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1. Particle physics at the European Spallation Source

Author

Abele, H., Alekou, A., Algora, A., Andersen, K., Baeßler, S., Barron-Pálos, L., Barrow, J., Baussan, E., Bentley, P., Berezhiani, Z., Beßler, Y., Bhattacharyya, A.K., Bianchi, A., Bijnens, J., Blanco, C., Kraljevic, N. Blaskovic, Blennow, M., Bodek, K., Bogomilov, M., Bohm, C., Bolling, B., Bouquerel, E., Brooijmans, G., Broussard, L.J., Buchan, O., Burgman, A., Calén, H., Carlile, C.J., Cederkall, J., Chanel, E., Christiansen, P., Cirigliano, V., Collar, J.I., Collins, M., Crawford, C.B., Morales, E. Cristaldo, Cupiał, P., D’Alessi, L., Damian, J.I. M., Danared, H., Dancila, D., de André, J.P.A.M., Delahaye, J.P., Degenkolb, S., Di Julio, D.D., Dracos, M., Dunne, K., Efthymiopoulos, I., Ekelöf, T., Eklund, L., Eshraqi, M., Esteban, I., Fanourakis, G., Farricker, A., Fernandez-Martinez, E., Ferreira, M.J., Fertl, M., Fierlinger, P., Folsom, B., Frank, A., Fratangelo, A., Friman-Gayer, U., Fukuda, T., Fynbo, H.O.U., Sosa, A. Garcia, Gazis, N., Gålnander, B., Geralis, Th., Ghosh, M., Gokbulut, G., Gomez-Cadenas, J.J., Gonzalez-Alonso, M., Gonzalez, F., Halić, L., Happe, C., Heil, P., Heinz, A., Herde, H., Holl, M., Jenke, T., Jenssen, M., Jericha, E., Johansson, H.T., Johansson, R., Johansson, T., Kamyshkov, Y., Topaksu, A. Kayis, Kildetoft, B., Kirch, K., Kliček, B., Klinkby, E., Kolevatov, R., Konrad, G., Kozioł, M., Krhač, K., Kupść, A., Łacny, Ł., Larizgoitia, L., Lewis, C.M., Lindroos, M., Lychagin, E., Lytken, E., Maiano, C., Marciniewski, P., Markaj, G., Märkisch, B., Marrelli, C., Martins, C., Meirose, B., Mezzetto, M., Milas, N., Milstead, D., Monrabal, F., Muhrer, G., Nepomuceno, A., Nesvizhevsky, V., Nilsson, T., Novella, P., Oglakci, M., Ohlsson, T., Olvegård, M., Oskarsson, A., Ota, T., Park, J., Patrzalek, D., Perrey, H., Persoz, M., Petkov, G., Piegsa, F.M., Pistillo, C., Poussot, P., Privitera, P., Rataj, B., Ries, D., Rizzi, N., Rosauro-Alcaraz, S., Rozpedzik, D., Saiang, D., Santoro, V., Schmidt, U., Schober, H., Schulthess, I., Silverstein, S., Simón, A., Sina, H., Snamina, J., Snow, W.M., Soldner, T., Stavropoulos, G., Stipčević, M., Szybiński, B., Takibayev, A., Tang, Z., Tarkeshian, R., Theroine, C., Thorne, J., Terranova, F., Thomas, J., Tolba, T., Torres-Sánchez, P., Trachanas, E., Tsenov, R., Uggerhøj, U.I., Vankova-Kirilova, G., Vassilopoulos, N., Wagner, R., Wang, X., Wildner, E., Wolke, M., Wurtz, J., Yiu, S.C., Yoon, S.G., Young, A.R., Zanini, L., Zejma, J., Zerzion, D., Zimmer, O., Zormpa, O., and Zou, Y.

Published
2023
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3. Bright muon beams and muon colliders

Author

Schulte, D., Palmer, M., Arndt, T., Chanc��, A., Delahaye, J.P., Faus-Golfe, A., Gilardoni, S., Lebrun, P., Long, K., M��tral, E., Pastrone, N., Quettier, L., Raubenheimer, T., Rogers, C., Seidel, M., Stratakis, D., and Yamamoto, A.

