TY - CONF AU - Miyamoto, R. AU - Bebb, R.E. AU - Bergman, E.C. AU - Bergstrom, I. AU - Bertrand, B. AU - Celona, L. AU - Danared, H. AU - Derrez, C.S. AU - Donegani, E.M. AU - Eshraqi, M. AU - Esteban Müller, J.F. AU - Fay, T. AU - Grishin, V. AU - Gålnander, B. AU - Haghtalab, S. AU - Hassanzadegan, H. AU - Jansson, A. AU - Kocevar, H. AU - Laface, E. AU - Levinsen, Y. AU - Mansouri, M. AU - Martins, C.A. AU - Martins, J.P.S. AU - Milas, N. AU - Muñoz, M. AU - Neri, L. AU - Nilsson, E. AU - Plostinar, D.C. AU - Rosati, C. AU - Shea, T.J. AU - Sosa, A.G. AU - Tarkeshian, R. AU - Tchelidze, L. AU - Thomas, C.A. AU - van Velze, P.L. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - First Results of Beam Commissioning on the ESS Site for the Ion Source and Low Energy Beam Transport J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - The European Spallation Source (ESS), currently under construction in Lund, Sweden, will be a spallation neutron source driven by a proton linac of an unprecedented 5 MW beam power. Such a high power requires its ion source (IS) to produce proton beam pulses at 14 Hz with a high peak current more than 62.5 mA and a long plateau up to §I{3}{ms}. The IS and the following low energy beam transport (LEBT) section were manufactured and tested with beam to meet ESS requirements at INFN-LNS and delivered to ESS towards the end of 2017. Beam commissioning of these two sections on the ESS site has started in September 2018 and will continue until the end of June 2019. This paper provides an overview on this first beam commissioning period at ESS and also presents results of IS characterization and testing on LEBT functionalities. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1118 EP - 1121 KW - LEBT KW - MMI KW - solenoid KW - site KW - ion-source DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-MOPTS103 UR - http://jacow.org/ipac2019/papers/mopts103.pdf ER - TY - CONF AU - Schillaci, F. AU - Andò, L. AU - Cirrone, G.A.P. AU - Cuttone, G. AU - Maggiore, M. AU - Margarone, D. AU - Milluzzo, G. AU - Pipek, J. AU - Romano, F. AU - Russo, A.D. AU - Scuderi, V. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Advanced Beam Transport Solutions for ELIMAIA: A User Oriented Laser-Driven Ion Beamlines J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Laser-target acceleration represents a promising alternative to standard accelerators for several potential applications, especially medical ones, but some extreme features make laser-driven ion beams not directly usable. Therefore, a large effort has been recently devoted to development of beam-transport solutions to obtain controlled and reproducible beams. In this framework, a collaboration has been established between INFN-LNS (IT) and Eli-Beamlines-IoP (CZ) to realize a complete transport beam-line, named ELIMED, dedicated to the transport, diagnostics and dosimetry of laser-driven ion beams. The transport beamline is made by three sections: a set of high field gradient permanent magnet quadrupoles with large acceptance is used to collect and inject ions in the selection section; a magnetic chicane made of C-shaped resistive dipoles is able to select beams with high resolution and to work as an active energy modulator. The final beam shaping is done by two resistive quadrupoles. In this contribution the status of the beamline is described together with the tests performed with conventional accelerators at INFN-LNS. Feasibility study of possible upgrades are also reported. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1936 EP - 1939 KW - laser KW - proton KW - dipole KW - quadrupole KW - permanent-magnet DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-TUPTS005 UR - http://jacow.org/ipac2019/papers/tupts005.pdf ER - TY - CONF AU - D'Agostino, G. AU - Calabretta, L. AU - Kleeven, W.J.G.M. AU - Rifuggiato, D. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - A CENTRAL REGION UPGRADE OF THE k800 SUPERCONDUCTING CYCLOTRON AT INFN-LNS J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - The Superconducting Cyclotron (CS) at INFN-LNS in Catania is currently under an upgrade process. The plan is to deliver beams of ions with mass number 𝐴 ≤ 40 with power up to 10 kW. This ambitious goal can be achieved increasing the efficiency of the injection and extraction processes. An extraction efficiency close to 100% is expected by extracting the specific ion beams from the CS by stripping and no longer by electrostatic deflectors. The beams are injected axially and bent onto the median plane with a spiral inflector. Currently, the injection efficiency