from the beamstop itself. The aluminum thickness is tailored to match the desired X-ray energy range, allowing sufficient transmission for beam monitoring while maintaining beam attenuation. Thanks to its modular architecture, the beamstop can be easily adapted to different beamline configurations, X-ray energies, and flux conditions.
In-line Sample viewer for sample alignment and visualization in SAXS/WAXS experiments at the CoSAXS Beamline at MAXIV Laboratory.
The CoSAXS beamline at MAX IV Laboratory has incorporated an in-line sample viewer. This new feature allows users to visually monitor and optimize the sample position within the beam path directly, which is crucial for experiments requiring precise micrometric alignment. The in-line viewer is designed to support intricate experimental setups such as microfluidics, where precise control of fluid flow and sample positioning is essential. The viewer is particularly helpful for TR-XSS, where experiments involve triggering structural changes with a laser and then rapidly collecting X-ray scattering data. Precise alignment is needed to ensure accurate measurements. The primary goal of the in-line viewer is to enable users to achieve and maintain micrometric precision in sample positioning, which is often necessary for advanced experiments.
TUP39
Latest progress on two new ALS-U beamlines for diffraction-limited performance
79
The Advanced Light Source Upgrade (ALS-U) will increase soft X-ray coherent flux by 100×. We developed two new beamlines, engineered to minimize loss of brightness and utilize the advanced coherence of the light source. Each beamline uses a minimalist optical layout: a cryogenically-cooled silicon M1 mirror, a monochromator with variable-line-spacing gratings, and a final focusing M3 mirror. Optics are designed for Strehl ratio > 0.8 and sub-100 nrad vibration. A piezo-bimorph M3 mirror paired with a wavefront sensor allows for wavefront optimization. Fabrication is underway. New test data include at-wavelength efficiency measurements for blazed gratings, and motion performance of piezo-actuated pitch/roll flexure systems at cryogenic temperatures, granite air-bearing positioners, and monochromators.
Poster: TUP39
Paper: TUP39
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP39
About: Received: 04 Sep 2025 — Revised: 15 Sep 2025 — Accepted: 16 Sep 2025 — Issue date: 02 Apr 2026
Macromolecular crystallography at beamline P11
DESY’s MX beamline P11 has been operating since 2012 at PETRA III and offers versatile focusing options to match the beam size and desired dose with diverse samples and various kinds of experiments$*$. The important upgrade of P11 hardware is planned for the near future. We will exchange the diffractometer and the sample changer for a well-proven solution from Arinax, which is presented at EMBL and ESRF. The Arinax MD3up solution, in combination with a magnetic sample changer and a more spacious dewar that fits 37 unipacks, will allow us not only to decrease the data collection time but also improve the reliability. Serial synchrotron crystallography at P11 is enabled mainly with the CFEL tape-drive setup, also capable of time-resolved experiments by the mix-and-diffuse method$**$. Real-time autoprocessing of serial data with CrystFEL$***$ has been developed within a long-term proposal. At PETRA IV, we are aiming to form a uniform bio-village at the current location of DESY and EMBL beamlines (P11-P14). Together with EMBL and Hamburg University of Applied Sciences (HAW Hamburg), DESY is currently building up a new logistics chain for MX samples.
Poster: TUP40
TUP41
Mechanical design and implementation of a High Harmonic Generation source at the SXP instrument
83
The Time-Resolved X-Ray Photoelectron Spectroscopy (TR-XPES) experimental station at the Soft X-ray Port - SXP Scientific Instrument of the European XFEL has been developed to perform femtosecond time-resolved photoelectron spectroscopy experiments on solids. The SXP Scientific Instrument opens new scientific opportunities for fs TR-XPES, including core level photoelectron spectroscopy (XPS), photoelectron diffraction in forward scattering (XPD), and increased probing depth through higher electron kinetic energies. To further extend experimental capabilities, a laser-based High Harmonic Generation (HHG) source is under development. HHG pulses in the extreme ultraviolet (XUV) range up to 70 eV will be generated using a 1030 nm pump laser with 200 μJ pulse energy at a nominal 334 kHz repetition rate. This photon energy range will enable to perform measurements more surface sensitive and allow to study of shallow core levels with high fidelity and the measurement of valence band dispersion with high angular precision. This contribution describes the mechanical design, key technological developments, implementation, and current status of the HHG source at the SXP Instrument.
