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Fast mapping of terahertz bursting thresholds and characteristics at synchrotron light sources

Brosi, Miriam LU orcid ; Steinmann, Johannes L. ; Blomley, Edmund ; Bründermann, Erik ; Caselle, Michele ; Hiller, Nicole ; Kehrer, Benjamin ; Mathis, Yves Laurent ; Nasse, Michael J. and Rota, Lorenzo , et al. (2016) In Physical Review Accelerators and Beams 19(11).
Abstract

Dedicated optics with extremely short electron bunches enable synchrotron light sources to generate intense coherent THz radiation. The high degree of spatial compression in this so-called low-αc optics entails a complex longitudinal dynamics of the electron bunches, which can be probed studying the fluctuations in the emitted terahertz radiation caused by the microbunching instability ("bursting"). This article presents a "quasi-instantaneous" method for measuring the bursting characteristics by simultaneously collecting and evaluating the information from all bunches in a multibunch fill, reducing the measurement time from hours to seconds. This speed-up allows systematic studies of the bursting characteristics for various... (More)

Dedicated optics with extremely short electron bunches enable synchrotron light sources to generate intense coherent THz radiation. The high degree of spatial compression in this so-called low-αc optics entails a complex longitudinal dynamics of the electron bunches, which can be probed studying the fluctuations in the emitted terahertz radiation caused by the microbunching instability ("bursting"). This article presents a "quasi-instantaneous" method for measuring the bursting characteristics by simultaneously collecting and evaluating the information from all bunches in a multibunch fill, reducing the measurement time from hours to seconds. This speed-up allows systematic studies of the bursting characteristics for various accelerator settings within a single fill of the machine, enabling a comprehensive comparison of the measured bursting thresholds with theoretical predictions by the bunched-beam theory. This paper introduces the method and presents first results obtained at the ANKA synchrotron radiation facility.

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publishing date
type
Contribution to journal
publication status
published
in
Physical Review Accelerators and Beams
volume
19
issue
11
article number
110701
publisher
American Physical Society
external identifiers
  • scopus:85011283260
ISSN
2469-9888
DOI
10.1103/PhysRevAccelBeams.19.110701
language
English
LU publication?
no
additional info
Publisher Copyright: © 2016, American Physical Society. All rights reserved.
id
41023fc7-5384-4293-bbd5-56b5f92e50c4
date added to LUP
2024-11-26 10:03:02
date last changed
2024-11-26 12:07:07
@article{41023fc7-5384-4293-bbd5-56b5f92e50c4,
  abstract     = {{<p>Dedicated optics with extremely short electron bunches enable synchrotron light sources to generate intense coherent THz radiation. The high degree of spatial compression in this so-called low-α<sub>c</sub> optics entails a complex longitudinal dynamics of the electron bunches, which can be probed studying the fluctuations in the emitted terahertz radiation caused by the microbunching instability ("bursting"). This article presents a "quasi-instantaneous" method for measuring the bursting characteristics by simultaneously collecting and evaluating the information from all bunches in a multibunch fill, reducing the measurement time from hours to seconds. This speed-up allows systematic studies of the bursting characteristics for various accelerator settings within a single fill of the machine, enabling a comprehensive comparison of the measured bursting thresholds with theoretical predictions by the bunched-beam theory. This paper introduces the method and presents first results obtained at the ANKA synchrotron radiation facility.</p>}},
  author       = {{Brosi, Miriam and Steinmann, Johannes L. and Blomley, Edmund and Bründermann, Erik and Caselle, Michele and Hiller, Nicole and Kehrer, Benjamin and Mathis, Yves Laurent and Nasse, Michael J. and Rota, Lorenzo and Schedler, Manuel and Schönfeldt, Patrik and Schuh, Marcel and Schwarz, Markus and Weber, Marc and Müller, Anke Susanne}},
  issn         = {{2469-9888}},
  language     = {{eng}},
  number       = {{11}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Accelerators and Beams}},
  title        = {{Fast mapping of terahertz bursting thresholds and characteristics at synchrotron light sources}},
  url          = {{http://dx.doi.org/10.1103/PhysRevAccelBeams.19.110701}},
  doi          = {{10.1103/PhysRevAccelBeams.19.110701}},
  volume       = {{19}},
  year         = {{2016}},
}