TY  - CONF
AU  - Carver, L.R.
AU  - Alekou, A.
AU  - Antoniou, F.
AU  - Appleby, R.B.
AU  - Bartosik, H.
AU  - Bohl, T.
AU  - Burt, G.
AU  - Calaga, R.
AU  - Carlà, M.
AU  - Levens, T.E.
AU  - Mitchell, J.A.
AU  - Papotti, G.
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - First Machine Developments Result with HL-LHC Crab Cavities in the SPS
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Crab cavities are a critical component within the High Luminosity upgrade project for the Large Hadron Collider (HL-LHC). It is foreseen to use crab cavities in order to compensate the geometric luminosity reduction factor (reduction of the luminous region at the Interaction Point [IP]) due to the beam crossing angle (required for minimizing the impact of the long range beam-beam effects on the single particle beam dynamics) and increase the number of collisions per bunch crossing. In 2018 the first beam tests of crab cavities with protons were performed in the Super Proton Synchrotron (SPS) at CERN. Two vertical superconducting cavities of the Double Quarter Wave (DQW) type were fabricated and installed in the SPS to verify some key components of the cavity design and operation. This paper will present some of the first results relating to the proton beam dynamics in the presence of crab cavities.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 338
EP  - 341
KW  - cavity
KW  - proton
KW  - closed-orbit
KW  - luminosity
KW  - diagnostics
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPGW094
UR  - http://jacow.org/ipac2019/papers/mopgw094.pdf
ER  - 

TY  - CONF
AU  - Hoummi, L.
AU  - Loulergue, A.
AU  - Nagaoka, R.
AU  - Resta-López, J.
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Beam Dynamics in MBA Lattices with Different Chromaticity Correction Schemes
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Ultra-low emittance lattices are being studied for the future upgrade of the 2.75 GeV SOLEIL storage ring. The candidate baseline lattice was inspired by the ESRF-EBS-type Multi-Bend-Achromat (MBA) lattice, introducing a (-I) transformation to compensate the nonlinear impact of sextupoles thanks to the lattice symmetry and tight control of the betatron phase advance between sextupoles. Whilst the final performance is still being optimized, other types of lattices are being considered for SOLEIL: This includes the so-called High-Order Achromat (HOA) lattice. Though the (-I) scheme provides a large on-momentum transverse dynamic aperture in 4D, its off-momentum performance is rather limited. 6D studies reveal intrinsic off-momentum transverse oscillations which are likely to result from a nonlinear increase in path length. This contribution presents the effects from the inhomogeneous sextupole distribution in the (-I) scheme and compares them with the HOA lattice.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 346
EP  - 349
KW  - lattice
KW  - sextupole
KW  - emittance
KW  - betatron
KW  - storage-ring
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPGW096
UR  - http://jacow.org/ipac2019/papers/mopgw096.pdf
ER  - 

TY  - CONF
AU  - Dalena, B.
AU  - Boutin, D.
AU  - Chancé, A.
AU  - Cruz Alaniz, E.
AU  - Schulte, D.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Field Quality for the Hadron Option of Future Circular Collider
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The updated field quality for the baseline design option of the Nb₃Sn dipoles for Future Circular Collider (FCC-hh) is discussed. The impact on the expected dynamic aperture is shown at injection and collision energy and the consequent non-linear correction schemes together with their integration in the optics are defined.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 4397
EP  - 4400
KW  - injection
KW  - dipole
KW  - octupole
KW  - collider
KW  - target
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPMP005
UR  - http://jacow.org/ipac2019/papers/mopmp005.pdf
ER  - 

TY  - CONF
AU  - Kyle, B.S.
AU  - Appleby, R.B.
AU  - Brandin, M.
AU  - Mansten, E.
AU  - Pacey, T.H.
AU  - Thorin, S.
AU  - Williams, P.H.
AU  - Wolfenden, J.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Simulations and Measurements of Coherent Synchrotron Radiation at the MAX-IV Short Pulse Facility
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The Coherent Synchrotron Radiation (CSR) interaction is a source of unwanted correlated energy spread in short-bunch Free-Electron Lasers (FEL), diluting the desired FEL spectrum and reducing the total brightness of the light source. Many accelerator codes make use of 1-dimensional approximations in the calculation of the CSR-wake, which breaks down for bunch dimensions typical within bunch compressor dipoles in FELs. General Particle Tracer simulations of the CSR interaction make use of the 3-dimensional bunch distribution, making it advantageous in modelling the short-bunch, high aspect ratio regimes typical of modern 4th-generation light sources. Measurements of THz CSR emitted from the final bunch compressor dipole of the SP02 beamline at the MAX-IV Short Pulse Facility (SPF) were used, alongside start-to-end GPT and Elegant simulations, to characterize coherent radiation emission across a broad range of bunch lengths.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 712
EP  - 715
KW  - radiation
KW  - detector
KW  - simulation
KW  - electron
KW  - dipole
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPRB061
UR  - http://jacow.org/ipac2019/papers/moprb061.pdf
ER  - 