Poster: TUP41
Paper: TUP41
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP41
About: Received: 03 Sep 2025 — Revised: 14 Sep 2025 — Accepted: 15 Sep 2025 — Issue date: 02 Apr 2026
Fully motorized, UHV compatible mirror mount with 6 degrees of alignment freedom
The XRD (X-Ray Diffraction Chamber) is one of the endstations of the SCS instrument, specifically designed for experiments on solid targets. Its sample holder features six-degree-of-freedom motion, allowing for precise positioning and alignment of the sample. During THz experiments at the XRD endstation of the SCS instrument, a 2″ off-axis parabolic mirror must be precisely positioned in six degrees of freedom under UHV conditions (10⁻⁷ mbar). Each axis is equipped with encoder feedback and adjustable limit switches. Because of the focus length of 50.8 mm (2 ”) there is a very limited installation space. In operation, the mirror is translated and rotated into the X-ray beam path so that the THz and X-ray beams overlap exactly at the sample. After the measurement, the mirror has to be fully retracted from the beam path. The design challenge is to create a support system that is statically over-determined for rigidity. The system can be temporarily decoupled to form an under-determined mechanism for pre-alignment.
Poster: TUP42
Microfocus tender X-ray beamline utilizing dipole radiation at BESSY II
A new beamline has been established on a dipole magnet at BESSY II in PTB’s own laboratory. The microfocus of the beamline has a typical spot size of 20 µm x 20 µm within the range of 1.5 keV to 10 keV monochromatized dipole radiation. Particularly, the microfocus will make X-ray spectrometric measurements more efficient and accurate, especially for techniques such as micro-X-ray fluorescence spectroscopy and X-ray emission spectroscopy using a von Hamos spectrometer. The core of the beamline is the monochromator that combines two modules: a plane grating monochromator (PGM) equipped with a multilayer-coated blazed grating and a plane mirror for energies up to 3.5 keV, and a double crystal monochromator (DCM) with two Si (111) crystals for energies above 2.45 keV. All the other mirrors are coated with Pt. To suppress higher-order contributions above 4 keV, the toroid M1 has an additional coating stripe of carbon. M1 and cylindrical M2 generate an intermediate focus at the exit slit. The final microfocus is created by a Kirkpatrick-Baez optic with two plane-elliptical mirrors. Initial results will be presented regarding beamline performance as well as from the commissioning phase.
Multilayer based soft-x-ray polarimeter at SOLARIS National Synchrotron Radiation Centre
The main goal of the project is to design and manufacture a multilayer soft-x-ray polarimeter. It will give us the opportunity to compare theoretical polarization with actual polarization, which will make it possible to adjust the synchrotron beam to optimal parameters. The device will be inserted very precisely before the end station of the beam line and will work in ultra-high vacuum environment. The polarimeter will be small, universal and mobile. It will be possible to move it and connect it to lines that require it. Additionally, there will be a sample storage inside the device, which will enable to change polarizers and analyzers without breaking the vacuum, which will make beam analysis much easier. The polarimeter, analyzer and detector will change angles inside the device, which will enable research.
TUP45
Nano-tomo-ptychography 3D-imaging on Swing Beamline
86
In 2018, a new Nanoprobe system was installed and validated on the SWING beamline (Synchrotron SOLEIL) for 2D-nano-ptychography with an expected imaging resolution of 40 nm. The setup had been designed to be portable and capable of handling multiscale sample-sizes (from micrometer to hundreds of a micrometer). This system was then successively upgraded to allow for 2D-imaging resolutions of 20 nm, and 3D-nano-tomo-ptychography imaging with spatial resolutions of 50 nm. The end-station is composed of: a sample stage (5DOF), an optical stage comprised of a central stop and a Fresnel zone plate optical (3DOF), an order sorting aperture stage (3DOF). All positioning stages comprise piezo-driven actuators, of which synchronized control (with kinematic modelling) is done using the SOLEIL Delta Tau platform. In addition, fibber interferometry feedback was used for image reconstruction purposes. After the last improvements in 2023, imaging results show that the system can resolve 3D-images with a spatial resolution of 31 nm using a teeth sample (18h of acquisition). This contribution will present an overview of the mechanical design concepts and solutions adopted for the Nanoprobe project.
