1
|
Funkner S, Niehues G, Nasse MJ, Bründermann E, Caselle M, Kehrer B, Rota L, Schönfeldt P, Schuh M, Steffen B, Steinmann JL, Weber M, Müller AS. Revealing the dynamics of ultrarelativistic non-equilibrium many-electron systems with phase space tomography. Sci Rep 2023; 13:4618. [PMID: 36944670 PMCID: PMC10030633 DOI: 10.1038/s41598-023-31196-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 03/07/2023] [Indexed: 03/23/2023] Open
Abstract
The description of physical processes with many-particle systems is a key approach to the modeling of numerous physical systems. For example in storage rings, where ultrarelativistic particles are agglomerated in dense bunches, the modeling and measurement of their phase-space distribution is of paramount importance: at any time the phase-space distribution not only determines the complete space-time evolution but also provides fundamental performance characteristics for storage ring operation. Here, we demonstrate a non-destructive tomographic imaging technique for the 2D longitudinal phase-space distribution of ultrarelativistic electron bunches. For this purpose, we utilize a unique setup, which streams turn-by-turn near-field measurements of bunch profiles at MHz repetition rates. To demonstrate the feasibility of our method, we induce a non-equilibrium state and show that the phase-space distribution microstructuring as well as the phase-space distribution dynamics can be observed in great detail. Our approach offers a pathway to control ultrashort bunches and supports, as one example, the development of compact accelerators with low energy footprints.
Collapse
Affiliation(s)
- Stefan Funkner
- Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany.
| | - Gudrun Niehues
- Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | - Michael J Nasse
- Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | - Erik Bründermann
- Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | - Michele Caselle
- Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | - Benjamin Kehrer
- Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | - Lorenzo Rota
- Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Patrik Schönfeldt
- Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
- DLR (Deutsches Zentrum für Luft und Raumfahrt) Institute of Networked Energy Systems, Carl-von-Ossietzky-Str.15, 26129, Oldenburg, Germany
| | - Marcel Schuh
- Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | - Bernd Steffen
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | | | - Marc Weber
- Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | | |
Collapse
|
2
|
Honda Y, Shimada M, Aryshev A, Kato R, Miyajima T, Obina T, Takai R, Uchiyama T, Yamamoto N. Stimulated Excitation of an Optical Cavity by a Multibunch Electron Beam via Coherent-Diffraction-Radiation Process. PHYSICAL REVIEW LETTERS 2018; 121:184801. [PMID: 30444406 DOI: 10.1103/physrevlett.121.184801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Indexed: 06/09/2023]
Abstract
With a low emittance and short-bunch electron beam at a high repetition rate realized by a superconducting linac, stimulated excitation of an optical cavity at the terahertz spectrum range is shown. The electron beam passes through small holes in the cavity mirrors without being destroyed. A sharp resonance structure which indicates wideband stimulated emission via coherent diffraction radiation is observed while scanning the round-trip length of the cavity.
Collapse
Affiliation(s)
- Yosuke Honda
- High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Miho Shimada
- High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Alexander Aryshev
- High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Ryukou Kato
- High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Tsukasa Miyajima
- High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Takashi Obina
- High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Ryota Takai
- High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Takashi Uchiyama
- High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Naoto Yamamoto
- High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| |
Collapse
|
3
|
Roussel E, Evain C, Szwaj C, Bielawski S, Raasch J, Thoma P, Scheuring A, Hofherr M, Ilin K, Wünsch S, Siegel M, Hosaka M, Yamamoto N, Takashima Y, Zen H, Konomi T, Adachi M, Kimura S, Katoh M. Microbunching instability in relativistic electron bunches: direct observations of the microstructures using ultrafast YBCO detectors. PHYSICAL REVIEW LETTERS 2014; 113:094801. [PMID: 25215987 DOI: 10.1103/physrevlett.113.094801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Indexed: 06/03/2023]
Abstract
Relativistic electron bunches circulating in accelerators are subjected to a dynamical instability leading to microstructures at millimeter to centimeter scale. Although this is a well-known fact, direct experimental observations of the structures, or the field that they emit, remained up to now an open problem. Here, we report the direct, shot-by-shot, time-resolved recording of the shapes (including envelope and carrier) of the pulses of coherent synchrotron radiation that are emitted, and that are a "signature" of the electron bunch microstructure. The experiments are performed on the UVSOR-III storage ring, using electrical field sensitive YBa2Cu3O(7-x) thin-film ultrafast detectors. The observed patterns are subjected to permanent drifts, that can be explained from a reasoning in phase space, using macroparticle simulations.
Collapse
Affiliation(s)
- E Roussel
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Centre d'Études et de Recherches Lasers et Applications (CERLA), Université Lille 1, F-59655 Villeneuve d'Ascq Cedex, France
| | - C Evain
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Centre d'Études et de Recherches Lasers et Applications (CERLA), Université Lille 1, F-59655 Villeneuve d'Ascq Cedex, France
| | - C Szwaj
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Centre d'Études et de Recherches Lasers et Applications (CERLA), Université Lille 1, F-59655 Villeneuve d'Ascq Cedex, France
| | - S Bielawski
- Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR CNRS 8523, Centre d'Études et de Recherches Lasers et Applications (CERLA), Université Lille 1, F-59655 Villeneuve d'Ascq Cedex, France
| | - J Raasch
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - P Thoma
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - A Scheuring
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - M Hofherr
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - K Ilin
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - S Wünsch
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - M Siegel
- Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology (KIT), 76187 Karlsruhe, Germany
| | - M Hosaka
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - N Yamamoto
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Y Takashima
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - H Zen
- Institute of Advanced Energy, Kyoto University, Uji 611-0011, Japan
| | - T Konomi
- UVSOR Facility, Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| | - M Adachi
- UVSOR Facility, Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| | - S Kimura
- UVSOR Facility, Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| | - M Katoh
- UVSOR Facility, Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
| |
Collapse
|
4
|
Malik AK, Malik HK, Stroth U. Terahertz radiation generation by beating of two spatial-Gaussian lasers in the presence of a static magnetic field. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2012; 85:016401. [PMID: 22400682 DOI: 10.1103/physreve.85.016401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 09/02/2011] [Indexed: 05/31/2023]
Abstract
Resonant excitation of terahertz (THz) radiation based on beating of two spatial-Gaussian lasers having different frequencies and wave numbers but the same electric field amplitudes is proposed in a spatially periodic density plasma in the presence of a static magnetic field applied perpendicular to the direction of propagation of the lasers. In this process, the ponderomotive force is developed with its components parallel and perpendicular to the direction of propagation of the lasers. This leads to a nonlinear oscillatory current that resonantly excites the THz radiation with the frequency of the order of the upper hybrid frequency. The contribution of magnetic field, laser beamwidth, and amplitude and periodicity of the density ripples is discussed for the efficient THz radiation generation. With the optimization of these parameters, the efficiency on the order of 10(-3) or larger can be achieved in the present scheme.
Collapse
Affiliation(s)
- Anil K Malik
- Department of Physics, Plasma Waves and Particle Acceleration Laboratory, Indian Institute of Technology Delhi, New Delhi - 110 016, India
| | | | | |
Collapse
|