Paper |
Title |
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MOPAB064 |
Photoinjector Emittance Measurement at STAR |
257 |
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- A. Bacci, C. Curatolo, I. Drebot, L. Serafini, V. Torri
Istituto Nazionale di Fisica Nucleare, Milano, Italy
- R.G. Agostino, R. Barberi, V. Formoso, M. Ghedini, F. Martire, C. Pace
UNICAL, Arcavacata di Rende, Italy
- D. Alesini, M. Bellaveglia, J.J. Beltrano, F.G. Bisesto, G. Borgese, B. Buonomo, G. Di Pirro, G. Di Raddo, A. Esposito, A. Gallo, A. Ghigo, F. Iungo, A. Papa, L. Pellegrino, A. Stella, C. Vaccarezza, S. Vescovi
INFN/LNF, Frascati (Roma), Italy
- A. Cianchi
Università di Roma II Tor Vergata, Roma, Italy
- G. D'Auria, A. Fabris, M. Marazzi
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
- V. Petrillo
Universita' degli Studi di Milano, Milano, Italy
- A. Policicchio
UniCal & INFN CS, Arcavacata di Rende (CS), Italy
- E. Puppin
Politecnico/Milano, Milano, Italy
- M. Rossetti Conti
Universita' degli Studi di Milano & INFN, Milano, Italy
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STAR is an advanced Thomson source of monochromatic and tunable, ps-long, polarised X-ray beams in the 40-140 keV range. The commissioning has started at the Univ. of Calabria (Italy). The light source is driven by a high-brightness, low-emittance electron beam produced in a LINAC allowing for the source tunability and spectral density. This note reports on an emittance measurement schema based on the insertion of a slit mask in the vacuum chamber dedicated to the photocathode laser entrance. Results of the simulation of the measurement technique are reported, and the use of the data for the optimisation of the accelerator performance are detailed. The experimental setup and the application developed in EPICS for image recording and analysis are also described.
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reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB064
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MOPVA016 |
ELI-NP GBS Status |
880 |
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- A. Giribono, M. Marongiu, A. Mostacci, V. Pettinacci
INFN-Roma, Roma, Italy
- S. Albergo
INFN-CT, Catania, Italy
- D. Alesini, M. Bellaveglia, B. Buonomo, F. Cioeta, E. Di Pasquale, G. Di Pirro, A. Esposito, A. Falone, G. Franzini, O. Frasciello, A. Gallo, S. Guiducci, S. Incremona, F. Iungo, V.L. Lollo, L. Pellegrino, L. Piersanti, S. Pioli, R. Ricci, U. Rotundo, L. Sabbatini, A. Stella, S. Tomassini, C. Vaccarezza, A. Variola
INFN/LNF, Frascati (Roma), Italy
- A. Bacci, C. Curatolo, I. Drebot, V. Petrillo, A.R. Rossi, L. Serafini
Istituto Nazionale di Fisica Nucleare, Milano, Italy
- N. Bliss, C. Hill
STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
- G. Campogiani
Rome University La Sapienza, Roma, Italy
- P. Cardarelli, M. Gambaccini
INFN-Ferrara, Ferrara, Italy
- F. Cardelli, A. Mostacci, L. Palumbo, A. Vannozzi
University of Rome La Sapienza, Rome, Italy
- F. Cardelli, L. Palumbo
INFN-Roma1, Rome, Italy
- K. Cassou, K. Dupraz, A. Martens, C.F. Ndiaye, Z.F. Zomer
LAL, Orsay, France
- G. D'Auria
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
- L. Sabato
U. Sannio, Benevento, Italy
- M. Veltri
INFN-FI, Sesto Fiorentino, Italy
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New generation of Compton sources are developing in different countries to take advantage of the photon energy amplification given by the Compton backscattering effect. In this framework the Eurogammas international collaboration is producing a very high brilliance gamma source for the Nuclear Pillar of the Exterme Light Infrastructure program (ELI). At present there is a lot of effort in the mass production of all the components and in the developments and tests of the different high technology devices that will operate in the gammas beam source, like the optical recirculator and the high gradient - high average current warm C band accelerating sections. In this paper we will provide a general overview of the GBS status and of the perspectives for the future integration phase.