Paper: TUP45
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP45
About: Received: 04 Sep 2025 — Revised: 15 Sep 2025 — Accepted: 17 Sep 2025 — Issue date: 02 Apr 2026
TUP47
Optimizing SGM beamline performance: hexapod and spectroscopy enhancements
90
Recent developments on the Spherical Grating Monochromator (SGM) beamline at the Canadian Light Source (CLS) have significantly enhanced its capabilities, particularly through the integration of a vacuum-compatible Physik Instrumente hexapod (H-811.I2V) and the implementation of Bluesky data acquisition software. These upgrades have facilitated the transition from traditional X-ray Absorption Spectroscopy (XAS) measurements to advanced spectromicroscopy techniques. The hexapod allows for sub-micron scale sample manipulation, enabling high-resolution imaging with a 20 mm × 15 mm field of view. Additionally, the modelling of the Kirkpatrick-Baez (KB) mirror system for adaptive focusing has further optimized the beamline's performance providing a beam spot size of less than 10 µm². These developments have not only significantly improved the beamline's capabilities for environmental and catalytic material studies, but also increased the data quality for all routine spectroscopy measurements conducted on the beamline.
Poster: TUP47
Paper: TUP47
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP47
About: Received: 05 Sep 2025 — Revised: 15 Sep 2025 — Accepted: 16 Sep 2025 — Issue date: 02 Apr 2026
TUP48
Rapid beamline diagnostics for upcoming BESSY II+ SoTeXS beamline
93
As part of the BESSY II+ * upgrade, the new SoTeXS (Soft-to-Tender X-ray Spectroscopy) beamline will enable high-precision, high-throughput studies of battery materials in the 0.5–5 keV energy range. At the endstation, battery cells with varying material combinations will undergo charging and discharging phases while being exposed to the beam. To ensure that, variations in the measurements are attributable to changes within the cells rather than fluctuations in beam properties, a rapid diagnostics procedure will be implemented. This procedure will monitor beam performance in between the battery measurements. This includes measurement of key parameters such as photon flux, energy resolution, and beam focus. The system combines a retractable ionization chamber for energy resolution measurements and a camera-based setup using OpenCV and ChArUco markers for determining beam spot size and position**. These tools allow beam performance monitoring between sample loading cycles and represent an advance over commissioning-only diagnostics on current BESSY II beamlines. This paper presents the technical requirements of the SoTeXS beamline and a selection of potential diagnostic tools.
Poster: TUP48
Paper: TUP48
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP48
About: Received: 03 Sep 2025 — Revised: 15 Sep 2025 — Accepted: 15 Sep 2025 — Issue date: 02 Apr 2026
Reconfiguration of the ASTRA beamline and its adaptation for Raman spectroscopy measurements
We present the reconfiguration of the ASTRA beamline (Absorption Spectroscopy beamline for Tender energy Range and Above) and its adaptation for combined X-ray absorption and Raman spectroscopy measurements. A new modular support system was designed and constructed to allow rapid and flexible reconfiguration of the end station, facilitating a broad range of experimental setups. Each vacuum chamber was equipped with an individual precision alignment system, while a central support rail mounted on the optical table ensured high positional accuracy relative to the synchrotron beam. A key part of the beamline modification was the design and construction of a new vacuum chamber with a port, allowing the Raman microscope head to reduce the distance to the sample. This solution enabled simultaneous measurement of the sample using both X-ray absorption spectroscopy and Raman spectroscopy.
TUP50
Remote cryo valve adjuster – a new device to improve safety and reduce cost
97
During the COVID-19 pandemic, non-essential businesses closed or reduced output, prices for products rose, and availability of products needed for research decreased significantly. Many cryogenic gas producers either closed or significantly reduced production, causing the price of cryogenic gases such as liquid helium (LHe) to rise. Concurrently, much effort was focused on remote and multi-sample processing capabilities at NSLS-II, especially when non-essential staff members were not allowed on site and forced to work from home. Efforts therefore increased to develop equipment to facilitate remote and efficient research operations with minimal on-site presence. A prototype remote cryogenic transfer line valve adjuster was initially developed at this time which successfully cut LHe consumption to less than half in one week-long series of experiments, but it needed improvement. This paper describes the engineering efforts to develop, incrementally improve, and produce working remote cryogenic transfer line valve adjusters that could attach to existing standard cryogenic transfer lines.
