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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.
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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
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2
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Grigoryan L, Mkrtchyan A, Dabagov S, Saharian A, Kocharyan V, Kotanjyan V, Harutyunyan H, Khachatryan H. Coherent radiation from a chain of charged particles on a circular orbit around a dielectric ball. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2023.110791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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3
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Abstract
Coherent synchrotron radiation from an electron storage ring is observed in the THz spectral range when the bunch length is shortened down to the sub-mm-range. With increasing stored current, the bunch becomes longitudinally unstable and modulates the THz emission in the time domain. These micro-instabilities are investigated at the electron storage ring BESSY II by means of cross-correlation of the THz fields from successive bunches. The investigations allow deriving the longitudinal length scale of the micro bunch fluctuations and show that it grows faster than the current-dependent bunch length. Our findings will help to set the limits for the possible time resolution for pump-probe experiments achieved with coherent THz synchrotron radiation from a storage ring.
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4
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Evain C, Roussel E, Le Parquier M, Szwaj C, Tordeux MA, Brubach JB, Manceron L, Roy P, Bielawski S. Direct Observation of Spatiotemporal Dynamics of Short Electron Bunches in Storage Rings. PHYSICAL REVIEW LETTERS 2017; 118:054801. [PMID: 28211708 DOI: 10.1103/physrevlett.118.054801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 05/23/2023]
Abstract
In recent synchrotron radiation facilities, the use of short (picosecond) electron bunches is a powerful method for producing giant pulses of terahertz coherent synchrotron radiation. Here we report on the first direct observation of these pulse shapes with a few picoseconds resolution, and of their dynamics over a long time. We thus confirm in a very direct way the theories predicting an interplay between two physical processes. Below a critical bunch charge, we observe a train of identical THz pulses (a broadband Terahertz comb) stemming from the shortness of the electron bunches. Above this threshold, a large part of the emission is dominated by drifting structures, which appear through spontaneous self-organization. These challenging single-shot THz recordings are made possible by using a recently developed photonic time stretch detector with a high sensitivity. The experiment has been realized at the SOLEIL storage ring.
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Affiliation(s)
- C Evain
- Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523 Centre d'Études et de Recherches Lasers et Applications, FR CNRS 2416, Université des Sciences et Technologies de Lille, F-59655 Villeneuve d'Ascq Cedex, France
| | - E Roussel
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163,5 in AREA Science Park,34149 Basovizza, Trieste, Italy
| | - M Le Parquier
- Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523 Centre d'Études et de Recherches Lasers et Applications, FR CNRS 2416, Université des Sciences et Technologies de Lille, F-59655 Villeneuve d'Ascq Cedex, France
| | - C Szwaj
- Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523 Centre d'Études et de Recherches Lasers et Applications, FR CNRS 2416, Université des Sciences et Technologies de Lille, F-59655 Villeneuve d'Ascq Cedex, France
| | - M-A Tordeux
- Synchrotron SOLEIL, Saint Aubin, BP 34, 91192 Gif-sur-Yvette, France
| | - J-B Brubach
- Synchrotron SOLEIL, Saint Aubin, BP 34, 91192 Gif-sur-Yvette, France
| | - L Manceron
- Synchrotron SOLEIL, Saint Aubin, BP 34, 91192 Gif-sur-Yvette, France
| | - P Roy
- Synchrotron SOLEIL, Saint Aubin, BP 34, 91192 Gif-sur-Yvette, France
| | - S Bielawski
- Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523 Centre d'Études et de Recherches Lasers et Applications, FR CNRS 2416, Université des Sciences et Technologies de Lille, F-59655 Villeneuve d'Ascq Cedex, France
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5
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Barros J, Evain C, Manceron L, Brubach JB, Tordeux MA, Brunelle P, Nadolski L, Loulergue A, Couprie ME, Bielawski S, Szwaj C, Roy P. Coherent synchrotron radiation for broadband terahertz spectroscopy. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2013; 84:033102. [PMID: 23556802 DOI: 10.1063/1.4793558] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We present the first high resolution (10(-3) cm(-1)) interferometric measurements in the 200-750 GHz range using coherent synchrotron radiation, achieved with a low momentum compaction factor. The effect of microbunching on spectra is shown, depending on the bunch current. A high signal-to-noise ratio is reached thanks to an artifact correction system based on a double detection scheme. Combined to the broad emitted spectral range and high flux (up to 10(5) times the incoherent radiation), this study demonstrates that coherent synchrotron radiation can now be used for stability-demanding applications, such as gas-phase studies of unstable molecules.
