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1. Toward a plasma-based accelerator at high beam energy with high beam charge and high beam quality

Author

Gilles Maynard, Xiaojian Li, L. A. Gizzi, Anna Giribono, Massimo Ferrario, P. Lee, Ralph Assmann, F. Massimo, Bernhard Hidding, Andrea Rossi, Jiebei Zhu, Paolo Tomassini, A. Martinez de la Ossa, E. N. Svystun, Jorge Vieira, A. Beck, A. Chancé, Brigitte Cros, Cristina Vaccarezza, A. Ferran Pousa, T. Silva, Phu Anh Phi Nghiem, S. Romeo, Alberto Marocchino, Enrica Chiadroni, A. Mosnier, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratori Nazionali di Frascati (LNF), Istituto Nazionale di Fisica Nucleare (INFN), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Scienze Fisiche, Informatiche e Matematiche [Modena], Università degli Studi di Modena e Reggio Emilia = University of Modena and Reggio Emilia (UNIMORE), Guizhou Institute of Technology, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN), Centro de Fisica de Plasmas (GoLP), Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), State Key Lab of Estuarine and Coastal Research, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Università degli Studi di Modena e Reggio Emilia (UNIMORE)

Subjects
Physics and Astronomy (miscellaneous), Computer science, wake field [plasma], plasma: wake field, beam transport, 01 natural sciences, 7. Clean energy, law.invention, wake field [accelerator], particle: acceleration, accelerator: wake field, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], high [charge], beam: injection, QC, Surfaces and Interfaces, Particle acceleration, quality, plasma-based facility, plasma wakefield acceleration, high brightness beams, Laser beam quality, injection [beam], Nuclear and High Energy Physics, Plasma parameters, Acceleration, charge: high, 0103 physical sciences, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, ddc:530, Aerospace engineering, 010306 general physics, numerical calculations, 010308 nuclear & particles physics, business.industry, bibliography, Plasma, Plasma acceleration, Laser, sensitivity, beam loading, laser, lcsh:QC770-798, beam profile, business, Beam (structure), acceleration [particle]
Abstract

Physical review accelerators and beams 23(3), 031301 (2020). doi:10.1103/PhysRevAccelBeams.23.031301, From plasma-wakefield acceleration as a physics experiment toward a plasma-based accelerator as a user facility, the beam physics issues remaining to be solved are still numerous. Providing beams with high energy, charge, and quality simultaneously, not only within the plasma but also at the user doorstep itself, is the main concern. Despite its tremendous efficiency in particle acceleration, the wakefield displays a complex 3D profile which, associated to the beam-loading field induced by the accelerated beam itself, makes the acceleration of high charge to high energy often incompatible with high beam quality. Beam extraction from the plasma without quality degradation for a transfer either to the next plasma stage or to the user application is another difficulty to consider. This article presents the substantial studies carried out and the different innovative methods employed for tackling all these different issues. Efforts focused on achieving the challenging beam parameters targeted by the EuPRAXIA accelerator facility project. The lessons learned at the end of these in-depth simulations and optimizations are highlighted. The sensitivity to different error sources is also estimated to point out the critical components of such an accelerator. Finally, the needs in terms of laser and plasma parameters are provided., Published by American Physical Society, College Park, MD

Published
2020
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2. Report on the ECFA Early-Career Researchers Debate on the 2020 European Strategy Update for Particle Physics