Paper: TUP50
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP50
About: Received: 05 Aug 2025 — Revised: 16 Sep 2025 — Accepted: 16 Sep 2025 — Issue date: 02 Apr 2026
Sample environment @ PETRA III for in-situ & operando x-ray experiments
The Sample Environment Team was established to bundle information, knowledge and expertise within Petra III, with the aim of speeding up the engineering process, reducing duplicate developments und promoting standardization wherever possible. Since the start of Petra III, the SaEn-Team has developed various devices. These devices are either specialised for a certain beamline or developed with feedback from several beamlines for our own pool of equipment that is available for user beamtimes. This poster will present a selection of the Sample Environment Team's completed, ongoing and future projects at Petra III, categorized by topic. These topics are: Cryogenic; High Temperature; High Pressure; Mechanical Devices; Automation; and Vacuum or Reactive Chambers. Each project will be briefly presented with images and specifications. Projects to be presented include an MBE-Insitu chamber, a multipurpose sample heater, diamond anvil cells and the automation of sample changes in closed chambers with focus on cryogenic chambers.
Poster: TUP51
TUP52
SPring-8 BL12B2 Attenuator Design
100
The light source of the BL12B2 beamline is one of the bending magnets in SPring-8; with this beamline, scientists can conduct experiments in X-ray absorption spectroscopy, high-resolution X-ray scattering, protein crystallography, and micro-beam scattering. The SPring-8-II will undergo an upgrade in the next few years. The attenuator, designed for the future upgrade of BL12B2, features nine filters and is cooled by the chamber wall. Each filter carrier can absorb 100 W, and the carrier's maximum temperature is lower than 75 °C when the wall temperature is 25 °C. The attenuator also provides the pumping station function; it has a 6" port for the ion and turbo pump. The attenuator filter is driven by a pneumatic actuator, which positions the filter on the beam and in the cooling position. This attenuator was already installed in the SPring-8 BL12B2 beamline in April 2025.
Paper: TUP52
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP52
About: Received: 05 Sep 2025 — Revised: 17 Sep 2025 — Accepted: 17 Sep 2025 — Issue date: 02 Apr 2026
TUP53
Studies for a novel generation of the beam profile measurement (beam wire scanner) for the Large Hadron Collider (LHC)
103
Aiming for the improvement of the reliability and maintainability of the LHC linear wire scanners, a completely new concept is currently under development. The innovative design will eliminate the use of bellows, feature a more precise and optimized wire positioning system, and incorporate a significantly more robust and resilient mechanical structure. Four next-generation instruments are scheduled for installation in the LHC during Long Shutdown 3, enabling both horizontal and vertical beam profiling for beam 1 and beam 2 with improved accuracy and stability. This paper presents the conceptual study, detailed mechanical design, integration strategy, and the initial experimental tests of the newly developed magnetically driven linear wire scanner.
Poster: TUP53
Paper: TUP53
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP53
About: Received: 05 Sep 2025 — Revised: 18 Sep 2025 — Accepted: 18 Sep 2025 — Issue date: 02 Apr 2026
Technical developments of the microfocus endstation at Beamline P03/ PETRAIII
P03 is the MiNaXS Beamline at PETRA III covering a variety of technics, e.g. Gi/T-S/W-AXS, XRF and XRR$*$. An adaptive flight-tube enables changes of the SAXS detector distance (from 1.5 - 9.7 m). Another key feature of P03 is the operation of a customized L-shaped LAMBDA 9M detector system (X-Spectrum). Different sample environments can be implemented at the P03 beamline, e.g. a RF sputter equipment (HASE)$**$, printing setup$***$, a flow cell and a myoSAXS (muscle research) setup. In addition, we have recently employed an X-ray reflector setup for GIUSAXS/GTUSAXS at air/liquid interfaces. At the microfocus endstation EH1, a flexible heavy-load 5-axes goniometer is operated, which can be optionally equipped with a linear translation stage and/or a hexapod for precise alignment. We implemented a frontend-compatible system with a fast pneumatically-actuated beam shutter and an Ionisation chamber. In the near future, P03 is planning to develop a low energy ion beam irradiation chamber. Recently, we commissioned an additional CRL in close vicinity to the sample position. Furthermore, we plan to parallelize the beam after monochromator by a new transfocator.