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Affiliation(s)
- J Barros
- Synchrotron SOLEIL, Saint Aubin, BP 48, 91192 Gif-sur-Yvette, Cedex, France
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6
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Abstract
Infrared radiation from the near- to the far-infrared (terahertz) region of the electromagnetic spectrum is extensively used for many different purposes. Accelerator-based sources of infrared and terahertz radiation have become well-accepted research tools. This article introduces the physics processes underlying the generation of infrared radiation by different methods. Special emphasis is put on the interesting properties of coherent radiation, and the corresponding accelerator requirements are discussed. Finally, the various available accelerator-based sources are compared in view of different figures of merit.
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Affiliation(s)
- Anke-Susanne Müller
- Institute for Synchrotron Radiation and Laboratory for the Application of Synchrotron Radiation, Karlsruhe Institute of Technology, Kaiserstrasse 12, 76131 Karlsruhe, Germany
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Biological applications of synchrotron radiation infrared spectromicroscopy. Biotechnol Adv 2012; 30:1390-404. [PMID: 22401782 DOI: 10.1016/j.biotechadv.2012.02.012] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Accepted: 02/20/2012] [Indexed: 11/24/2022]
Abstract
Extremely brilliant infrared (IR) beams provided by synchrotron radiation sources are now routinely used in many facilities with available commercial spectrometers coupled to IR microscopes. Using these intense non-thermal sources, a brilliance two or three order of magnitude higher than a conventional source is achievable through small pinholes (<10 μm) with a high signal to-noise ratio. IR spectroscopy is a powerful technique to investigate biological systems and offers many new imaging opportunities. The field of infrared biological imaging covers a wide range of fundamental issues and applied researches such as cell imaging or tissue imaging. Molecular maps with a spatial resolution down to the diffraction limit may be now obtained with a synchrotron radiation IR source also on thick samples. Moreover, changes of the protein structure are detectable in an IR spectrum and cellular molecular markers can be identified and used to recognize a pathological status of a tissue. Molecular structure and functions are strongly correlated and this aspect is particularly relevant for imaging. We will show that the brilliance of synchrotron radiation IR sources may enhance the sensitivity of a molecular signal obtained from small biosamples, e.g., a single cell, containing extremely small amounts of organic matter. We will also show that SR IR sources allow to study chemical composition and to identify the distribution of organic molecules in cells at submicron resolution is possible with a high signal-to-noise ratio. Moreover, the recent availability of two-dimensional IR detectors promises to push forward imaging capabilities in the time domain. Indeed, with a high current synchrotron radiation facility and a Focal Plane Array the chemical imaging of individual cells can be obtained in a few minutes. Within this framework important results are expected in the next years using synchrotron radiation and Free Electron Laser (FEL) sources for spectro-microscopy and spectral-imaging, alone or in combination with Scanning Near-field Optical Microscopy methods to study the molecular composition and dynamic changes in samples of biomedical interest at micrometric and submicrometric scales, respectively.
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Far-IR/THz spectral characterization of the coherent synchrotron radiation emission at diamond IR beamline B22. RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI 2011. [DOI: 10.1007/s12210-011-0149-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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9
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Ibrahimkutty S, Issenmann D, Schleef S, Müller AS, Mathis YL, Gasharova B, Huttel E, Steininger R, Göttlicher J, Baumbach T, Bartels A, Janke C, Plech A. Asynchronous sampling for ultrafast experiments with low momentum compaction at the ANKA ring. JOURNAL OF SYNCHROTRON RADIATION 2011; 18:539-545. [PMID: 21685668 DOI: 10.1107/s0909049511018267] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Accepted: 05/13/2011] [Indexed: 05/30/2023]
Abstract
A high-repetition-rate pump-probe experiment is presented, based on the asynchronous sampling approach. The low-α mode at the synchrotron ANKA can be used for a time resolution down to the picosecond limit for the time-domain sampling of the coherent THz emission as well as for hard X-ray pump-probe experiments, which probe structural dynamics in the condensed phase. It is shown that a synchronization of better than 1 ps is achieved, and examples of phonon dynamics of semiconductors are presented.