Author

Bethani, A., Brondolin, E., Elliot, A. A., García Pardiñas, J., Gilles, G., Gouskos, L., Gouveia, E., Graverini, E., Hermansson-Truedsson, N., Irles, A., Jansen, H., Mankinen, K. H., Manoni, E., Mathad, A., Mcfayden, J., Queitsch-Maitland, M., Rembser, J., Reynolds, E. T. J., Schöfbeck, R., Schwendimann, P., Sekmen, S., Sznajder, P., Williams, S. L., Zanzi, D., Andari, N., Apolinário, L., Augsten, K., Bakos, E., Bellafont, I., Beresford, L., Beyer, J., Bianchini, L., Bierlich, C., Bilin, B., Bjørke, K. L., Bols, E., Brás, P. A., Brenner, L., Calvo, P., Capdevila, B., Cioara, I., Cojocariu, L. N., Collamati, F., Wit, A., Dordei, F., Dordevic, M., Du Pree, T. A., Dufour, L., Dziurda, A., Einhaus, U., Esen, S., Ferradas Troitino, J., Franco, C., García Alonso, A., Ghosh, A., Giribono, A., Heikkilä, J. K., Heracleous, H. N., Herman, T., Hrtánková, J., Hussain, P. S., Kalaczynski, P., Karancsi, J., Kontaxakis, P., Kostoglou, S., Koulouris, A., Koval, M., Krizkova Gajdosova, K., Krzysiak, J. A., Kuich, M., Lantwin, O., Lasagni Manghi, F., Lechner, L., Leontsinis, S., Lieret, K., Lobanov, A., Lorenz, J. M., Luparello, G., Lurkin, N., Mantani, L., Marchevski, R., Marin Benito, C., Milenovic, P., Milosevic, V., Dominik Stefan Mitzel, Moravcová, Z., Moureaux, L., Mullier, G. A., Nelson, M. E., Ngadiuba, J., Nikiforou, N., Okeefe, M. W., Pedro, R., Pekkanen, J., Ramos, M. P. L. P., Rasmussen, C. Ø., Sas, M., Schenk, M., Shchelina, K., Shopova, M., Spannagel, S., Sputowska, I. A., Staszewski, R., Takacs, A., Tenorth, V. T., Thomas, L., Torre, R., Trovato, F., Valente, M., Haevermaet, H., Vanek, J., Verstraeten, M., Verwilligen, P., Verzetti, M., Vislavicius, V., Vormwald, B., Vourliotis, E., Walder, J., Wiglesworth, C., Zaborowska, A., Zivkovic, L., Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), École polytechnique (X), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and HEP, INSPIRE

Subjects
[PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], detector: technology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), CERN Lab, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], accelerator, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, programming, High Energy Physics - Experiment
Abstract

A group of Early-Career Researchers (ECRs) has been given a mandate from the European Committee for Future Accelerators (ECFA) to debate the topics of the current European Strategy Update (ESU) for Particle Physics and to summarise the outcome in a brief document [1]. A full-day debate with 180 delegates was held at CERN, followed by a survey collecting quantitative input. During the debate, the ECRs discussed future colliders in terms of the physics prospects, their implications for accelerator and detector technology as well as computing and software. The discussion was organised into several topic areas. From these areas two common themes were particularly highlighted by the ECRs: sociological and human aspects; and issues of the environmental impact and sustainability of our research., Editors: A. Bethani, E. Brondolin, A. A. Elliot, J. Garc\'ia Pardi\~nas, G. Gilles, L. Gouskos, E. Gouveia, E. Graverini, N. Hermansson-Truedsson, A. Irles, H. Jansen, K. H. Mankinen, E. Manoni, A. Mathad, J. McFayden, M. Queitsch-Maitland, J. Rembser, E. T. J. Reynolds, R. Sch\"ofbeck, P. Schwendimann, S. Sekmen, P. Sznajder, S. L. Williams, D. Zanzi

Published
2020

3. Photoemission studies of yttrium photocathodes by using the visible radiation

Author

A. Lorusso, M. B. Danailov, Massimo Ferrario, Sultan B. Dabagov, J. Scifo, Enrica Chiadroni, Paolo Cinquegrana, A. Perrone, D. Garzella, Dariush Hampai, M. Trovo, Alexander Demidovich, Anna Giribono, Laboratoire Interactions, Dynamiques et Lasers (ex SPAM) (LIDyl), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Materials science, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], high brightness photoinjectors, chemistry.chemical_element, 01 natural sciences, Photocathode, law.invention, Pulsed laser deposition, law, 0103 physical sciences, Thermal emittance, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Thin film, 010306 general physics, Particle-Beam Sources, 010308 nuclear & particles physics, business.industry, photoemission, two-photon emission, Surfaces and Interfaces, Yttrium, Photoelectric effect, Laser, chemistry, Physics::Accelerator Physics, Optoelectronics, lcsh:QC770-798, Quantum efficiency, business
Abstract