Poster: TUP54
Test beamline construction and device performance evaluation at PLS-II
A test beamline has been built at the Pohang Light Source-II (PLS-II) to check the performance of new diagnostic and optical devices. The entire beamline is installed inside an experimental hutch, which includes basic support systems like a portable crane, cooling lines, and air lines for easier setup and testing. Currently, the beamline includes a 4-way slit, screen monitor, wire scanner, and a double crystal monochromator (DCM). New diagnostic devices for synchrotron radiation will also be developed and tested here. Optical devices such as the DCM and mirror manipulator are being upgraded, and we are focusing on improving mechanical stability and reducing beam vibrations. The goal is to apply these improvements step-by-step to the existing beamlines at PLS-II.
TUP56
The extreme conditions catalytic cell for BL01 at ALBA
107
A new catalytic cell has been developed for the Infrared Spectroscopy and Microscopy (MIRAS-BL01) beamline at the ALBA synchrotron. The aim of this instrument is to study catalytic reactions, crucial for advancing sustainable chemistry by enabling energy-efficient processes and minimizing by-products. Infrared (IR) spectroscopy offers key molecular insights, helping identify active species, understand mechanisms and link structure to activity. It also monitors catalysts in real time, revealing structural changes that affect performance. The reactor is designed to operate in transmission mode from vacuum conditions to pressures up to 20 bar of different mixtures of gases and within a wide temperature range, covering from cryogenic temperatures up to a maximum of 500°C, while allowing the sample to move vertically few millimetres in order to alternate between exposing it and the background. Currently in production, the design's key aspects are presented, covering the sample position mechanics, the various FEA calculations performed as well as the necessary auxiliary systems, such as cooling mechanisms and the pressurized gas circuit.
Poster: TUP56
Paper: TUP56
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP56
About: Received: 28 Aug 2025 — Revised: 14 Sep 2025 — Accepted: 17 Sep 2025 — Issue date: 02 Apr 2026
TUP57
The millisecond x-ray fast shutter for BL31 at ALBA
110
A new high-speed beam shutter has been developed for the fast x-ray tomography & radioscopy (FAXTOR-BL31) beamline at the ALBA synchrotron, which aims at preventing high dose rate at the sample and provides a synchronization to the acquisition protocol. The non-periodic fast shutter is based on the combination of two tungsten blades each one driven by linear voice coil actuators. The blades synchronization achieves opening and closing times of 10 ms for a monochromatic beam size of H 40 mm x V 12 mm aperture. The design provides flexibility to adjust the aperture dimensions and speed to be able to control the radiation dosage upon the sample, triggered by the image acquisition rate of the detector or timing device. The essential aspects of the design are presented, along with an analysis of the commissioning tests that demonstrate the required performance.
Poster: TUP57
Paper: TUP57
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP57
About: Received: 28 Aug 2025 — Revised: 12 Sep 2025 — Accepted: 12 Sep 2025 — Issue date: 02 Apr 2026
TUP58
The new ALBA diffractometer for microfocus beam macromolecular crystallography experiments at XAIRA beamline
113
XAIRA, the new microfocus MX beamline at ALBA aims to deliver optimal diffraction images by enclosing the entire end-station in He atmosphere, including the diffractometer and the detector, while keeping the compatibility with standard cryo-crystallography tools and robot. The sub-100 nm SoC diffractometer, based on a unique helium bearing goniometer also compatible with air, has been designed to deliver high quality data from micron sized crystals from fast oscillation and fixed-target MX experiments while allowing a tight sample to detector distance of 70mm. The diffractometer also includes a double on-axis visualization system for sample imaging at sub-micron resolutions, a quick retractile collimator and beamstop assembly, a front- and backlight illumination system and a fast in/out YAG:Ce screen system for beam positioning. Here, the overall system design and performance results are presented.