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DOI • |
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※ https://doi.org/10.18429/JACoW-IPAC2017-MOPVA016
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TUOBB3 |
HORIZON 2020 EuPRAXIA Design Study |
1265 |
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- P.A. Walker, R.W. Aßmann, J. Bödewadt, R. Brinkmann, J. Dale, U. Dorda, A. Ferran Pousa, A.F. Habib, T. Heinemann, O. S. Kononenko, C. Lechner, B. Marchetti, A. Martinez de la Ossa, T.J. Mehrling, P. Niknejadi, J. Osterhoff, K. Poder, E.N. Svystun, G.E. Tauscher, M.K. Weikum, J. Zhu
DESY, Hamburg, Germany
- D. Alesini, M.P. Anania, F.G. Bisesto, E. Chiadroni, M. Croia, M. Ferrario, F. Filippi, A. Gallo, A. Mostacci, R. Pompili, S. Romeo, J. Scifo, C. Vaccarezza, F. Villa
INFN/LNF, Frascati (Roma), Italy
- A.S. Alexandrova, R.B. Fiorito, C.P. Welsch, J. Wolfenden
The University of Liverpool, Liverpool, United Kingdom
- A.S. Alexandrova, R.B. Fiorito, C.P. Welsch, J. Wolfenden
Cockcroft Institute, Warrington, Cheshire, United Kingdom
- N.E. Andreev, D. Pugacheva
JIHT RAS, Moscow, Russia
- T. Audet, B. Cros, G. Maynard
CNRS LPGP Univ Paris Sud, Orsay, France
- A. Bacci, D. Giove, V. Petrillo, A.R. Rossi, L. Serafini
Istituto Nazionale di Fisica Nucleare, Milano, Italy
- I.F. Barna, M.A. Pocsai
Wigner Research Centre for Physics, Institute for Particle and Nuclear Physics, Budapest, Hungary
- A. Beaton, P. Delinikolas, B. Hidding, D.A. Jaroszynski, F.Y. Li, G.G. Manahan, P. Scherkl, Z.M. Sheng, M.K. Weikum
USTRAT/SUPA, Glasgow, United Kingdom
- A. Beck, A. Specka
LLR, Palaiseau, France
- A. Beluze, M. Mathieu, D.N. Papadopoulos
LULI, Palaiseau, France
- A. Bernhard, E. Bründermann, A.-S. Müller
KIT, Karlsruhe, Germany
- S. Bielawski
PhLAM/CERLA, Villeneuve d'Ascq, France
- F. Brandi, G. Bussolino, L.A. Gizzi, P. Koester, B. Patrizi, G. Toci, M. Vannini
INO-CNR, Pisa, Italy
- O. Bringer, A. Chancé, O. Delferrière, J. Fils, D. Garzella, P. Gastinel, X. Li, A. Mosnier, P.A.P. Nghiem, J. Schwindling, C. Simon
CEA/IRFU, Gif-sur-Yvette, France
- M. Büscher, A. Lehrach
FZJ, Jülich, Germany
- M. Chen, L. Yu
Shanghai Jiao Tong University, Shanghai, People's Republic of China
- A. Cianchi
Università di Roma II Tor Vergata, Roma, Italy
- J.A. Clarke, N. Thompson
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
- M.-E. Couprie
SOLEIL, Gif-sur-Yvette, France
- G. Dattoli, F. Nguyen
ENEA C.R. Frascati, Frascati (Roma), Italy
- N. Delerue
LAL, Orsay, France
- J.M. Dias, R.A. Fonseca, J.L. Martins, L.O. Silva, U. Sinha, J. Vieira
IPFN, Lisbon, Portugal
- K. Ertel, M. Galimberti, R. Pattathil, D. Symes
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
- J. Fils
GSI, Darmstadt, Germany