The present work reports on Yttrium based photocathodes. A Yttrium (Y) thin film is deposited via pulsed laser deposition (PLD) on the copper (Cu) back flange of a radio frequency (rf) gun for photocathode application. Because of a lower work function with respect to Cu, Y photocathodes are particularly appealing for the possibility to illuminate them with visible laser pulses, with the advantage of a higher energy per pulse, paving the way to high repetition rate photoinjectors, driven by conventional laser sources. In addition, working at $\ensuremath{\lambda}\ensuremath{\sim}400\text{ }\text{ }\mathrm{nm}$ the small energy difference between the Y work function (about 3 eV) and the laser photon energy reduces the contribution of the intrinsic emittance of the material. Photoelectrons, emitted by the thin film Y photocathode driven by the second harmonic of a Ti:Sapphire laser, have been characterized in terms of quantum efficiency and transverse emittance. Results have been compared with the theoretical ones obtained by the three-step model of Spicer for metallic photocathodes.

Published
2020
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4. Status of the CompactLight Design Study

Author

D'Auria, Gerardo, Aicheler, Markus, Aksoy, Avni, Alesini, David, Apsimon, Robert, Arnesano, Jordan Matias, Bellaveglia, Marco, Bernhard, Axel, Bosco, Fabio, Buonomo, Bruno, Burt, Graeme, Calvi, Marco, Cardelli, Fabio, Castañeda Cortés, Hector Mauricio, Castilla, Alejandro, Clarke, James, Croia, Michele, Cross, Adrian, Dattoli, Giuseppe, Di Mitri, Simone, Diomede, Marco, Dowd, Rohan, Dunning, David, Esperante Pereira, Daniel, Fang, Wencheng, Faus-Golfe, Angeles, Ferrario, Massimo, Ficcadenti, Luca, Fuster, Juan, Gallo, Alessandro, Gazis, Evangelos, Gazis, Nikolaos, Geometrante, Raffaella, Gethmann, Julian, Gimeno, Benito, Giribono, Anna, Gonzalez-Iglesias, Daniel, Goryashko, Vitaliy, Han, Yanliang, Hoekstra, Ronnie, Jacewicz, Marek, Janssen, Xander, Kokole, Mirko, Latina, Andrea, Liu, Xingguang, Luiten, Jom, Marcos, Jordi, Marín, Eduardo, Mostacci, Andrea, Mutsaers, Peter, Muñoz Horta, Raquel, Nergiz, Zafer, Nguyen, Federico, Nix, Laurence, Palumbo, Luigi, Pérez, Francis, Petralia, Alberto, Piersanti, Luca, Priem, Johannes, Rochow, Regina, Rossi, Carlo, Ruber, Roger, Schmidt, Thomas, Schulte, Daniel, Scifo, Jessica, Spataro, Bruno, Stapnes, Steinar, Stragier, Xavier, Tanke, Eugene, Taylor, Geoffrey, Thompson, Neil, Trachnas, Emmanuil, Vaccarezza, Cristina, Wu, Xiaowei, Wuensch, Walter, Zhang, Kai, Zhang, Liang, Zhu, Dajun, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Helsinki Institute of Physics, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
electron, Third parties, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], European union, Free electron lasers, Electrons, 01 natural sciences, 7. Clean energy, 114 Physical sciences, Design studies, Potential users, Accelerator Physics, Short periods, High gradient, Wigglers, 0103 physical sciences, Free Electron Lasers, Wigglers, X-Ray Laser, Status of Projects and Facilities, linac, 010306 general physics, undulator, Accelerating structure, 010302 applied physics, FEL, X rays, Accelerators and Storage Rings, gun, X-Ray Laser, International collaborations, International cooperation
Abstract