Poster: TUP58
Paper: TUP58
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP58
About: Received: 25 Aug 2025 — Revised: 15 Sep 2025 — Accepted: 16 Sep 2025 — Issue date: 02 Apr 2026
TUP59
The new microfocus station for the NOTOS beamline at the ALBA synchrotron
116
The NOTOS beamline at ALBA combines X-ray Absorption Spectroscopy (XAS) and X-ray Diffraction (XRD) experiments, operating in the 4.5-30 keV range. Since 2022, it has offered two end stations (ES): one for metrology and XAS, and another combining XAS and XRD. To overcome the current 100×100 µm² spot size limitation, we present a third microfocus ES (µFo-ES), planned for commissioning by the end of 2025. It will provide spot sizes below 10×10 µm² with a flux >7.3·10¹³ ph/s/mm², enabling XAS in fluorescence and transmission. It uses the existing optics plus a pair of Kirkpatrick–Baez (KB) mirrors working under high vacuum. The KB positioning system is based on an in-housed developed design and the mirrors will be elliptically bent using ALBA mirror benders with sub-nanometric resolution. High-precision slits placed upstream the KB will ensure beam size, collimation, and diagnostics. The µFo-ES will integrate a compact sample environment including a ionization chamber, on-axis camera, and a fluorescence detector for variable incident angles. To ensure compatibility with downstream ES and prevent photon flux loss, the µFo-ES has been designed to be fully retractable from the beam path.
Poster: TUP59
Paper: TUP59
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP59
About: Received: 01 Sep 2025 — Revised: 14 Sep 2025 — Accepted: 14 Sep 2025 — Issue date: 02 Apr 2026
TUP60
Thermal modelling, design and evaluation of a cryogenic cooling system for a beamline endstation
119
The accurate estimation of thermal contact conductance (TCC) is a fundamental need towards the optimal design of a cryogenic cooling system for the new flagship beamline CSXID at Diamond Light Source, which utilizes mechanically pressed copper components to form the heat conduction path. To aid development, a study of thermally conducting joints at cryogenic temperatures has been performed combining Simulink and ANSYS Mechanical. To verify and validate the simulation results, an experimental setup will be made to carry out experiments to determine performance of the system, taking into consideration parameters including surface roughness, surface finish, temperature, & clamping force, which all greatly influence TCC.
Poster: TUP60
Paper: TUP60
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP60
About: Received: 04 Sep 2025 — Revised: 15 Sep 2025 — Accepted: 15 Sep 2025 — Issue date: 02 Apr 2026
Ultra-high-resolution monochromators for XFEL applications at LCLS-II-HE: a 4f Optical approach with channel-cut crystals
Traditional synchrotron monochromators cannot handle the extreme thermal loads and stability demands of XFELs, especially for seeded X-rays. To overcome this, LCLS-II-HE has developed a multi-stage monochromator system integrating two double channel-cut (DCCMs) and two consecutive channel-cut monochromators (CCMs) in a 4f optical configuration. This ensures precise beam collimation, spectral filtering, and wavefront preservation while achieving ultra-high energy resolution. Asymmetrically cut silicon crystals distribute thermal loads over a larger beam footprint, reducing distortions and enhancing stability—critical for RIXS experiments probing low-energy excitations in quantum materials. The 4f alignment minimizes spectral drift and enhances reproducibility, ensuring the sensitivity needed for resolving subtle electronic and phononic interactions. This presentation details the design, implementation, and impact of this system, providing a scalable solution for next-generation RIXS studies at LCLS.
Poster: TUP61
Upgrade of crystal positioners for the ESRF Double Crystal Monochromator
The ESRF Double Crystal Monochromator (ESRF-DCM) was designed and developed in-house to enable spectroscopy beamlines to fully exploit the ESRF-EBS upgrade. While such key components always demand high beam positioning accuracy and stability, the EBS source requires even more stringent performance, such as a fast and continuous energy scanning crucial for modern spectroscopy. Meeting the challenging ESRF-DCM specifications involved high-precision mechanical design coupled with a mechatronic system for active correction of the crystal parallelism based on an online metrology. As part of ongoing optimization efforts, we recently focused on upgrading the actuators for crystal positioning to further enhance performance. These new actuators were integrated onto an ESRF-DCM during Spring 2025. This presentation will provide a brief overview of the DCM design principles, then focus on the design, integration, and commissioning results of these upgraded actuators. Finally, key performance characterizations of the DCM using X-rays, demonstrating the impact of the upgrade, will be presented.