- A. Giribono
INFN-Roma, Roma, Italy
- L.A. Gizzi
INFN-Pisa, Pisa, Italy
- F.J. Grüner, A.R. Maier
CFEL, Hamburg, Germany
- F.J. Grüner, T. Heinemann, B. Hidding, O.S. Karger, A. Knetsch, A.R. Maier
University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
- C. Haefner
LLNL, Livermore, California, USA
- B.J. Holzer
CERN, Geneva, Switzerland
- S.M. Hooker
University of Oxford, Clarendon Laboratory, Oxford, United Kingdom
- S.M. Hooker, R. Walczak
JAI, Oxford, United Kingdom
- T. Hosokai
Osaka University, Graduate School of Engineering, Osaka, Japan
- C. Joshi
UCLA, Los Angeles, California, USA
- M. Kaluza
HIJ, Jena, Germany
- S. Karsch
LMU, Garching, Germany
- E. Khazanov, I. Kostyukov
IAP/RAS, Nizhny Novgorod, Russia
- D. Khikhlukha, D. Kocon, G. Korn, A.Y. Molodozhentsev, L. Pribyl
ELI-BEAMS, Prague, Czech Republic
- L. Labate, P. Tomassini
CNR/IPP, Pisa, Italy
- W. Leemans, C.B. Schroeder
LBNL, Berkeley, California, USA
- A. Lifschitz, V. Malka, F. Massimo
LOA, Palaiseau, France
- V. Litvinenko
BNL, Upton, Long Island, New York, USA
- V. Litvinenko
Stony Brook University, Stony Brook, USA
- W. Lu
TUB, Beijing, People's Republic of China
- V. Malka
Ecole Polytechnique, Palaiseau, France
- S. P. D. Mangles, Z. Najmudin, A. A. Sahai
Imperial College of Science and Technology, Department of Physics, London, United Kingdom
- A. Marocchino, A. Mostacci
University of Rome La Sapienza, Rome, Italy
- K. Masaki, Y. Sano
JAEA/Kansai, Kyoto, Japan
- U. Schramm
HZDR, Dresden, Germany
- M.J.V. Streeter, A.G.R. Thomas
Cockcroft Institute, Lancaster University, Lancaster, United Kingdom
- C. Szwaj
PhLAM/CERCLA, Villeneuve d'Ascq Cedex, France
- C.-G. Wahlstrom
Lund Institute of Technology (LTH), Lund University, Lund, Sweden
- R. Walczak
Oxford University, Physics Department, Oxford, Oxon, United Kingdom
- G.X. Xia
UMAN, Manchester, United Kingdom
- M. Yabashi
JASRI/SPring-8, Hyogo, Japan
- A. Zigler
The Hebrew University of Jerusalem, The Racah Institute of Physics, Jerusalem, Israel
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The Horizon 2020 Project EuPRAXIA ('European Plasma Research Accelerator with eXcellence In Applications') aims at producing a design report of a highly compact and cost-effective European facility with multi-GeV electron beams using plasma as the acceleration medium. The accelerator facility will be based on a laser and/or a beam driven plasma acceleration approach and will be used for photon science, high-energy physics (HEP) detector tests, and other applications such as compact X-ray sources for medical imaging or material processing. EuPRAXIA started in November 2015 and will deliver the design report in October 2019. EuPRAXIA aims to be included on the ESFRI roadmap in 2020.