Subjects
Physics::Instrumentation and Detectors, Physics::Accelerator Physics, High Energy Physics::Experiment
Abstract

Muon collider (MC) technology must overcome several significant challenges to reach the maturity of electron-positron colliders. An increased level of R&D effort is justified at the current time, because the muon collider promises an alternative path toward high-energy, high-luminosity lepton collisions that extends beyond the expected reach of linear colliders. The strong suppression of synchrotron radiation compared to electrons allows beam acceleration in rings making efficient use of the RF systems for acceleration. The overall power consumption of a 10 TeV MC is expected to be lower than that of CLIC at 3 TeV. Additionally the beam can repeatedly produce luminosity in two detectors in the collider ring. The ratio of luminosity to beam power is expected to improve with collision energy, a unique feature of the MC. The compactness of the collider makes it plausible that a cost effective design might be achieved; however this must be verified with more detailed estimates. If the technical challenges can be overcome, the MC offers a potential route to long-term sustainability of collider physics., CERN Yellow Reports: Monographs, Vol. 1 (2022): European Strategy for Particle Physics - Accelerator R&D Roadmap

Published
2022
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4. Multi-gigaelectronvolt acceleration of positrons in a self-loaded plasma wakefield

Author

Corde, S., Adli, E., Allen, J.M., An, W., Clarke, C.I., Clayton, C.E., Delahaye, J.P., Frederico, J., Gessner, S., Green, S.Z., Hogan, M.J., Joshi, C., Lipkowitz, N., Litos, M., Lu, W., Marsh, K.A., Mori, W.B., Schmeltz, M., Vafaei-Najafabadi, N., Walz, D., Yakimenko, V., and Yocky, G.

Subjects
Colliders (Nuclear physics) -- Research, Electron accelerators -- Research, Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Electrical breakdown sets a limit on the kinetic energy that particles in a conventional radio-frequency accelerator can reach. New accelerator concepts must be developed to achieve higher energies and to make future particle colliders more compact and affordable. The plasma wakefield accelerator (PWFA) embodies one such concept, in which the electric field of a plasma wake excited by a bunch of charged particles (such as electrons) is used to accelerate a trailing bunch of particles. To apply plasma acceleration to electron-positron colliders, it is imperative that both the electrons and their antimatter counterpart, the positrons, are efficiently accelerated at high fields using plasmas (1). Although substantial progress has recently been reported on high-field, high-efficiency acceleration of electrons in a PWFA powered by an electron bunch (2), such an electron-driven wake is unsuitable for the acceleration and focusing of a positron bunch. Here we demonstrate a new regime of PWFAs where particles in the front of a single positron bunch transfer their energy to a substantial number of those in the rear of the same bunch by exciting a wakefield in the plasma. In the process, the accelerating field is altered--'self-loaded'--so that about a billion positrons gain five gigaelectronvolts of energy with a narrow energy spread over a distance of just 1.3 metres. They extract about 30 per cent of the wake's energy and form a spectrally distinct bunch with a root-mean-square energy spread as low as 1.8 per cent. This ability to transfer energy efficiently from the front to the rear within a single positron bunch makes the PWFA scheme very attractive as an energy booster to an electron-positron collider., Future high-energy particle colliders will operate at the frontier of particle physics, with particle energies in the range of several trillion electronvolts (3). Beyond the Large Hadron Collider (LHC) at [...]