TY  - CONF
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Enhancing Experimental Prospects With Low Energy Antiprotons
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The Extra Low Energy Antiproton ring (ELENA) is a critical upgrade to the Antiproton Decelerator (AD) at CERN and saw the first beam in 2018. ELENA will significantly enhance the achievable quality of low energy antiproton beams and enable new experiments. To fully exploit the potential of this new facility, advances are required in numerical tools that can adequately model beam transport, life time and interaction, beam diagnostics tools and detectors to fully characterize the beam’s properties, as well as in novel experiments that take advantage of the enhanced beam quality that ELENA can provide. These research areas are in the heart of the pan-European research and training network AVA (Accelerators Validating Antimatter physics) which started in 2017. This contribution presents research results within AVA on the performance of ultra-thin diamond membranes, electron cooling and beam life time studies of low energy ion and antiproton beams, as well as efficient integration and performance optimization of cryogenic detectors in ELENA and associated trap experiments. These results are used to describe the optimum layout of a state-of-the-art low energy antiproton facility and associated experiments.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 727
EP  - 730
KW  - proton
KW  - antiproton
KW  - detector
KW  - experiment
KW  - cryogenics
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPRB065
UR  - http://jacow.org/ipac2019/papers/moprb065.pdf
ER  - 

TY  - CONF
AU  - Valizadeh, R.
AU  - Colligon, J.S.
AU  - Dan, Y.
AU  - Dhanak, V.R.
AU  - Hannah, A.N.
AU  - Malyshev, O.B.
AU  - Mutch, J.
AU  - Sian, B.S.
AU  - Sykes, N.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - MULTIPACTOR SUPPRESSION BY LASER ABLATION SURFACE ENGINEERING FOR SPACE APPLICATIONS
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Developing a surface with low Secondary Electron Yield (SEY) is one of the main ways of mitigating electron cloud and beam-induced electron multipacting in high-energy charged particle accelerators and space-borne RF equipment for communication purposes. In this study we report on the secondary electron yield (SEY) measured from silver coated aluminium alloy as-received and after laser ablation surface engineering (LASE). Analysis shows the SEY can be reduced by 43% using LASE. EDX and SEM analysis shows it is possible to reduce the SEY whilst maintaining the original surface composition.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 1365
EP  - 1368
KW  - electron
KW  - laser
KW  - multipactoring
KW  - GUI
KW  - controls
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-TUPMP051
UR  - http://jacow.org/ipac2019/papers/tupmp051.pdf
ER  - 

TY  - CONF
AU  - Kaabi, W.
AU  - Angal-Kalinin, D.
AU  - Bogacz, S.A.
AU  - Bousson, S.
AU  - Brüning, O.S.
AU  - Calaga, R.
AU  - Chaikovska, I.
AU  - Dassa, L.
AU  - Gerigk, F.
AU  - Hounsell, B.
AU  - Hutton, A.
AU  - Jensen, E.
AU  - Klein, M.
AU  - Levichev, E.B.
AU  - Longuevergne, D.
AU  - Marhauser, F.
AU  - McKenzie, J.W.
AU  - Militsyn, B.L.
AU  - Olivier, G.
AU  - Olry, G.
AU  - Pupkov, Yu.A.
AU  - Rimmer, R.A.
AU  - Stocchi, A.
AU  - Tennant, C.
AU  - Thonet, P.A.
AU  - Vallerand, C.
AU  - Welsch, C.P.
AU  - Williams, P.H.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - PERLE: A High Power Energy Recovery Facility
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - PERLE is a proposed high power Energy Recovery Linac, designed on multi-turn configuration, based on SRF technology, to be hosted at Orsay-France in a col-laborative effort between local laboratories: LAL and IPNO, together with an international collaboration involv-ing today: CERN, JLAB, STFC ASTeC Daresbury, Liverpool University and BINP Novosibirsk. PERLE will be a unique leading edge facility designed to push advances in accelerator technology, to provide intense and highly flexible test beams for component development. In its final configuration, PERLE provides a 500 MeV elec-tron beam using high current (20 mA) acceleration during three passes through 801.6 MHz cavities. This presenta-tion outlines the technological choices, the lattice design and the main component descriptions.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 1396
EP  - 1399
KW  - cavity
KW  - linac
KW  - cryomodule
KW  - injection
KW  - gun
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-TUPGW008
UR  - http://jacow.org/ipac2019/papers/tupgw008.pdf
ER  - 

