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Title: Advances in high gradient normal conducting accelerator structures

Abstract

Here, this paper reviews the current state-of-the-art in understanding the phenomena of ultra-high vacuum radio-frequency (rf) breakdown in accelerating structures and the efforts to improve stable operation of the structures at accelerating gradients above 100 MV/m. Numerous studies have been conducted recently with the goal of understanding the dependence of the achievable accelerating gradients and breakdown rates on the frequency of operations, the geometry of the structure, material and method of fabrication, and operational temperature. Tests have been conducted with single standing wave accelerator cells as well as with the multi-cell traveling wave structures. Notable theoretical effort was directed at understanding the physical mechanisms of the rf breakdown and its statistical behavior. Finally, the achievements presented in this paper are the result of the large continuous self-sustaining collaboration of multiple research institutions in the United States and worldwide.

Authors:
ORCiD logo [1];  [2];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States).
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC). High Energy Physics (HEP) (SC-25); USDOE
OSTI Identifier:
1427389
Alternate Identifier(s):
OSTI ID: 1703439
Report Number(s):
LA-UR-18-20641
Journal ID: ISSN 0168-9002; TRN: US1802460
Grant/Contract Number:  
AC52-06NA25396; AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 907; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 43 PARTICLE ACCELERATORS; Normal conducting radio-frequency acceleration; Accelerating cavity; Inear accelerators

Citation Formats

Simakov, Evgenya Ivanovna, Dolgashev, Valery A., and Tantawi, Sami G. Advances in high gradient normal conducting accelerator structures. United States: N. p., 2018. Web. doi:10.1016/j.nima.2018.02.085.
Simakov, Evgenya Ivanovna, Dolgashev, Valery A., & Tantawi, Sami G. Advances in high gradient normal conducting accelerator structures. United States. https://doi.org/10.1016/j.nima.2018.02.085
Simakov, Evgenya Ivanovna, Dolgashev, Valery A., and Tantawi, Sami G. Fri . "Advances in high gradient normal conducting accelerator structures". United States. https://doi.org/10.1016/j.nima.2018.02.085. https://www.osti.gov/servlets/purl/1427389.
@article{osti_1427389,
title = {Advances in high gradient normal conducting accelerator structures},
author = {Simakov, Evgenya Ivanovna and Dolgashev, Valery A. and Tantawi, Sami G.},
abstractNote = {Here, this paper reviews the current state-of-the-art in understanding the phenomena of ultra-high vacuum radio-frequency (rf) breakdown in accelerating structures and the efforts to improve stable operation of the structures at accelerating gradients above 100 MV/m. Numerous studies have been conducted recently with the goal of understanding the dependence of the achievable accelerating gradients and breakdown rates on the frequency of operations, the geometry of the structure, material and method of fabrication, and operational temperature. Tests have been conducted with single standing wave accelerator cells as well as with the multi-cell traveling wave structures. Notable theoretical effort was directed at understanding the physical mechanisms of the rf breakdown and its statistical behavior. Finally, the achievements presented in this paper are the result of the large continuous self-sustaining collaboration of multiple research institutions in the United States and worldwide.},
doi = {10.1016/j.nima.2018.02.085},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = ,
volume = 907,
place = {United States},
year = {2018},
month = {3}
}

Journal Article:

Citation Metrics:
Cited by: 4 works
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Figures / Tables:

Figure 1 Figure 1: Typical experimental breakdown data with constant rf pulse shape and rf power: a) the number of accumulated breakdowns vs. the number of pulses and a linear fit; and b) the histogram of the number of pulses between the consequent breakdowns and an exponential fit.

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Works referencing / citing this record:

Mechanism of vacuum breakdown in radio-frequency accelerating structures
journal, June 2018


Focusing of High-Brightness Electron Beams with Active-Plasma Lenses
journal, October 2018