Published
2015

5. European Strategy for Particle Physics -- Accelerator R&D Roadmap

Author

Adolphsen, C., Angal-Kalinin, D., Arndt, T., Arnold, M., Assmann, R., Auchmann, B., Aulenbacher, K., Ballarino, A., Baudouy, B., Baudrenghien, P., Benedikt, M., Bentvelsen, S., Blondel, A., Bogacz, A., Bossi, F., Bottura, L., Bousson, S., Brüning, O., Brinkmann, R., Bruker, M., Brunner, O., Burrows, P.N., Burt, G., Calatroni, S., Cassou, K., Castilla, A., Catalan-Lasheras, N., Cenni, E., Chancé, A., Colino, N., Corde, S., Corner, L., Cros, B., Cross, A., Delahaye, J.P., Devanz, G., Etienvre, A.-I., Evtushenko, P., Faus-Golfe, A., Fazilleau, P., Ferrario, M., Gallo, A., García-Tabarés, L., Geddes, C., Gerigk, F., Gianotti, F., Gilardoni, S., Grudiev, A., Gschwendtner, E., Hoffstaetter, G., Hogan, M., Hooker, S., Hutton, A., Ischebeck, R., Jakobs, K., Janot, P., Jensen, E., Kühn, J., Kaabi, W., Kayran, D., Klein, M., Knobloch, J., Koratzinos, M., Kuske, B., Lamont, M., Latina, A., Lebrun, P., Leemans, W., Li, D., Long, K., Longuevergne, D., Losito, R., Lu, W., Lucchesi, D., Lundh, O., Métral, E., Marhauser, F., Michizono, S., Militsyn, B., Mnich, J., Montesinos, E., Mounet, N., Muggli, P., Musumeci, P., Nagaitsev, S., Nakada, T., Neumann, A., Newbold, D., Nghiem, P., Noe, M., Oide, K., Osterhoff, J., Palmer, M., Pastrone, N., Pietralla, N., Prestemon, S., Previtali, E., Proslier, T., Quettier, L., Raubenheimer, T., Rimmer, B., Rivkin, L., Rochepault, E., Rogers, C., Rosaz, G., Roser, T., Rossi, L., Ruber, R., Schulte, D., Seidel, M., Senatore, C., Shepherd, B., Shi, J., Shipman, N., Specka, A., Stapnes, S., Stocchi, A., Stratakis, D., Syratchev, I., Tanaka, O., Tantawi, S., Tennant, C., Tsesmelis, E., Vaccarezza, C., Valente, A.-M., Védrine, P., Vieira, J., Vinokurov, N., Weise, H., Wenskat, M., Williams, P., Wing, M., Yamamoto, A., Yamamoto, Y., Yokoya, K., Zimmermann, F., Accelerator Science and Technology Centre (ASTEC), Daresbury Laboratory, European Organization for Nuclear Research (CERN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratori Nazionali di Frascati (LNF), Istituto Nazionale di Fisica Nucleare (INFN), 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), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), 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), and CERN

Subjects
[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Accelerators and Storage Rings, Particle Physics - Experiment
Abstract

CERN Yellow Rep. Monogr.ISBN 9789290836216 270 pages, 58 figures. Submitted for publication in the CERN Yellow Reports: Monographs series. Editor: N. Mounet. Panel editors: B. Baudouy (HFM), L. Bottura (HFM), S. Bousson (RF), G. Burt (RF), R. Assmann (plasma), E. Gschwendtner (plasma), R. Ischebeck (plasma), C. Rogers (muon), D. Schulte (muon), M. Klein (ERL); The 2020 update of the European Strategy for Particle Physics emphasised the importance of an intensified and well-coordinated programme of accelerator R&D, supporting the design and delivery of future particle accelerators in a timely, affordable and sustainable way. This report sets out a roadmap for European accelerator R&D for the next five to ten years, covering five topical areas identified in the Strategy update. The R&D objectives include: improvement of the performance and cost-performance of magnet and radio-frequency acceleration systems; investigations of the potential of laser / plasma acceleration and energy-recovery linac techniques; and development of new concepts for muon beams and muon colliders. The goal of the roadmap is to document the collective view of the field on the next steps for the R&D programme, and to provide the evidence base to support subsequent decisions on prioritisation, resourcing and implementation.

Published
2022

6. High-efficiency acceleration of an electron beam in a plasma wakefield accelerator

Author

Litos, M., Adli, E., An, W., Clarke, C.I., Clayton, C.E., Corde, S., Delahaye, J.P., England, R.J., Fisher, A.S., Frederico, J., Gessner, S., Green, S.Z., Hogan, M.J., Joshi, C., Lu, W., Marsh, K.A., Mori, W.B., Muggli, P., Najafabadi, N. Vafaei, Walz, D., White, G., Wu, Z., Yakimenko, V., and Yocky, G.

Subjects
Plasma accelerators -- Research, Electron beams -- Research, Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

