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Photonics
Special Issues
Advances and Application of Electron Beam Dynamics
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Advances and Application of Electron Beam Dynamics

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 7885

Special Issue Editors

Dr. Federico Nguyen

E-Mail Website
Guest Editor
ENEA Centro Ricerche Frascati, 00044 Frascati, Italy
Interests: free-electron lasers; undulator magnets; coherent radiation sources; beam dynamics; particle physics; high energy physics; data analysis
Prof. Dr. Alessandro Variola

E-Mail Website
Guest Editor
Istituto Nazionale di Fisica Nucleare - Sezione di Roma1, c/o Dipartimento di Fisica - Universita' degli Studi di Roma "La Sapienza" , 00185 Roma, Italy
Interests: particle sources; radiation sources; coherence and interference effects in radiation sources; polarization; particle physics
Dr. Alberto Petralia

E-Mail
Guest Editor
ENEA Fusion and Nuclear Safety Department, R.C. Frascati, via Enrico Fermi 45, 00044 Frascati (Rome), Italy
Interests: free-electron lasers; insertion devices; undulator magnets; coherent radiation sources; beam dynamics; laser optics

Special Issue Information

Dear Colleagues,

We are pleased to invite you to submit a manuscript to the Photonics Special Issue “Advances and Application of Electron Beam Dynamics”. Radiation sources based on electron beams play a well-established role in exploring and characterizing advanced materials, biomaterials, and living matter, with a diverse range of ground-breaking applications in industry, medicine, life science, fundamental research, and cultural heritage. For example, synchrotron radiation and free-electron laser facilities have allowed broadening the region of the electromagnetic spectrum accessible to precision investigation, extending from terahertz wave frequencies to Hard X-ray photons. Moreover, the new generation of Synchrotron light sources has enabled us to reach emittance levels capable of providing fully diffraction-limited X-ray sources. At the same time, the impressive recent development in high power laser systems and optical cavities has recently boosted the Compton backscattering sources field, allowing to reach the very hard X-rays and Gamma-ray domains with compact facilities at reduced costs.

Furthermore, electron beam light sources are going through an extraordinary phase of development and innovation in terms of brightness, acceleration gradient, and low electron bunch emittance. In particular, novel acceleration schemes based on laser, plasma or dielectric fields promise a dramatic reduction in size of future facilities. At the same time, advanced concepts of bright electron injectors and high gradient radiofrequency cavities are driving the design toward more compact and cost-effective facilities. These achievements also open the way for a new generation of “exotic” radiation sources based, respectively, on channeling, coherent bremsstrahlung, parametric x-rays, and Smith–Purcell effects.

This Special Issue plans to offer a wide up-to-date review on recent progress within the field of electron-based photon sources encompassing the most recent results at running facilities, experimental beam techniques, beam optics instruments, advanced theoretical concepts, diagnostic tools, novel beam configurations, coherence enhancement methods, and upgrade status of present user facilities.

Dr. Federico Nguyen
Prof. Dr. Alessandro Variola
Dr. Alberto Petralia
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • synchrotron radiation
  • free-electron laser
  • beam diagnostics
  • beam optics
  • THz radiation
  • channeling
  • Compton sources
  • diffraction limit
  • X-ray sources
  • novel acceleration schemes
  • coherence effects
  • beam brightness
  • low emittance

Published Papers (3 papers)