CompactLight (XLS) is an International Collaboration of 24 partners and 5 third parties, funded by the European Union through the Horizon 2020 Research and Innovation Programme. The main goal of the project, which started in January 2018 with a duration of 36 months, is the design of an hard X-ray FEL facility beyond today’s state of the art, using the latest concepts for bright electron photo-injectors, high-gradient accelerating structures, and innovative short-period undulators. The specifications of the facility and the parameters of the future FEL are driven by the demands of potential users and the associated science cases. In this paper we will give an overview on the ongoing activities and the major results achieved until now., Proceedings of the 39th Free Electron Laser Conference, FEL2019, Hamburg, Germany

Published
2019
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5. Positron driven muon source for a muon collider

Author

Alesini, D., Antonelli, M., Biagini, M. E., Boscolo, M., Blanco-García, O. R., Ciarma, A., Cimino, R., Iafrati, M., Giribono, A., Guiducci, S., Pellegrino, L., Rotondo, M., Vaccarezza, C., Variola, A., Allegrucci, A., Anulli, F., Bauce, M., Collamati, F., Cavoto, G., Cesarini, G., Iacoangeli, F., Li Voti, R., Bacci, A., Drebot, I., Raimondi, P., Liuzzo, S., Chaikovska, I., Chehab, R., Amapane, N., Bartosik, N., Bino, C., Alessandra Cappati, Cotto, G., Pastrone, N., Pelliccioni, M., Sans Planell, O., Casarza, M., Vallazza, E., Ballerini, G., Brizzolari, C., Mascagna, V., Prest, M., Soldani, A., Bertolin, A., Curatolo, C., Gonella, F., Lorenzon, A., Lucchesi, D., Morandin, M., Pazzini, J., Rossin, R., Sestini, L., Ventura, S., Zanetti, M., Carra, F., Sievers, P., Keller, L., Peroni, L., Scapin, M., European Synchrotron Radiation Facility (ESRF), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Accelerator Physics (physics.acc-ph), Physics::Instrumentation and Detectors, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], FOS: Physical sciences, beam transport, High Energy Physics - Experiment, target, High Energy Physics - Experiment (hep-ex), muon, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], muon: particle source, accelerator: design, activity report, physics.acc-ph, beam optics: design, hep-ex, muon: beam, Accelerators and Storage Rings, accumulator, positron: beam, muon: pair production, beam emittance, Physics::Accelerator Physics, Physics - Accelerator Physics, High Energy Physics::Experiment, Particle Physics - Experiment, acceptance
Abstract

The design of a future multi-TeV muon collider needs new ideas to overcome the technological challenges related to muon production, cooling, accumulation and acceleration. In this paper a layout of a positron driven muon source known as the Low EMittance Muon Accelerator (LEMMA) concept is presented. The positron beam, stored in a ring with high energy acceptance and low emittance, is extracted and driven to a multi-target system, to produce muon pairs at threshold. This solution alleviates the issues related to the power deposited and the integrated Peak Energy Density Deposition (PEDD) on the targets. Muons produced in the multi-target system will then be accumulated before acceleration and injection in the collider. A multi-target line lattice has been designed to cope with the focusing of both the positron and muon beams. Studies on the number, material and thickness of the targets have been carried out. A general layout of the overall scheme and a description is presented, as well as plans for future R&D., 18 pages, 32 figures

Published
2019

6. Positron Driven Muon Source for a Muon Collider: Recent Developments

Author

Biagini, Maria, Antonelli, Mario, Bacci, Alberto, Bauce, Matteo, Blanco-García, Oscar, Boscolo, Manuela, Cesarini, Gianmario, Chaikovska, Iryna, Chehab, Robert, Ciarma, Andrea, Collamati, Francesco, Giribono, Anna, Guiducci, Susanna, Liuzzo, Simone, Lucchesi, Donatella, Pastrone, Nadia, Raimondi, Pantaleo, Vaccarezza, Cristina, Variola, Alessandro, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), European Synchrotron Radiation Facility (ESRF), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
low emittance, damping, emittance, MC1: Circular and Linear Colliders, Physics::Instrumentation and Detectors, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], muon collider, muon production, muon: storage ring, 7. Clean energy, Accelerator Physics, positron: beam, target, beam emittance: low, Physics::Accelerator Physics, positron, High Energy Physics::Experiment, muon: particle source, collider, positron: storage ring, muon: accelerator, acceptance
Abstract