Poster: TUP62
Versatile x-ray reflector extension setup for grazing-incidence experiments at SAXS Facilities for liquid surface study at Beamline P03/PETRA III
Existing beamlines for in situ GISAXS on liquids are either limited in angular range or incompatible with the large sample-detector distance required for submicron resolution. We present a low-cost, easily assembled beam-tilting extension for synchrotron-based ultra-small-angle X-ray scattering (USAXS) facilities, enabling grazing-incidence (GI-) and transmitted scattering (GIUSAXS, GTUSAXS) studies on liquid surfaces. The setup is compatible with standard USAXS beamlines and requires only ~0.5 m of space at the sample stage. It allows X-ray beam incidence angles of up to ~0.6° at the liquid surface, equal to twice the angle of incidence on a reflector and below its critical angle of reflector materials, and provides access to a q-range of approximately 0.003–0.5 nm⁻¹. The system was tested at P03 beamline (DESY) using polystyrene nanoparticles, self-assembled at the air/water interface. The proposed scheme enables selective depth profiling and expands the research capabilities of existing SAXS synchrotron facilities for in situ studying submicron nanostructured objects at liquid surfaces under GI-geometry, combined also with GIWAXS and TXRF techniques.
Poster: TUP63
TUP64
XBPF design and prototyping
122
The CERN Beam Instrumentation Group has developed a new scintillating fibre beam profile monitor for the secondary beam lines of the CERN North Experimental Area. This innovative monitor employs plastic scintillating fibres, read out with silicon photomultipliers, to provide a cost-effective and efficient solution for beam profile measurement. The design goals for the new monitor included ease and low cost of production, achieving a particle detection efficiency above 95%, compatibility with beam intensities ranging from 1 to 10^8 particles per second, a spatial resolution of 1 mm, a low material budget, coverage of an active area of 10 cm x 10 cm and 20 cm x 20 cm, operability in a vacuum environment, and equipped with in/out motorisation for retracting the equipment from the beamline. A prototype was tested at the CERN East and North Area facilities, demonstrating excellent performance and validating the design for mass production.
Poster: TUP64
Paper: TUP64
DOI: reference for this paper: 10.18429/JACoW-MEDSI2025-TUP64
About: Received: 05 Sep 2025 — Revised: 14 Sep 2025 — Accepted: 14 Sep 2025 — Issue date: 02 Apr 2026
Beamline engineering progress and key equipment development at Hefei Advanced Light Facility (HALF)
The Hefei Advanced Light Facility (HALF) is a diffraction-limited storage ring light source currently under construction. Its storage ring will operate at 2.2 GeV with a circumference of 479.86 m and a natural emittance of 86.3 pm·rad. Engineering design for the first phase, comprising 10 beamlines covering the vacuum ultraviolet (VUV) to medium-energy X-ray range, has been completed. Among these beamlines, eight utilize grating monochromators, one employs a double-crystal monochromator (DCM), and one incorporates both grating and crystal monochromators. To address the unique advantages and challenges of diffraction-limited light sources—characterized by high coherence, high brightness, and high resolution—we have undertaken a series of key technology developments in beamline engineering. This paper presents the latest progress on beamline construction and the development of high-resolving-power plane grating monochromators (PGMs), DCMs, and mirror systems.
FEL-I beamline at SHINE
The Shanghai High Repetition Rate XFEL and Extreme Light Facility (SHINE) encompasses a high repetition rate XFEL and a 100 PW laser facility. The facility is designed to operate at a repetition rate of 1 MHz, with an energy range from 0.4 keV to 15 keV. SHINE features two primary beamlines: FEL-I and FEL-II. The FEL-II beamline covers the energy range from 0.4 to 3 keV, while the FEL-I beamline operates within the range of 3 to 15 keV. Each beamline is equipped with three endstations to facilitate a variety of experiments. At FEL-II, the endstations include the SSS, SES, and AMO endstations. Meanwhile, FEL-I comprises the HSS, CDS, and SEL endstations. This paper will present the optical design and the current status of the FEL-I beamline, including details on the optics and diagnostics.
Poster: TUP66
Design of high power load front ends for two upcoming beamlines at CHESS
Front end components must endure the harshest operating conditions of all the elements in a synchrotron beamline. At the same time, reliability is a key aspect of their design, with no tolerance for downtime due to the typically very limited access. The unique challenges presented by the front ends of the upcoming Sector 5 and 6 beamlines at CHESS are presented here together with the solutions adopted. The beamlines feature each two undulator sources. In one beamline, the undulators are installed in series for a power load of 12.4 kW over a 6x9 mm2 area, with a peak power density of 2270 W/mm2. In the other beamline, the undulators are canted to serve two independent branches, with a total radiated power of 14 kW. In addition to these high power loads, further challenges in the design of these front ends included severe space limitations for installation, due to the presence of existing infrastructure in the narrow underground accelerator tunnel; and intense ambient radiation from the 6 GeV storage ring during operation, especially in the beam plane, which affected the cooling and wiring routes as well as local shielding.
