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Title: Preliminary measurements for a sub-femtosecond electron bunch length diagnostic

Abstract

With electron beam durations down to femtoseconds and sub-femtoseconds achievable in current state-of-the-art accelerators, longitudinal bunch length diagnostics with resolution at the attosecond level are required. In this paper, we present such a novel measurement device which combines a high-power laser modulator with an RF deflecting cavity in the orthogonal direction. While the laser applies a strong correlated angular modulation to a beam, the RF deflector ensures the full resolution of this streaking effect across the bunch hence recovering the temporal beam profile with sub-femtosecond resolution. Preliminary measurements to test the key components of this concept were carried out at the Accelerator Test Facility (ATF) at Brookhaven National Laboratory recently, the results of which are presented and discussed here. Moreover, a possible application of the technique for novel accelerator schemes is examined based on simulations with the particle-tracking code elegant and our beam profile reconstruction tool.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
RadiaBeam Technologies, LLC, Santa Monica, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1548748
Alternate Identifier(s):
OSTI ID: 1610960
Grant/Contract Number:  
SC0007701
Resource Type:
Published Article
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Volume: 909 Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Bunch length diagnostic; Sub-femtosecond resolution; RF deflecting cavity; Laser modulator; Ultrashort beam; Longitudinal beam profile

Citation Formats

Weikum, M. K., Andonian, G., Sudar, N. S., Fedurin, M. G., Polyanskiy, M. N., Swinson, C., Ovodenko, A., O’Shea, F., Harrison, M., Sheng, Z. M., and Assmann, R. W. Preliminary measurements for a sub-femtosecond electron bunch length diagnostic. Netherlands: N. p., 2018. Web. doi:10.1016/j.nima.2018.02.038.
Weikum, M. K., Andonian, G., Sudar, N. S., Fedurin, M. G., Polyanskiy, M. N., Swinson, C., Ovodenko, A., O’Shea, F., Harrison, M., Sheng, Z. M., & Assmann, R. W. Preliminary measurements for a sub-femtosecond electron bunch length diagnostic. Netherlands. doi:https://doi.org/10.1016/j.nima.2018.02.038
Weikum, M. K., Andonian, G., Sudar, N. S., Fedurin, M. G., Polyanskiy, M. N., Swinson, C., Ovodenko, A., O’Shea, F., Harrison, M., Sheng, Z. M., and Assmann, R. W. Thu . "Preliminary measurements for a sub-femtosecond electron bunch length diagnostic". Netherlands. doi:https://doi.org/10.1016/j.nima.2018.02.038.
@article{osti_1548748,
title = {Preliminary measurements for a sub-femtosecond electron bunch length diagnostic},
author = {Weikum, M. K. and Andonian, G. and Sudar, N. S. and Fedurin, M. G. and Polyanskiy, M. N. and Swinson, C. and Ovodenko, A. and O’Shea, F. and Harrison, M. and Sheng, Z. M. and Assmann, R. W.},
abstractNote = {With electron beam durations down to femtoseconds and sub-femtoseconds achievable in current state-of-the-art accelerators, longitudinal bunch length diagnostics with resolution at the attosecond level are required. In this paper, we present such a novel measurement device which combines a high-power laser modulator with an RF deflecting cavity in the orthogonal direction. While the laser applies a strong correlated angular modulation to a beam, the RF deflector ensures the full resolution of this streaking effect across the bunch hence recovering the temporal beam profile with sub-femtosecond resolution. Preliminary measurements to test the key components of this concept were carried out at the Accelerator Test Facility (ATF) at Brookhaven National Laboratory recently, the results of which are presented and discussed here. Moreover, a possible application of the technique for novel accelerator schemes is examined based on simulations with the particle-tracking code elegant and our beam profile reconstruction tool.},
doi = {10.1016/j.nima.2018.02.038},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 909,
place = {Netherlands},
year = {2018},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: https://doi.org/10.1016/j.nima.2018.02.038

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Works referencing / citing this record:

Preliminary Measurements for a Sub-Femtosecond Electron Bunch Length Diagnostic
text, January 2018

  • Weikum, Maria; Andonian, G.; Sudar, N. S.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2018-01557