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Slides TUOBB3 [9.269 MB]
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DOI • |
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※ https://doi.org/10.18429/JACoW-IPAC2017-TUOBB3
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TUPIK057 |
The Real-Time Waveform Mask Interlock System for the RF Gun Conditioning of the ELI-NP Gamma Beam System |
1822 |
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- S. Pioli, D. Alesini, A. Gallo, L. Piersanti
INFN/LNF, Frascati (Roma), Italy
- F. Cardelli, L. Palumbo
University of Rome La Sapienza, Rome, Italy
- D.T. Palmer
Istituto Nazionale di Fisica Nucleare, Milano, Italy
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The new Gamma Beam System (GBS), within the ELI-NP project, under installation in Magurele (RO) by INFN, as part of EuroGammas consortium, can provide gamma rays that open new possibilities for nuclear photonics and nuclear physics. ELI-GBS gamma rays are produced by Compton back-scattering to get monochromaticity (0,1% bandwidth), high flux (1013 photon/s the highest in the world), tunable directions and energies up to 19 MeV. Such gamma beam is obtained when a high-intensity laser collides a high-brightness electronbeam with energies up to 720 MeV. The RF-Gun, made with the novel clamping gasket technique, working in '-mode at 100 Hz with a max. RF input of 16 MW, RF peak field of 120 MV/m and filling time of 420 ns was fully tested and conditioned few month ago at ELSA. This paper will describe the real-time fast-interlock system based on waveform mask technique used during RF Gun conditioning in order to monitor on-line reflected RF signals for a faster pulse-to-pulse detection of breakdowns and to ensure the safety of Gun and modulator tripping such devices before next RF pulse.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK057
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TUPIK058 |
The Machine Protection System for the ELI-NP Gamma Beam System |
1824 |
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- S. Pioli, D. Alesini, D. Di Giovenale, G. Di Pirro, A. Gallo, L. Piersanti, A. Vannozzi, A. Variola
INFN/LNF, Frascati (Roma), Italy
- F. Cardelli, L. Palumbo
University of Rome La Sapienza, Rome, Italy
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The new Gamma Beam System (GBS), within the ELI-NP project, under installation in Magurele (RO) by INFN, as part of EuroGammas consortium, can provide gamma rays that open new possibilities for nuclear photonics and nuclear physics. ELI-GBS gamma rays are produced by Compton back-scattering to get monochromaticity (0,1% bandwidth), high flux (1013 photon/s the highest in the world), tunable directions and energies up to 19 MeV. Such gamma beam is obtained when a high-intensity laser collides a high-brightness electron beam with energies up to 720 MeV with a repetition rate of 100 Hz in multi-bunch mode with trains of 32 bunches. An advanced Machine Protection System was developed in order to ensure proper operation for this challenging facility. Such system operate on different layers of the control system to be interfaced with all sub-systems of the control system. It's equipped with different beam loss monitors based on Cherenkov optical fiber, hall probes, fast current transformer together with BPM and an embedded system based on FPGA with distributed I/O over EtherCAT to monitor vacuum and RF systems which requires fast response to be interlocked within the next RF pulse.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK058
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THOBB1 |
High Power Test Results of the Eli-NP S-Band Gun Fabricated with the New Clamping Technology Without Brazing |
3662 |
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- D. Alesini, A. Battisti, M. Bellaveglia, A. Falone, A. Gallo, V.L. Lollo, L. Pellegrino, S. Pioli, S. Tomassini, A. Variola
INFN/LNF, Frascati (Roma), Italy
- F. Cardelli, L. Palumbo
University of Rome La Sapienza, Rome, Italy
- L. Ficcadenti, V. Pettinacci
INFN-Roma, Roma, Italy
- D.T. Palmer
Istituto Nazionale di Fisica Nucleare, Milano, Italy
- L. Piersanti
INFN-Roma1, Rome, Italy
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High gradient RF photoguns have been a key development to enable several applications of high quality electron beams. They allow the generation of beams with very high peak current and low transverse emittance, satisfying the tight demands for free-electron lasers, energy recovery Linacs, Compton/Thomson Sources and high-energy linear colliders. A new fabrication technique for this type of structures has been recently developed and implemented at the Laboratories of the National Institute of Nuclear physics in Frascati (LNF-INFN, Italy). It is based on the use of special RF-vacuum gaskets that allow avoiding brazing in the realization process. The S-band gun of the Compton-based ELI-NP gamma beam system (GBS) has been fabricated with this new technique. It operates at 100 Hz with 120 MV/m cathode peak field and long RF pulses to allow the 32 bunch generation foreseen for the GBS. High gradient tests have been performed at full power full repetition rate and have shown the extremely good performances of the structure in term of breakdown rates. In the paper we report and discuss all experimental results with details of the electromagnetic design and mechanical realization processes.
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Slides THOBB1 [6.211 MB]
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※ https://doi.org/10.18429/JACoW-IPAC2017-THOBB1
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