TY  - CONF
AU  - Hounsell, B.
AU  - Kaabi, W.
AU  - Klein, M.
AU  - Militsyn, B.L.
AU  - Noakes, T.C.Q.
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Re-optimisation of the ALICE Gun Upgrade Design for the 500-pC Bunch Charge Requirements of PERLE
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The injector for PERLE, a planned ERL test facility, must be capable of delivering 500 pC bunches at a repetition rate of 40.1 MHz to provide a beam with 20 mA average current with a projected rms emittance of less than 6 mm mrad. This must be achieved at two different operational voltages 350 kV and 220 kV for unpolarised and polarised operation respectively. The PERLE injector will be based on an upgrade of a DC photocathode electron gun operated previously at ALICE ERL at Daresbury. The upgrade will add a load lock system for photocathode interchange. This paper presents the results of a re-optimisation of the electrode system as ALICE operated with a bunch charge of around 80 pC while PERLE needs a bunch charge of 500 pC. This re-optimisation was done using the many-objective genetic algorithm NSGAIII to minimise both the slice emittance and transverse beam size for both required operational voltages.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2071
EP  - 2074
KW  - cathode
KW  - gun
KW  - electron
KW  - operation
KW  - laser
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-TUPTS066
UR  - http://jacow.org/ipac2019/papers/tupts066.pdf
ER  - 

TY  - CONF
AU  - Nghiem, P.A.P.
AU  - Alesini, D.
AU  - Aschikhin, A.
AU  - Audet, T.
AU  - Aßmann, R.W.
AU  - Beck, A.
AU  - Chancé, A.
AU  - Chen, M.
AU  - Chiadroni, E.
AU  - Cianchi, A.
AU  - Clarke, J.A.
AU  - Couprie, M.-E.
AU  - Croia, M.
AU  - Cros, B.
AU  - Dattoli, G.
AU  - Del Dotto, A.
AU  - Delerue, N.
AU  - Dorda, U.
AU  - Ferran Pousa, A.
AU  - Ferrario, M.
AU  - Fonseca, R.A.
AU  - Ghaith, A.
AU  - Giribono, A.
AU  - Gizzi, L.A.
AU  - Helm, A.
AU  - Hidding, B.
AU  - Hooker, S.M.
AU  - Ibison, M.G.
AU  - Jaroszynski, D.A.
AU  - Kruchinin, K.O.
AU  - Labate, L.
AU  - Lee, P.
AU  - Li, F.Y.
AU  - Li, X.
AU  - Libov, V.
AU  - Marchetti, B.
AU  - Martinez de la Ossa, A.
AU  - Marx, D.
AU  - Massimo, F.
AU  - Mathieu, F.
AU  - Maynard, G.
AU  - Mazzotta, Z.
AU  - Mehrling, T.J.
AU  - Molodozhentsev, A.Y.
AU  - Mosnier, A.
AU  - Mostacci, A.
AU  - Najmudin, Z.
AU  - Nguyen, F.
AU  - Niknejadi, P.
AU  - Oumbarek Espinos, D.
AU  - Pattathil, R.
AU  - Pompili, R.
AU  - Romeo, S.
AU  - Rossi, A.R.
AU  - Schaper, L.
AU  - Sheng, Z.M.
AU  - Shpakov, V.
AU  - Silva, L.O.
AU  - Silva, T.
AU  - Simon, C.
AU  - Specka, A.
AU  - Stella, A.
AU  - Streeter, M.J.V.
AU  - Svystun, E.N.
AU  - Symes, D.
AU  - Terzani, D.
AU  - Toci, G.
AU  - Tomassini, P.
AU  - Vaccarezza, C.
AU  - Vieira, J.M.
AU  - Vujanovic, M.
AU  - Walczak, R.
AU  - Walker, P.A.
AU  - Weikum, M.K.
AU  - Welsch, C.P.
AU  - Weng, S.M.
AU  - Wiggins, S.M.
AU  - Wolfenden, J.
AU  - Yoffe, S.
AU  - Zhu, J.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - EuPRAXIA, a Step Toward a Plasma-Wakefield Based Accelerator With High Beam Quality
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The EuPRAXIA project aims at designing the world’s first accelerator based on plasma-wakefield advanced technique, which can deliver a 5 GeV electron beam with simultaneously high charge, low emittance and low energy spread to user’s communities. Such challenging objectives can only have a chance to be achieved when particular efforts are dedicated to identify the subsequent issues and to find the way to solve them. Many injection/acceleration schemes and techniques have been explored by means of thorough simulations in more than ten European institutes to sort out the most appropriate ones. The specific issues of high charge, high beam quality and beam extraction then transfer to the user’s applications, have been tackled with many innovative approaches*. This article highlights the different advanced methods that have been employed by the EuPRAXIA collaboration and the preliminary results obtained. The needs in terms of laser and plasma parameters for such an accelerator are also summarized.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2291
EP  - 2295
KW  - plasma
KW  - laser
KW  - injection
KW  - acceleration
KW  - emittance
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEZZPLS2
UR  - http://jacow.org/ipac2019/papers/wezzpls2.pdf
ER  - 