High-efficiency acceleration of charged particle beams at high gradients of energy gain per unit length is necessary to achieve an affordable and compact high-energy collider. The plasma wakefield accelerator is one concept (1-3) being developed for this purpose. In plasma wakefield acceleration, a charge-density wake with high accelerating fields is driven by the passage of an ultra-relativistic bunch of charged particles (the drive bunch) through a plasma (4-6). If a second bunch of relativistic electrons (the trailing bunch) with sufficient charge follows in the wake of the drive bunch at an appropriate distance, it can be efficiently accelerated to high energy. Previous experiments using just a single 42-gigaelectronvolt drive bunch have accelerated electrons with a continuous energy spectrum and a maximum energy of up to 85 gigaelectronvolts from the tail of the same bunch in less than a metre of plasma (7). However, the total charge of these accelerated electrons was insufficient to extract a substantial amount of energy from the wake. Here we report high-efficiency acceleration of a discrete trailing bunch of electrons that contains sufficient charge to extract a substantial amount of energy from the high-gradient, nonlinear plasma wakefield accelerator. Specifically, we show the acceleration of about 74 picocoulombs of charge contained in the core of the trailing bunch in an accelerating gradient of about 4.4 gigavolts per metre. These core particles gain about 1.6 gigaelectronvolts of energy per particle, with a final energy spread as low as 0.7 per cent (2.0 per cent on average), and an energy-transfer efficiency from the wake to the bunch that can exceed 30 per cent (17.7 per cent on average). This acceleration of a distinct bunch of electrons containing a substantial charge and having a small energy spread with both a high accelerating gradient and a high energy-transfer efficiency represents a milestone in the development of plasma wakefield acceleration into a compact and affordable accelerator technology., The experiment reported here is carried out in the three-dimensional, nonlinear regime of plasma wakefield acceleration, also known as the blowout regime (8). In this regime, a tightly focused and [...]

Published
2014

8. ATF2 ultra-low IP betas proposal

Author

Tomas, R., Braun, H., Delahaye, J.P., Marn, E., Schulte, D., Zimmermann, F., Bambade, P., Renier, Y., Bai, S., Gao, J., Wang, D., Zhu, X.W., Honda, Y., Kuroda, S., Okugi, T., Tauchi, T., Terunuma, N., Urakawa, J., Seryi, A., White, G., Woodley, M., Angal-Kalinin, D., Jones, J., Scarfe, A., Starita, Sabine, European Organization for Nuclear Research (CERN), 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), Institute of High Energy Physics (IHEP), Chinese Academy of Sciences [Changchun Branch] (CAS), KEK (High energy accelerator research organization), SLAC National Accelerator Laboratory (SLAC), and Stanford University

Subjects
Technology for normal conducting higher energy linear accelerators [9], [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], Accelerators and Storage Rings, Hardware_LOGICDESIGN
Abstract

WE6PFP024; International audience; The CLIC Final Focus System has considerably larger chromaticity than those of ILC and its scaled test machine ATF2. We propose to reduce the IP betas of ATF2 to reach a CLIC-like chromaticity. This would also allow to study the FFS tuning difficulty as function of the IP beam spot size. Both the ILC and CLIC projects will largely benefit from the ATF2 experience at these ultra-low IP betas.

Published
2009

9. Exploring ultra-low β* values in ATF2 - R&D Programme proposal

Author

Angal-Kalinin, D., Bai, S., Bambade, P., Braun, H., Delahaye, J.P., Gao, J., Honda, Y., Jones, J., Kuroda, S., Okugi, T., Renier, Y., Scarfe, A., Schulte, D., Seryi, A., Tauchi, T., Tomás, R., Urakawa, J., Wang, D., White, G., Woodley, M., Zhu, X.W., Zimmermann, F., 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), Institute of High Energy Physics (IHEP), Chinese Academy of Sciences [Changchun Branch] (CAS), European Organization for Nuclear Research (CERN), KEK (High energy accelerator research organization), SLAC National Accelerator Laboratory (SLAC), and Stanford University

Subjects
[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
Abstract

We propose to explore the beam sizes and performance of the ATF2 Final Focus System for reduced IP beta functions up to a factor between 2 and 4 below its design. The results will demonstrate the feasibility of the system in a chromaticity regime of interest for CLIC and ILC.

Published
2008

10. The CLIC Study of a Multi-TeV Linear Collider.

Author

Delahaye, J.P.

Subjects
*LINEAR accelerators, *FEASIBILITY studies, *LARGE Hadron Collider, *NUCLEAR energy, *NUCLEAR facilities, *NUCLEAR physics
Abstract

This article reviews the status of the CLIC (Compact Linear Collider) study toward feasibility demonstration of a novel and challenging technology that has been specially developed to extend the energy reach of linear colliders into the multi-TeV range so that they will be complementary to the LHC (Large Hadron Collider). A conceptual design report is being prepared; it summarizes the performance of a high-energy facility based on this technology, as well as the results of the research and development carried out to address its feasibility. [ABSTRACT FROM AUTHOR]

Published
2012
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