stays around 15%, also including the effect of a drift buncher placed in the axial injection line. In order to increase the injection efficiency, the study of an upgraded CS central region is ongoing at INFN-LNS. In this paper, the results of simulations of beam tracking through the cyclotron axial bore, the spiral inflector, the central region and further up to the extraction system are presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1975 EP - 1978 KW - cyclotron KW - extraction KW - injection KW - simulation KW - acceleration DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-TUPTS023 UR - http://jacow.org/ipac2019/papers/tupts023.pdf ER - TY - CONF AU - Xu, S.W. AU - Calabretta, L. AU - Chen, G. AU - Karamyshev, O. AU - Karamysheva, G.A. AU - Shirkov, G. AU - Xu, M. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Design and Analysis of the Cold Cathode Ion Source for 200 MeV Superconducting Cyclotron J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - SC200 is a superconducting isochronous cyclotron which generates 200 MeV, 400 nA proton beam for particle therapy. The cold-cathode-type Penning ion gauge (PIG) ion source for the internal ion source of SC200 has been selected as an alternative and preliminary designed. In this paper, design of ion source and test bench are demonstrated. Currently, the properties of ion source have been simulated for a variety of electric field distributions and magnetic field strengths. The secondary electron emission in electromagnetic field has been simulated. It provides reference for the optimization design of arc chamber. In addition, the sample of cold-cathode-type ion source has been tested on the test bench and extracted beam intensity has been measured over 200 μA. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2040 EP - 2042 KW - cathode KW - ion-source KW - electron KW - proton KW - cyclotron DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-TUPTS050 UR - http://jacow.org/ipac2019/papers/tupts050.pdf ER - TY - CONF AU - Michelato, P. AU - Aurnia, S. AU - Bertucci, M. AU - Bignami, A. AU - Bosotti, A. AU - Chiodini, M. AU - D'Ambros, A. AU - Leonardi, O. AU - Miraglia, A. AU - Monaco, L. AU - Pagani, C. AU - Paparella, R. AU - Sagliano, L. AU - Sertore, D. AU - Vecchio, G. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Status of the ESS Medium Beta Cavities at INFN - LASA J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - INFN-LASA contributes in-kind to the European Spallation Source ERIC with 36 6-cell cavities for the Medium Beta section of the Superconducting Linac. After having developed the electromagnetic and mechanical models, few prototypes have been produced and tested. Based on this experience, we are now supervisioning the cavity production at the industry, the resonators test at DESY and the delivery to CEA at Saclay. In this paper, we report on the status of the overall INFN-LASA contribution including also document handling, interface data exchange and QA/QC. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2211 EP - 2214 KW - cavity KW - status KW - controls KW - HOM KW - niobium DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-TUPTS119 UR - http://jacow.org/ipac2019/papers/tupts119.pdf ER - TY - CONF AU - Faillace, L. AU - Behtouei, M. AU - Dolgashev, V.A. AU - Spataro, B. AU - Torrisi, G. AU - Variola, A. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Compact Ultra High-Gradient Ka-Band Accelerating Structure for Research, Medical and Industrial Applications J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Technological advancements are strongly required to fulfil demands for new accelerators devices from the compact or portable devices for radiotherapy to mo-bile cargo inspections and security, biology, energy and environmental applications, and ultimately for the next generation of colliders. In the frame of the collab-oration with INFN-LNF, SLAC (USA) we are working closely on design studies, fabrication and high-power operation of Ka-band accelerating structures. In par-ticular, new manufacturing techniques for hard-copper structures are being investigated in order to determine the maximum sustainable gradients above 150 MV/m and extremely low probability of RF breakdown. In this paper, the preliminary RF and mechanical design as well as beam dynamics estimations for a Ka-Band accelerating structure at 35 GHz are presented together with discussions on practical accelerating gradients and maximum average beam current throughput. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2842 EP - 2845 KW - linac KW - electron KW - accelerating-gradient KW - operation KW - gun DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-WEPRB020 UR - http://jacow.org/ipac2019/papers/weprb020.pdf ER - TY - CONF AU - Torrisi, G. AU - Castorina, G. AU - Celona, L. AU - Dolgashev, V.A. AU - Faillace, L. AU - Gammino, S. AU - Leonardi, O. AU - Mauro, G.S. AU - Sorbello, G. AU - Spataro, B. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Low Power RF Test of a Quadrupole-free X-Band Mode Launcher for High Brightness Applications 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 work we present the low power RF characterization of a novel TM01 X-band mode launcher for the new generation of high brightness RF photo-injectors. The proposed mode launcher exploits a fourfold symmetry which minimizes both the dipole and the quadrupole fields in order to mitigate the emittance growth in the early stages of the acceleration process. Two identical aluminum mode launchers have been assembled and measured in back-to-back configurations for three different central waveguide lengths. From the back-to-back results we infer the performance of each mode launcher. The low power RF test, performed at the Istituto Nazionale di Fisica Nucleare Laboratori Nazionali del Sud (INFN-LNS), validate both the numerical simulations and the quality of fabrication. An oxygen-free high-conductivity copper version of the device is being manufactured for high power and ultra high vacuum tests that are planned to be conducted at SLAC PB - JACoW Publishing CP - Geneva, Switzerland SP - 2856 EP - 2859 KW - GUI KW - brightness KW - quadrupole KW - simulation KW - electron DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-WEPRB024 UR - http://jacow.org/ipac2019/papers/weprb024.pdf ER - TY - CONF AU - Chen, G. AU - Calabretta, L. AU - Caruso, A.C. AU - Chao, C. AU - Karamyshev, O. AU - Karamysheva, G.A. AU - Liu, G. AU - Long, X.Y. AU - Peng, Z. AU - Shirkov, G. AU - Yu, C.S. AU - Zhang, X. AU - Zhao, Y. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Commissioning of RF System of the 200 MeV Proton Cyclotron J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - The SC200 superconducting accelerator which is designed for proton therapy is currently under con-struction. The RF (Radio Frequency) system has been designed and constructed as a subsystem of the SC200. To verify the stability of the RF system, a high-power feeding test was performed for the cavity. This paper mainly reports on the overview of RF systems and the prelimary high-power commissioning, as well as the problems found and improvements made during the commissioning process. The results show that the RF system has initially achieved the designed goal, and each loop (amplitude, tuning, phase) can work effec-tively. The cavity can operate in a ~50 kW continuous wave state. Next, the formal RF conditioning will be carried out after the complete assembly of cyclotron, so as to confirm the cavity can run smoothly under 80 kW, which is part of the whole commissioning process. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2877 EP - 2879 KW - cavity KW - cyclotron KW - multipactoring KW - MMI KW - coupling DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-WEPRB030 UR - http://jacow.org/ipac2019/papers/weprb030.pdf ER - TY - CONF AU - Torrisi, G. AU - Celona, L. AU - De Angelis, C. AU - Gammino, S. AU - Locatelli, A. AU - Mascali, D. AU - Mauro, G.S. AU - Sorbello, G. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Numerical Study of Photonic-Crystal-Based Dielectric Accelerators J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - All-dielectric electromagnetic band gap (EBG) waveguides structures promise significant improvement of accelerating gradient of laser-driven acceleration with the potential to miniaturize the accelerator itself. In this work we study photonic crystal structures designed for acceleration of relativistic electrons. We explore the performance of the all-dielectric EBG accelerating waveguide structures thanks to full wave electromagnetic simulations of couplers and accelerating waveguides. The characteristic interaction impedance, accelerating gradient and all the key parameters that are typically used to characterize linear accelerators are evaluated and used to compare the properties of the accelerating mode field distribution in different geometries. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3653 EP - 3656 KW - GUI KW - photon KW - acceleration KW - electron KW - impedance DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-THPGW033 UR - http://jacow.org/ipac2019/papers/thpgw033.pdf ER -