TY  - CONF
AU  - Hunt, J.R.
AU  - Carli, C.
AU  - Dupuy, B.
AU  - Gamba, D.
AU  - Resta-López, J.
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Emittance Evolution of Low Energy Antiproton Beams in the Presence of Deceleration and Cooling
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The commissioning of the Extra Low Energy Antiproton (ELENA) ring has been completed before the start of the second long shutdown (LS2) at CERN. First beams to an experiment in a new experimental zone have as well already been delivered. ELENA will begin distributing 100 keV cooled antiproton beams to all antimatter experiments in 2021. This contribution presents measurements made using a novel scraping algorithm capable of determining the emittance of non-Gaussian beams in the presence of dispersive effects. The emittance is sampled during various sections of the ELENA deceleration cycle, investigating the efficiency of the electron cooler and extracting additional information from the beam. The electron cooler is shown to effectively reduce the transverse phase space after blow-up during deceleration. The beam is characterised before extraction for the purpose of tracking and optimisation of the new electrostatic transfer lines currently being installed. Finally, the application of the scraping algorithm to other machines with a scraper located in a dispersive region is discussed.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2697
EP  - 2700
KW  - emittance
KW  - electron
KW  - proton
KW  - antiproton
KW  - closed-orbit
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPGW090
UR  - http://jacow.org/ipac2019/papers/wepgw090.pdf
ER  - 

TY  - CONF
AU  - Salehilashkajani, A.
AU  - Ady, M.
AU  - Chritin, N.
AU  - Forck, P.
AU  - Glutting, J.
AU  - Jones, O.R.
AU  - Kersevan, R.
AU  - Marriott-Dodington, T.
AU  - Mazzoni, S.
AU  - Rossi, A.
AU  - Schneider, G.
AU  - Udrea, S.
AU  - Veness, R.
AU  - Welsch, C.P.
AU  - Zhang, H.D.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Commissioning of the Prototype for a New Gas Curtain Beam Profile Monitor Using Beam Induced Fluorescence for HL-LHC
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - A new supersonic gas-jet curtain based beam profile monitor is under development for minimally invasive simultaneous transverse profile diagnostics of proton and electron beams, at pressures compatible with LHC. The monitor makes use of a thin gas-jet curtain angled at 45 degrees with respect to the charged particle beams. The fluorescence caused by the interaction between the curtain and the beam can then be detected using a dedicated imaging system to determine its transverse profile. This contribution details design features of the monitor, discusses the gas-jet curtain formation and presents various experimental tests, including profile measurements of an electron beam using nitrogen and neon curtains. The gas-jet density was estimated by correlating it with the number of photons detected by the camera. These measurements are then compared with results obtained using a movable pressure gauge. This monitor has been commissioned in collaboration with CERN, GSI and the University of Liverpool. It serves as a first prototype of a final design that will be placed in the LHC beam line to measure the profile of the proton beam.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2709
EP  - 2712
KW  - electron
KW  - photon
KW  - gun
KW  - background
KW  - experiment
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPGW093
UR  - http://jacow.org/ipac2019/papers/wepgw093.pdf
ER  - 

TY  - CONF
AU  - Wolfenden, J.
AU  - Brandin, M.
AU  - Fiorito, R.B.
AU  - Kyle, B.S.
AU  - Mansten, E.
AU  - Pacey, T.H.
AU  - Shkvarunets, A.G.
AU  - Thorin, S.
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Coherent Transition Radiation Spatial Imaging as a Bunch Length Monitor
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - High-resolution bunch length measurement is a key component in the optimisation of beam quality in FELs, storage rings, and plasma-based accelerators. Simulations have shown that the profile of a coherent transition radiation (CTR) image produced by a charged particle beam is sensitive to bunch length and can thus be used as a diagnostic. This contribution presents the development progress of a novel bunch length monitor based on imaging the spatial distribution of CTR. Due to the bunch lengths studied, 10fs-100fs FWHM, the radiation of interest was in the THz range. This led to the development of a THz imaging system, which can be applied to both high and low energy electron beams. The associated benefits of this imaging distribution methodology over the typical angular distribution measurement are discussed. Building upon preliminary multi-shot proof of concept results last year, a new series of experiments have been conducted in the short pulse facility (SPF) at MAX IV. Single-shot measurements have been used to measure the exact point of maximum compression. Analysis from the proof of concept results last year, and initial results from the new measurements this year are discussed.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2713
EP  - 2716
KW  - radiation
KW  - electron
KW  - detector
KW  - simulation
KW  - focusing
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPGW095
UR  - http://jacow.org/ipac2019/papers/wepgw095.pdf
ER  - 