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Research

19 pages, 1983 KiB  
Article
A High-Energy and High-Intensity Inverse Compton Scattering Source Based on CompactLight Technology
by Vlad Mușat, Andrea Latina and Gerardo D’Auria
Photonics 2022, 9(5), 308; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics9050308 - 30 Apr 2022
Cited by 4 | Viewed by 2581
Abstract
An inverse Compton scattering source based on the CompactLight injector and capable of producing MeV gamma-rays with a brilliance several orders of magnitude larger than existing sources is proposed. The CompactLight injector can operate at a bunch repetition rate of 1 kHz, with [...] Read more.
An inverse Compton scattering source based on the CompactLight injector and capable of producing MeV gamma-rays with a brilliance several orders of magnitude larger than existing sources is proposed. The CompactLight injector can operate at a bunch repetition rate of 1 kHz, with trains of 50 bunches and a bunch spacing of 5 ns, giving a maximum total flux of 8.62 × 1011 photons/s. For a normalised emittance of 0.3 mm mrad, an average brilliance of 1.85 × 1014 photons/(s mm2 mrad2 0.1%BW) could be obtained. A 1 kW colliding laser was considered, corresponding to a laser pulse energy of 50 mJ. Given the electron beam energy up to 300 MeV provided by the CompactLight photoinjector, a maximum photon energy of 2 MeV is obtained. Simulations of inverse Compton scattering were performed using the RF-Track particle tracking software. Parametric scans were used to derive the electron and laser spot sizes maximising the total flux. The accelerator optic components were also determined from the final focus design, which was optimised for a micrometer-level electron beam size at the interaction point. Given a maximum total flux in the order of 1012 photons/s and a maximum output photon energy in the MeV range, the proposed source could be used for various applications, including X-ray imaging. Full article
(This article belongs to the Special Issue Advances and Application of Electron Beam Dynamics)
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10 pages, 1932 KiB  
Article
A Laser Frequency Transverse Modulation Might Compensate for the Spectral Broadening Due to Large Electron Energy Spread in Thomson Sources
by Vittoria Petrillo, Illya Drebot, Geoffrey Krafft, Cesare Maroli, Andrea R. Rossi, Marcello Rossetti Conti, Marcel Ruijter and Balša Terzić
Photonics 2022, 9(2), 62; https://doi.org/10.3390/photonics9020062 - 25 Jan 2022
Cited by 1 | Viewed by 2030
Abstract
Compact laser plasma accelerators generate high-energy electron beams with increasing quality. When used in inverse Compton backscattering, however, the relatively large electron energy spread jeopardizes potential applications requiring small bandwidths. We present here a novel interaction scheme that allows us to compensate for [...] Read more.
Compact laser plasma accelerators generate high-energy electron beams with increasing quality. When used in inverse Compton backscattering, however, the relatively large electron energy spread jeopardizes potential applications requiring small bandwidths. We present here a novel interaction scheme that allows us to compensate for the negative effects of the electron energy spread on the spectrum, by introducing a transverse spatial frequency modulation in the laser pulse. Such a laser chirp, together with a properly dispersed electron beam, can substantially reduce the broadening of the Compton bandwidth due to the electron energy spread. We show theoretical analysis and numerical simulations for hard X-ray Thomson sources based on laser plasma accelerators. Full article
(This article belongs to the Special Issue Advances and Application of Electron Beam Dynamics)
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11 pages, 5816 KiB  
Article
Ultrafast High-Voltage Kicker System for Ion-Clearing Gaps
by Alexander Yu. Smirnov, Ronald Agustsson, Stephen V. Benson, Dmitry Gavryushkin, Jiquan Guo, Sergey V. Kutsaev, Adam Moro, Gunn Tae Park, Alexei V. Smirnov, Haipeng Wang and Shukui Zhang
Photonics 2021, 8(11), 507; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics8110507 - 11 Nov 2021
Viewed by 2272
Abstract
Ionization scattering of electron beams with residual gas molecules causes ion trapping in electron rings, both in a collider and electron cooling system. These trapped ions may cause emittance growth, tune shift, halo formation, and coherent coupled bunch instabilities. In order to clear [...] Read more.
Ionization scattering of electron beams with residual gas molecules causes ion trapping in electron rings, both in a collider and electron cooling system. These trapped ions may cause emittance growth, tune shift, halo formation, and coherent coupled bunch instabilities. In order to clear the ions and prevent them from accumulating turn after turn, the gaps in a temporal structure of the beam are typically used. Typically, the gap in the bunch train has a length of a few percent of the ring circumference. In those regions, the extraction electrodes with high pulsed voltages are introduced. In this paper, we present the design consideration and initial test results of the high-voltage pulsed kicker hardware that includes vacuum device and pulsed voltage driver, capable of achieving over 3 kV of deflecting voltage amplitude, rise and fall times of less than 10 ns, 100 ns flat-top duration at 1.4 MHz repetition rate. Full article
(This article belongs to the Special Issue Advances and Application of Electron Beam Dynamics)
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