Poster: TUP67
The High Magnetic Field beamline at CHESS: endstation challenges, solutions and implementation
The High Magnetic Field (ID5A) beamline currently under construction at CHESS will enable the study of samples with hard X-rays under an extreme DC magnetic field up to 20T. The sample is inserted into an XYZ stage embedded at the center of a superconducting magnet, which can rotate around the vertical axis. Magnet rotation is achieved from the air side through a vacuum-tight 1.1 m diameter rotary seal. X-rays downstream from the sample are collected by an in-vacuum area detector mounted on a θRZ stage, which allows synchronized coaxial motion with the magnet within a very tight cylinder of confusion (20 µm radius). A large, curved gate valve separates the large vacuum vessel into two independent chambers, allowing maintenance operations in the detector space while keeping the magnet under cryogenic conditions. Furthermore, the whole endstation (around 24 mt weight) can be moved by +/- 25 mm in the vertical plane perpendicular to the beam, in order to adjust for changes in the beam position. Due to the high field, magnetic permeability must be as low as possible everywhere, ruling out the use of carbon steel anywhere in any significant amount e.g. for rails.
Poster: TUP68
Status of SLS 2.0 front ends
As part of the SLS 2.0 upgrade program, front-end systems have been extensively redesigned, refurbished, or constructed entirely anew to accommodate increased heat load, higher power density, and more compact device requirements$*$. Of the 18 front ends in scope, 12 have been installed and connected to the storage ring, most achieving first light at 400 mA and enabling initial user preparation; the remaining six are scheduled for installation in 2026 (Phase 2). Commissioning demonstrated flawless front-end performance, with beam delivery to the beamlines requiring minimal intervention. While design, procurement, manufacturing, and assembly adhered to schedule, ancillary systems such as cabling, vacuum, cooling, alignment, and PLC-based beamline control posed greater scheduling challenges due to complex inter-group coordination and shifting project priorities. The first-light results confirmed the efficacy of a fixed-mask plus movable-slit configuration, with newly developed slits reliably withstanding the increased thermal load.
Poster: TUP69
FemtoMAX beamline instrumentation and femtosecond pump-probe time-resolved experiments at the MAX IV Laboratory
FemtoMAX is a multi-purpose, short-pulse X-ray beamline at MAX IV, uniquely located at the short pulse facility downstream of the LINAC, rather than the 3 GeV storage ring. Operational since 2021, it enables time-resolved X-ray diffraction/scattering experiments in the femtosecond to picosecond range using <100 fs X-ray photon pulses$*$ that make it possible to follow the ultrafast dynamics in solid materials and biological molecules by investigating the structure of transient states along the optical response. FemtoMAX combines the temporal resolution of an FEL with the operational stability of a storage ring. The beamline features versatile optics including monochromators and focusing systems, and multiple 2D detectors in air and vacuum endstations providing a flexible sample environment. It is equipped with an ultrafast laser system and terahertz pump capabilities for pump–probe experiments. Controlled via the Sardana framework, the beamline supports custom scans and real-time data analysis. We present the beamline instrumentation, recent applications highlighting FemtoMAX’s value$**$,$***$, and opportunities of the experiments at the FemtoMAX beamline at the MAX IV Laboratory.
Poster: TUP70
Parallel kinematic mirror systems - Compensation of parasitic motions in long photon beamlines
The horizontal offset and distribution mirror chambers (CHOMs) in the photon beam lines of the European XFEL are based on a parallel kinematic system. While these systems consist of simple and reliable mechanical components and provide very good reproducibility for mirror positioning, there always is crosstalk between all motion axes. In the long (up to 600 m) beamlines of the European XFEL, the effect of the parasitic pitch motion is very dominant. We developed a strategy to translate the physical axes of the parallel kinematic system into virtual axes of the mirror coordinate system, and thus compensate for the parasitic motions. Application of the strategy via the XFEL software Karabo with a user interface now allows for a much more intuitive mirror alignment.
Poster: TUP71