TY  - CONF
AU  - Zhang, H.D.
AU  - Ady, M.
AU  - Forck, P.
AU  - Glutting, J.
AU  - Jones, O.R.
AU  - Marriott-Dodington, T.
AU  - Mazzoni, S.
AU  - Rossi, A.
AU  - Salehilashkajani, A.
AU  - Schneider, G.
AU  - Udrea, S.
AU  - Veness, R.
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Development of Supersonic Gas-Sheet-Based Beam Profile Monitors
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Non-destructive beam profile monitoring is very desirable, essentially for any particle accelerator but particularly for high-energy and high-intensity machines. Supersonic gas jet-based monitors, detecting either the ionization or fluorescence of a gas sheet interacting with the primary beam to be characterized, allow for minimally invasive measurements. They can also be used over a wide energy range, from keV to TeV beams. This contribution gives an overview of the jet-based ionization and fluorescence beam profile monitors which have been developed, built and tested at the Cockcroft Institute. It discusses gas sheet generation, vacuum considerations, choice of gas species and detection methods.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2717
EP  - 2720
KW  - electron
KW  - photon
KW  - background
KW  - radiation
KW  - monitoring
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPGW096
UR  - http://jacow.org/ipac2019/papers/wepgw096.pdf
ER  - 

TY  - CONF
AU  - Valizadeh, R.
AU  - Aliasghari, S.
AU  - Dawson, K.
AU  - Dhanak, V.R.
AU  - Hannah, A.N.
AU  - Malyshev, O.B.
AU  - Stenning, G.B.G.
AU  - Turner, D.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - PVD Depostion of Nb₃Sn Thin Film on Copper Substrate from an Alloy Nb₃Sn Target
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - In this study we report on the PVD deposition of Nb₃Sn on Cu substrates with and without a thick Nb interlayer to produce Cu/Nb/Nb₃Sn and Cu/Nb₃Sn multilayer structures. The Nb₃Sn was sputtered directly from an alloy target at room and elevated temperatures. The dependence of the superconducting properties of the total structure on deposition parameters has been determined. The films have been characterized via SEM, XRD, EDX and SQUID magnetometer measurements. Analysis showed that the composition at both room and elevated temperature was within the desired stoichiometry of 24’25 at%. However, superconductivity was only observed for deposition at elevated temperature or post annealing at 650 °C. The critical temperature was determined to be in the range of 16.8 to 17.4 K. In the case of bilayer deposition, copper segregation from the interface all the way to the surface was observed.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2818
EP  - 2821
KW  - niobium
KW  - cavity
KW  - site
KW  - interface
KW  - HOM
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPRB011
UR  - http://jacow.org/ipac2019/papers/weprb011.pdf
ER  - 

TY  - CONF
AU  - Rodin, V.
AU  - Hunt, J.R.
AU  - Resta-López, J.
AU  - Veglia, B.
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Multi-objective Optimization of 3D Beam Tracking in Electrostatic Beamlines
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - After CERN’s Long Shutdown 2 (LS2) the Extra Low Energy Antiproton (ELENA) ring will begin providing extremely low energy (100 keV) antiproton beams to the antimatter experiments in the AD hall. To allow for simultaneous operation and guarantee maximum efficiency, all transfer lines will be based on electrostatic optics and short pulse (∼100 ns) deflectors. Currently, only a limited number of simulation codes allow a realistic representation of these elements, limiting the capabilities for beam quality optimization. In this contribution methods for modelling realistic electrostatic optical elements and perform 3D tracking studies through these are presented. A combination of finite element methods and experimental measurements are used along with a modified version of the G4Beamline and BMAD codes. Multi-objective optimization techniques are then applied to optimize beam transfer and beam quality at various points along the transfer lines.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3263
EP  - 3266
KW  - simulation
KW  - experiment
KW  - quadrupole
KW  - lattice
KW  - storage-ring
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPTS060
UR  - http://jacow.org/ipac2019/papers/wepts060.pdf
ER  - 

TY  - CONF
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Accelerator Optimization using Big Data Science Techniques
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Managing, analyzing and interpreting large, complex datasets and high rates of data flow is a growing challenge for many areas of science and industry. At particle accelerators and light sources, this data flow occurs both, in the experiments as well as the machine itself. The Liverpool Big Data Science Center for Doctoral Training (LIV. DAT) was established in 2017 to tackle the challenges in Monte Carlo modelling, high performance computing, machine learning and data analysis across particle, nuclear and astrophysics, as well as accelerator science. LIV. DAT is currently training 24 PHD students, making it one of the largest initiatives of this type in the world. This contribution presents research results obtained to date in projects that focus on the application of big data techniques within accelerator R&D.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3370
EP  - 3373
KW  - plasma
KW  - experiment
KW  - radiation
KW  - electron
KW  - proton
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPTS106
UR  - http://jacow.org/ipac2019/papers/wepts106.pdf
ER  - 