The design of a future multi-TeV muon collider needs new ideas to overcome the technological challenges related to muon production, cooling, accumulation and acceleration. The Low Emittance Muon Accelerator (LEMMA) concept *,** presents in this paper an upgraded layout of a positron driven muon source. The positron beam, stored in a ring with high energy acceptance and low emittance, is extracted and driven in a push-pull configuration to a multi-target system, to produce muon pairs at threshold on the target’s electrons. This solution alleviates the issues related to the power deposited and the integrated Peak Energy Density Deposition on the targets. Muons produced in the multi-target system will then be accumulated in many parallel rings before acceleration and injection in the collider. A special multi-target line lattice has been designed to cope with the focusing of both the positron and muon beams. Studies on the number, material and thickness of the targets have been carried out. A general layout of the overall scheme and a description is presented, as well as plans for future R, Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia

Published
2019
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7. CompactLight design study

Author

D'Auria, Gerardo, Aicheler, Markus, Aksoy, Avni, Alesini, David, Apsimon, Robert, Arnesano, Jordan Matias, Bellaveglia, Marco, Bernhard, Axel, Bosco, Fabio, Buonomo, Bruno, Burt, Graeme, Calvi, Marco, Cardelli, Fabio, Castaneda Cortes, Hector Mauricio, Castilla, Alejandro, Clarke, James, Croia, Michele, Cross, Adrian, Dattoli, Giuseppe, Di Mitri, Simone, Diomede, Marco, Dowd, Rohan, Dunning, David, Fang, WenDing, Faus-Golfe, Angeles, Ferrario, Massimo, Ficcadenti, Luca, Gallo, Alessandro, Gazis, Evangelos, Gazis, Nikolaos, Geometrante, Raffaella, Gethmann, Julian, Giribono, Anna, Goryashko, Vitaliy, Han, Yanliang, Jacewicz, Marek, Janssen, Xander, Kokole, Mirko, Latina, Andrea, Liu, Xingguang, Luiten, Jom, Marcos, Jordi, Marín, Eduardo, Mostacci, Andrea, Mutsaers, Peter, Muñoz Horta, Raquel, Nguyen, Federico, Palumbo, Luigi, Pérez, Francis, Petralia, Alberto, Piersanti, Luca, Priem, Johannes, Rochow, Regina, Rossi, Carlo, Ruber, Roger, Schmidt, Thomas, Schulte, Daniel, Spataro, Bruno, Stapnes, Steinar, Stragier, Xavier, Taylor, Geoffrey, Thompson, Neil, Vaccarezza, Cristina, Wu, Xiaowei, Wuensch, Walter, Zhang, Kai, Zhang, Liang, Zhu, Dajun, Tanke, E., Trachanas, E., Negris, Z., Esperante, D., Fuster, J., Gimeno, B., Gonzalez-Iglesias, D., Hoekstra, R., Nix, L., and Centre National de la Recherche Scientifique (CNRS)

Subjects
electron, FEL, Technology, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], brightness, linac, Accelerators and Storage Rings, ddc:600, undulator
Abstract

International audience; The H2020 CompactLight Project aims at designing the next generation of compact X-rays Free-Electron Lasers, relying on very high gradient accelerating structures (X-band, 12 GHz), the most advanced concepts for high brightness electron photo injectors, and innovative compact short-period undulators. Compared to existing facilities, the proposed facility will benefit from a lower electron beam energy, due to the enhanced undulators performance, and will be significantly more compact, with a smaller footprint, as a consequence of the lower energy and the high-gradient X-band structures. In addition, the whole infrastructure will also have a lower electrical power demand as well as lower construction and running costs.