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Affiliation(s)
- Shyjumon Ibrahimkutty
- Institute for Synchrotron Radiation, Karlsruhe Institute of Technology, Karlsruhe, Germany
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Marcelli A, Cinque G. Infrared Synchrotron Radiation Beamlines: High Brilliance Tools for IR Spectromicroscopy. BIOMEDICAL APPLICATIONS OF SYNCHROTRON INFRARED MICROSPECTROSCOPY 2010. [DOI: 10.1039/9781849731997-00067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Augusto Marcelli
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati Via Enrico Fermi 40, I-00044 Frascati Italy
| | - Gianfelice Cinque
- Diamond Light Source, Harwell Science and Innovation Campus Chilton Didcot Oxon OX11 ODE UK
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11
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Makul’kin AV. Possible source of terahertz coherent synchrotron radiation based on an ultraminiature synchrotron. ATOM ENERGY+ 2006. [DOI: 10.1007/s10512-006-0178-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Byrd JM, Hao Z, Martin MC, Robin DS, Sannibale F, Schoenlein RW, Zholents AA, Zolotorev MS. Laser seeding of the storage-ring microbunching instability for high-power coherent terahertz radiation. PHYSICAL REVIEW LETTERS 2006; 97:074802. [PMID: 17026236 DOI: 10.1103/physrevlett.97.074802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2006] [Indexed: 05/12/2023]
Abstract
We report the first observation of laser seeding of the storage-ring microbunching instability. Above a threshold bunch current, the interaction of the beam and its radiation results in a coherent instability, observed as a series of stochastic bursts of coherent synchrotron radiation (CSR) at terahertz frequencies initiated by fluctuations in the beam density. We have observed that this effect can be seeded by imprinting an initial density modulation on the beam by means of laser "slicing." In such a situation, most of the bursts of CSR become synchronous with the pulses of the modulating laser and their average intensity scales exponentially with the current per bunch. We present detailed experimental observations of the seeding effect and a model of the phenomenon. This seeding mechanism also creates potential applications as a high-power source of CSR at terahertz frequencies.
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Affiliation(s)
- J M Byrd
- Ernest Orlando Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
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13
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Byrd JM, Hao Z, Martin MC, Robin DS, Sannibale F, Schoenlein RW, Zholents AA, Zolotorev MS. Tailored terahertz pulses from a laser-modulated electron beam. PHYSICAL REVIEW LETTERS 2006; 96:164801. [PMID: 16712239 DOI: 10.1103/physrevlett.96.164801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Indexed: 05/09/2023]
Abstract
We present a new method to generate steady and tunable, coherent, broadband terahertz radiation from a relativistic electron beam modulated by a femtosecond laser. We have demonstrated this in the electron storage ring at the Advanced Light Source. Interaction of an electron beam with a femtosecond laser pulse copropagating through a wiggler modulates the electron energies within a short slice of the electron bunch with about the same duration of the laser pulse. The bunch develops a longitudinal density perturbation due to the dispersion of electron trajectories, and the resulting hole emits short pulses of temporally and spatially coherent terahertz pulses synchronized to the laser. We present measurements of the intensity and spectra of these pulses. This technique allows tremendous flexibility in shaping the terahertz pulse by appropriate modulation of the laser pulse.
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Affiliation(s)
- J M Byrd
- Ernest Orlando Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
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14
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Wang F, Cheever D, Farkhondeh M, Franklin W, Ihloff E, van der Laan J, McAllister B, Milner R, Tschalaer C, Wang D, Wang DF, Zolfaghari A, Zwart T, Carr GL, Podobedov B, Sannibale F. Coherent THz synchrotron radiation from a storage ring with high-frequency RF system. PHYSICAL REVIEW LETTERS 2006; 96:064801. [PMID: 16606000 DOI: 10.1103/physrevlett.96.064801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2005] [Indexed: 05/08/2023]
Abstract
The generation of brilliant, stable, and broadband coherent synchrotron radiation (CSR) in electron storage rings depends strongly on ring rf system properties such as frequency and gap voltage. We have observed intense coherent radiation at frequencies approaching the THz regime produced by the MIT-Bates South Hall Ring, which employs a high-frequency S-band rf system. The measured CSR spectral intensity enhancement with 2 mA stored current was up to 10,000 times above background for wave numbers near 3 cm(-1). The measurements also uncovered strong beam instabilities that must be suppressed if such a very high rf frequency electron storage ring is to become a viable coherent THz source.
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Affiliation(s)
- F Wang
- MIT-Bates Linear Accelerator Center, Middleton, Massachusetts 01949, USA
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