TY  - CONF
AU  - Ibison, M.G.
AU  - Adli, E.
AU  - Christoforo, G.
AU  - Gjersdal, H.
AU  - Shea, T.J.
AU  - Thomas, C.A.
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Designing the European Spallation Source Tuning Dump Beam Imaging System
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The first section of the European Spallation Source (ESS) to receive high-energy protons when live operation begins will be the Tuning Dump beam-line. The dump line will be used during accelerator commissioning to tune the linac, and must accept the full range of ESS energies up to 2 GeV, from 5µs probe pulse to full 2.86ms pulse length, and beam sizes up to the 250 mm limit of the physical aperture, although the allowed pulse rate will be restricted by the thermal capacity of the dump. An imaging system has been developed to view remotely the transverse beam profile in the section immediately before the dump entrance, using insertable scintillator screens. This contribution presents the principal design parameters for this system, with particular reference to the techniques used in assessing the radiation and thermal environments and their impact on the selection of locations for the imaging cameras, and the specification of the mechanical screen actuators. The predicted optical performance of the system is also summarised.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3374
EP  - 3377
KW  - proton
KW  - radiation
KW  - target
KW  - linac
KW  - optics
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPTS107
UR  - http://jacow.org/ipac2019/papers/wepts107.pdf
ER  - 

TY  - CONF
AU  - Golm, J.
AU  - De Gersem, H.
AU  - Fernandes, M.F.
AU  - Haider, D.M.
AU  - Kurian, F.
AU  - Marsic, N.
AU  - Müller, W.F.O.
AU  - Neubert, R.
AU  - Schmelz, M.
AU  - Schmidl, F.
AU  - Schwickert, M.
AU  - Seidel, P.
AU  - Sieber, T.
AU  - Stolz, R.
AU  - Stöhlker, T.
AU  - Tan, J.
AU  - Tympel, V.
AU  - Welsch, C.P.
AU  - Zakosarenko, V.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Different Versions of Cryogenic Current Comparators with Magnetic Core for Beam Current Measurements
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - For more than 20 years Cryogenic Current Comparators (CCC) are used to measure the current of charged particle beams with low intensity (nA-range). The device was first established at GSI in Darmstadt and was improved over the past two decades by the cooperation of institutes in Jena, GSI and CERN. The improved versions differ in material parameters and electronics to increase the resolution and in dimensions in order to meet the requirements of the respective application. The device allows non-destructive measurements of the charged particle beam current. The azimuthal magnetic field which is generated by the beam current is detected by low temperature Superconducting Quantum Interference Device (SQUID) current sensors. A complex shaped superconductor cooled down to 4.2 K is used as magnetic shielding and a high permeability core serves as flux concentrator. Three versions of the CCC shall be presented in this work: (1) GSI-Pb-CCC which was running at GSI Darmstadt in a transfer line, (2) CERN-Nb-CCC currently installed in the Antiproton Decelerator at CERN and (3) GSI-Nb-CCC-XD which will be operating in the CRYRING at GSI 2019. Noise, signal and drift measurements were performed in the Cryo-Detector Lab at the University of Jena.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3431
EP  - 3434
KW  - cryogenics
KW  - shielding
KW  - pick-up
KW  - operation
KW  - proton
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-THYYPLS2
UR  - http://jacow.org/ipac2019/papers/thyypls2.pdf
ER  - 

TY  - CONF
AU  - Yap, J.S.L.
AU  - Bal, N.J.S.
AU  - Fransen, M.
AU  - Kacperek, A.
AU  - Linde, F.
AU  - Parsons, J.L.
AU  - Resta-López, J.
AU  - Schnuerer, R.
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Beam Characterisation Using MEDIPIX3 and EBT3 Film at the Clatterbridge Proton Therapy Beamline
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The Clatterbridge Cancer Centre (CCC) in the UK is a particle therapy facility providing treatment for ocular cancers using a 60 MeV passively scattered proton therapy beam. A model of the beamline using the Monte Carlo Simulation toolkit Geant4 has been developed for accurate characterisation of the beam. In order to validate the simulation, a study of the beam profiles along the delivery system is necessary. Beam profile measurements have been performed at multiple positions in the CCC beam line using both EBT3 GAFchromic film and Medipix3, a single quantum counting chip developed specifically for medical applications, typically used for x-ray detection. This is the first time its performance has been tested within a clinical, high proton flux environment. EBT3 is the current standard for conventional radiotherapy film dosimetry and was used to determine the dose and for correlation to fluence measured by Medipix3. The count rate linearity and doses recorded with Medipix3 were evaluated across the full range of available beam intensities, up to 3.12 x 10¹⁰ protons/s. The applicability of Medipix3 for proton therapy dosimetry is discussed and compared against the performance of EBT3.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3510
EP  - 3513
KW  - proton
KW  - detector
KW  - simulation
KW  - radiation
KW  - experiment
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-THPMP033
UR  - http://jacow.org/ipac2019/papers/thpmp033.pdf
ER  - 