Published
2019
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8. EuPRAXIA, a Step Toward a Plasma-Wakefield Based Accelerator With High Beam Quality

Author

T. L. Audet, P. Lee, D. R. Symes, J. A. Clarke, Vladimir Shpakov, M. Croia, Gilles Maynard, A. Aschikhin, A. Ferran Pousa, Feiyu Li, R. Pattathil, Zulfikar Najmudin, A. Martinez de la Ossa, D. Alesini, Konstantin Kruchinin, Vladyslav Libov, Simon M. Hooker, Carsten Welsch, A Specka, F. Mathieu, Jun Zhu, A. Y. Molodozhentsev, T. Silva, F. Massimo, Brigitte Cros, Massimo Ferrario, X. Li, M Vujanovic, Bernhard Hidding, Ricardo Fonseca, Paolo Tomassini, M. E. Couprie, Ulrich Dorda, Giuseppe Dattoli, Amin Ghaith, Angelo Stella, Davide Terzani, E. N. Svystun, L. Labate, Ralph Assmann, Suming Weng, A. Helm, Alessandro Cianchi, Samuel R. Yoffe, L. O. Silva, Nicolas Delerue, P. A. Walker, Maria Weikum, P. Niknejadi, Federico Nguyen, Cristina Vaccarezza, A. Del Dotto, S. Romeo, A. Chancé, Enrica Chiadroni, Daniel Marx, L. A. Gizzi, Guido Toci, J. Wolfenden, Timon Mehrling, Alessandro Rossi, Jorge Vieira, Zheng-Ming Sheng, Riccardo Pompili, Sally Wiggins, Lucas Schaper, A. Mosnier, Anna Giribono, Zeudi Mazzotta, Dino A. Jaroszynski, C. Simon, M. J. V. Streeter, Barbara Marchetti, M. Ibison, Phu Anh Phi Nghiem, Andrea Mostacci, Min Chen, A. Beck, D. Oumbarek Espinos, Roman Walczak, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), EuPRAXIA, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Key Laboratory of Virtual Geographic Environment, Ministry of Education of the People’s Republic of China, Nanjing Normal University, Nanjing China, Italian National agency for new technologies, Energy and sustainable economic development [Frascati] (ENEA), Environmental and Geophysical Sciences Lab (ENGEOS Lab), Khalifa University, Istituto Nazionale di Ottica (INO), and National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)

Subjects
History, Low emittance, Plasma parameters, Plasmas, accelerators, diagnostics, media_common.quotation_subject, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Laser particle acceleration, 7. Clean energy, 01 natural sciences, Education, Acceleration, accelerators, 0103 physical sciences, Electronic engineering, diagnostics, ddc:530, Thermal emittance, Quality (business), 010306 general physics, QC, plasma, media_common, emittance, 010308 nuclear & particles physics, European research, Plasma, acceleration, Computer Science Applications, laser, injection, Plasmas, Laser beam quality
Abstract

International audience; 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.

Published
2019
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9. Progress of the Development of the ELI-NP GBS High Level Applications

Author

Luigi Palumbo, Pasquale Arpaia, Cristina Vaccarezza, G. Campogiani, Anna Giribono, Andrea Mostacci, Giulio Gaio, Antonio Falone, Luca Sabato, S. Di Mitri, G. Di Pirro, I. Chaikovska, J. Corbett, S. Pioli, Alessandro Variola, Susanna Guiducci, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Campogiani, G., Giribono, A., Pioli, S., Mostacci, A., Palumbo, L., Guiducci, S., Di Pirro, G., Falone, A., Vaccarezza, C., Variola, A., Di Mitri, S., Gaio, G., Corbett, J., Sabato, L., Arpaia, P., and Chaikovska, I.

Subjects
Accelerator Physics (physics.acc-ph), Nuclear and High Energy Physics, Brightness, Beam dynamics, Photon, Extreme Light Infrastructure, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], High level applications, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, Linear particle accelerator, Compact high gradient accelerators, 010305 fluids & plasmas, law.invention, Nuclear physics, ELI-NP, Compton backscattering, LINAC, Instrumentation, law, 0103 physical sciences, Spectral purity, Physics, 010308 nuclear & particles physics, business.industry, High level application, Beam dynamic, Laser, Physics::Accelerator Physics, Physics - Accelerator Physics, Photonics, Compact high gradient accelerator, business, Fermi Gamma-ray Space Telescope
Abstract

The Gamma Beam System (GBS) is a high brightness LINAC to be installed in Magurele (Bucharest) at the new ELI-NP (Extreme Light Infrastructure — Nuclear Physics) laboratory. The accelerated electrons, with energies ranging from 280 to 720 MeV, will collide with a high power laser to produce tunable high energy photons (0.2–20 MeV ) with high intensity ( 1 0 13 photons/s), high brilliance and spectral purity ( 0 . 1 % BW), through the Compton backscattering process. This light source will be open to users for nuclear photonics and nuclear physics advanced experiments. Tested high level applications will play an important role in commissioning and operation. In this paper we report the progress and status of the development of dedicated high level applications. We also present the results of the test on the FERMI LINAC of the electron trajectory control method based on Dispersion Free Steering.