TY  - CONF
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Performance Optimization of Ion Beam Therapy
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Proton beam therapy promises significant advantages over other forms of radiation therapy. However, to assure the best possible cancer care for patients further R&D into novel beam imaging and patient diagnostics, enhanced biological and physical models in Monte Carlo codes, as well as clinical facility design and optimization is required. Within the pan-European Optimization of Medical Accelerators (OMA) project collaborative research is being carried out between universities, research and clinical facilities, and industry in all of these areas. This contribution presents results from studies into low-intensity proton beam diagnostics, prompt gamma-based range verification in proton therapy, as well as prospects for a new proton irradiation facility for radiobiological measurements at an 18 MeV cyclotron within OMA. These results are then connected to the wider project aims of enhancing ion beam therapy. A summary of past and future events organised by the OMA consortium is also given.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3537
EP  - 3540
KW  - proton
KW  - FEL
KW  - diagnostics
KW  - medical-accelerators
KW  - simulation
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-THPMP042
UR  - http://jacow.org/ipac2019/papers/thpmp042.pdf
ER  - 

TY  - CONF
AU  - Schnuerer, R.
AU  - Price, T.
AU  - Szumlak, T.
AU  - Welsch, C.P.
AU  - Yap, J.S.L.
AU  - Zhang, H.D.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Non-Invasive Beam Monitoring Using LHCb VELO With 40 MeV Protons
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - In proton beam therapy, knowledge of the detailed beam properties is essential to ensure effective dose delivery to the patient. In clinical practice, currently used interceptive ionisation chambers require daily calibration and suffer from slow response time. This contribution presents a new non-invasive method for dose online monitoring. It is based on the silicon multi-strip sensor LHCb VELO (VErtex LOcator), developed originally for the LHCb experiment at CERN. The semi-circular detector geometry offers the possibility to measure beam intensity through halo measurements without interfering with the beam core. Results from initial tests using this monitor in the 40 MeV proton beamline at the University of Birmingham, UK are shown. Synchronised with an ionisation chamber and the RF cyclotron frequency, VELO was used as online monitor by measuring the intensity in the proton beam halo and using this information as basis for 3D beam profiles. Experimental results are discussed.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3541
EP  - 3544
KW  - detector
KW  - proton
KW  - cyclotron
KW  - experiment
KW  - monitoring
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-THPMP043
UR  - http://jacow.org/ipac2019/papers/thpmp043.pdf
ER  - 

TY  - CONF
AU  - Weikum, M.K.
AU  - Akhter, T.
AU  - Alesini, D.
AU  - Alexandrova, A.S.
AU  - Anania, M.P.
AU  - Andreev, N.E.
AU  - Andriyash, I.A.
AU  - Aschikhin, A.
AU  - Audet, T.
AU  - Aßmann, R.W.
AU  - Bacci, A.
AU  - Barna, I.F.
AU  - Beaton, A.
AU  - Beck, A.
AU  - Beluze, A.
AU  - Bernhard, A.
AU  - Bielawski, S.
AU  - Bisesto, F.G.
AU  - Brandi, F.
AU  - Brinkmann, R.
AU  - Bründermann, E.
AU  - Bussmann, M.H.
AU  - Bussolino, G.
AU  - Büscher, M.
AU  - Chancé, A.
AU  - Chen, M.
AU  - Chiadroni, E.
AU  - Cianchi, A.
AU  - Clarke, J.A.
AU  - Cole, J.
AU  - Couprie, M.-E.
AU  - Croia, M.
AU  - Cros, B.
AU  - Crump, P.A.
AU  - Dattoli, G.
AU  - De Nicola, S.
AU  - Del Dotto, A.
AU  - Delerue, N.
AU  - Dias, J.M.
AU  - Dorda, U.
AU  - Fedele, R.
AU  - Ferran Pousa, A.
AU  - Ferrario, M.
AU  - Filippi, F.
AU  - Fiore, G.
AU  - Fonseca, R.A.
AU  - Galimberti, M.
AU  - Gallo, A.
AU  - Ghaith, A.
AU  - Giove, D.
AU  - Giribono, A.
AU  - Gizzi, L.A.
AU  - Grüner, F.J.
AU  - Habib, A.F.
AU  - Haefner, C.
AU  - Heinemann, T.
AU  - Hidding, B.
AU  - Holzer, B.J.
AU  - Hooker, S.M.
AU  - Hosokai, T.
AU  - Huebner, M.
AU  - Irman, A.
AU  - Jafarinia, F.
AU  - Jaroszynski, D.A.
AU  - Joshi, C.
AU  - Kaluza, M.
AU  - Kando, M.
AU  - Karger, O.S.
AU  - Karsch, S.
AU  - Khazanov, E.
AU  - Khikhlukha, D.
AU  - Knetsch, A.
AU  - Kocon, D.
AU  - Koester, P.
AU  - Kononenko, O.S.
AU  - Korn, G.
AU  - Kostyukov, I.
AU  - Kruchinin, K.O.
AU  - Labate, L.
AU  - Le Blanc, C.
AU  - Lechner, C.
AU  - Leemans, W.
AU  - Lehrach, A.
AU  - Li, X.
AU  - Libov, V.
AU  - Lifschitz, A.
AU  - Litvinenko, V.
AU  - Lu, W.
AU  - Lundh, O.
AU  - Maier, A.R.
AU  - Malka, V.
AU  - Manahan, G.G.
AU  - Mangles, S.P.D.
AU  - Marchetti, B.
AU  - Martinez de la Ossa, A.
AU  - Martins, J.L.
AU  - Mason, P.D.
AU  - Massimo, F.
AU  - Mathieu, F.
AU  - Maynard, G.
AU  - Mazzotta, Z.
AU  - Molodozhentsev, A.Y.
AU  - Mostacci, A.
AU  - Murphy, C.D.
AU  - Müller, A.-S.
AU  - Najmudin, Z.
AU  - Nghiem, P.A.P.
AU  - Nguyen, F.
AU  - Niknejadi, P.
AU  - Osterhoff, J.
AU  - Oumbarek Espinos, D.
AU  - Papadopoulos, D.N.
AU  - Patrizi, B.
AU  - Pattathil, R.
AU  - Petrillo, V.
AU  - Pocsai, M.A.
AU  - Poder, K.
AU  - Pompili, R.
AU  - Pribyl, L.
AU  - Pugacheva, D.
AU  - Romeo, S.
AU  - Rossetti Conti, M.
AU  - Rossi, A.R.
AU  - Rossmanith, R.
AU  - Roussel, E.
AU  - Sahai, A.A.
AU  - Sarri, G.
AU  - Schaper, L.
AU  - Scherkl, P.
AU  - Schramm, U.
AU  - Schroeder, C.B.
AU  - Scifo, J.
AU  - Serafini, L.
AU  - Sheng, Z.M.
AU  - Siders, C.
AU  - Silva, L.O.
AU  - Silva, T.
AU  - Simon, C.
AU  - Sinha, U.
AU  - Specka, A.
AU  - Streeter, M.J.V.
AU  - Svystun, E.N.
AU  - Symes, D.
AU  - Szwaj, C.
AU  - Tauscher, G.E.
AU  - Terzani, D.
AU  - Thompson, N.
AU  - Toci, G.
AU  - Tomassini, P.
AU  - Torres, R.
AU  - Ullmann, D.
AU  - Vaccarezza, C.
AU  - Vannini, M.
AU  - Vieira, J.M.
AU  - Villa, F.
AU  - Wahlstrom, C.-G.
AU  - Walczak, R.
AU  - Walker, P.A.
AU  - Wang, K.
AU  - Welsch, C.P.
AU  - Wiggins, S.M.
AU  - Wolfenden, J.
AU  - Xia, G.X.
AU  - Yabashi, M.
AU  - Zhu, J.
AU  - Zigler, A.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Status of the Horizon 2020 EuPRAXIA Conceptual Design Study
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The Horizon 2020 Project EuPRAXIA (European Plasma Research Accelerator with eXcellence In Applications) is producing a conceptual design report for a highly compact and cost-effective European facility with multi-GeV electron beams accelerated using plasmas. EuPRAXIA will be set up as a distributed Open Innovation platform with two construction sites, one with a focus on beam-driven plasma acceleration (PWFA) and another site with a focus on laser-driven plasma acceleration (LWFA). User areas at both sites will provide access to FEL pilot experiments, positron generation and acceleration, compact radiation sources, and test beams for HEP detector development. Support centres in four different countries will complement the pan-European implementation of this infrastructure.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3638
EP  - 3642
KW  - plasma
KW  - laser
KW  - electron
KW  - acceleration
KW  - site
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-THPGW026
UR  - http://jacow.org/ipac2019/papers/thpgw026.pdf
ER  - 

TY  - CONF
AU  - Perera, T.A.
AU  - Muggli, P.
AU  - Welsch, C.P.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Seeded Self-Modulation of Transversely Asymmetric Long Proton Beams in Plasma
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The AWAKE experiment at CERN recently demonstrated the world’s first acceleration of electrons in a proton-driven plasma wakefield accelerator*. Such accelerators show great promise for a new generation of linear e-p colliders using ~1-10 GV/m accelerating fields. Effectively driving a wakefield requires 100-fold self-modulation of the 12 cm Super Proton Synchrotron (SPS) proton beam using a plasma-driven process which must be care-fully controlled to saturation. Previous works have modelled this process assuming azimuthal symmetry of the transverse spatial and momentum profiles **, ***. In this work, 3D particle-in-cell simulations are used to model the self-modulation of such non-round beams. Implications of such effects for efficiently sustaining resonant wakefields are examined.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3757
EP  - 3760
KW  - plasma
KW  - wakefield
KW  - proton
KW  - focusing
KW  - simulation
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-THPGW072
UR  - http://jacow.org/ipac2019/papers/thpgw072.pdf
ER  -