Published
2017
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10. Signatures of the Self-Similar Regime of Strongly Coupled Stimulated Brillouin Scattering for Efficient Short Laser Pulse Amplification

Author

A. Castan, Julien Fuchs, Anna Giribono, Caterina Riconda, Stefan Weber, L. Lancia, J.-R. Marquès, M. Chiaramello, L. Vassura, A. Chatelain, Mark N. Quinn, Adam Frank, T. Gangolf, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des interfaces et des couches minces [Palaiseau] (LPICM), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), and École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)

Subjects
General Physics and Astronomy, Physics::Optics, 01 natural sciences, Power law, 010305 fluids & plasmas, law.invention, symbols.namesake, Physics and Astronomy (all), Optics, Brillouin scattering, law, Physics::Plasma Physics, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, 010306 general physics, ComputingMilieux_MISCELLANEOUS, Physics, Strongly coupled, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Plasma, Laser, Pulse (physics), Amplitude, symbols, business, Raman scattering
Abstract

Plasma-based laser amplification is considered as a possible way to overcome the technological limits of\ud present day laser systems and achieve exawatt laser pulses. Efficient amplification of a picosecond laser\ud pulse by stimulated Brillouin scattering (SBS) of a pump pulse in a plasma requires to reach the self-similar\ud regime of the strongly coupled (SC) SBS. In this Letter, we report on the first observation of the signatures\ud of the transition from linear to self-similar regimes of SC-SBS, so far only predicted by theory and\ud simulations. With a new fully head-on collision geometry, subpicosecond pulses are amplified by a factor\ud of 5 with energy transfers of few tens of mJ. We observe pulse shortening, frequency spectrum broadening,\ud and down-shifting for increasing gain, signatures of SC-SBS amplification entering the self-similar regime.\ud This is also confirmed by the power law dependence of the gain on the amplification length: doubling the\ud interaction length increases the gain by a factor 1.4. Pump backward Raman scattering (BRS) on SC-SBS\ud amplification has been measured for the first time, showing a strong decrease of the BRS amplitude and\ud frequency bandwidth when SBS seed amplification occurs.\ud

Published
2016
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11. Delivery Status of the ELI-NP Gamma Beam System

Author

Cassou, K., Zomer, F., Tomassini, S., Alesini, D., Battisti, A., Boni, R., Cioeta, F., Piane, A. Delle, Pasquale, E. Di, Pirro, G. Di, Falone, A., Gallo, A., Lollo, V.L., Mostacci, A., Pioli, S., Ricci, R., Rotundo, U., Stella, A., Vaccarezza, C., Vannozzi, A., Variola, A., Bacci, A., Palmer, D.T., Serafini, L., Bliss, N., Cardelli, F., S.C.p.A., G. D'Auria Elettra-Sincrotrone Trieste, Giribono, Italy A., Pettinacci, V., Palumbo, L., Piersanti, L., Starita, Sabine, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and ELI-NP

Subjects
[PHYS]Physics [physics], [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], [PHYS.PHYS.PHYS-ACC-PH] Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], [PHYS] Physics [physics]
Abstract

International audience; The ELI-NP GBS is a high intensity and monochromatic gamma source under construction in Magurele (Romania). The design and construction of the Gamma Beam System complex as well as the integration of the technical plants and the commissioning of the overall facility, was awarded to the Eurogammas Consortium in March 2014. The delivery of the facility has been planned in for 4 stages and the first one was fulfilled in October 31st 2015. The engineering aspects related to the delivery stage 1 are presented.

Published
2016

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