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Title: Mechanical design and fabrication of the VHF-gun, the Berkeley normal-conducting continuous-wave high-brightness electron source

A high repetition rate, MHz-class, high-brightness electron source is a key element in future high-repetition-rate x-ray free electron laser-based light sources. The VHF-gun, a novel low frequency radio-frequency gun, is the Lawrence Berkeley National Laboratory (LBNL) response to that need. The gun design is based on a normal conducting, single cell cavity resonating at 186 MHz in the VHF band and capable of continuous wave operation while still delivering the high accelerating fields at the cathode required for the high brightness performance. The VHF-gun was fabricated and successfully commissioned in the framework of the Advanced Photo-injector EXperiment, an injector built at LBNL to demonstrate the capability of the gun to deliver the required beam quality. In conclusion, the basis for the selection of the VHF-gun technology, novel design features, and fabrication techniques are described.
Authors:
ORCiD logo [1] ;  [1] ;  [1] ;  [2] ; ORCiD logo [1] ;  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Institute of High Energy Physics, Beijing (China)
Publication Date:
Grant/Contract Number:
AC02-05CH11231; DEAC02-05CH11231; LDRD
Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 2; Related Information: © 2016 AIP Publishing LLC.; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION
OSTI Identifier:
1477251
Alternate Identifier(s):
OSTI ID: 1238186

Wells, R. P., Ghiorso, W., Staples, J., Huang, T. M., Sannibale, F., and Kramasz, T. D.. Mechanical design and fabrication of the VHF-gun, the Berkeley normal-conducting continuous-wave high-brightness electron source. United States: N. p., Web. doi:10.1063/1.4941836.
Wells, R. P., Ghiorso, W., Staples, J., Huang, T. M., Sannibale, F., & Kramasz, T. D.. Mechanical design and fabrication of the VHF-gun, the Berkeley normal-conducting continuous-wave high-brightness electron source. United States. doi:10.1063/1.4941836.
Wells, R. P., Ghiorso, W., Staples, J., Huang, T. M., Sannibale, F., and Kramasz, T. D.. 2016. "Mechanical design and fabrication of the VHF-gun, the Berkeley normal-conducting continuous-wave high-brightness electron source". United States. doi:10.1063/1.4941836. https://www.osti.gov/servlets/purl/1477251.
@article{osti_1477251,
title = {Mechanical design and fabrication of the VHF-gun, the Berkeley normal-conducting continuous-wave high-brightness electron source},
author = {Wells, R. P. and Ghiorso, W. and Staples, J. and Huang, T. M. and Sannibale, F. and Kramasz, T. D.},
abstractNote = {A high repetition rate, MHz-class, high-brightness electron source is a key element in future high-repetition-rate x-ray free electron laser-based light sources. The VHF-gun, a novel low frequency radio-frequency gun, is the Lawrence Berkeley National Laboratory (LBNL) response to that need. The gun design is based on a normal conducting, single cell cavity resonating at 186 MHz in the VHF band and capable of continuous wave operation while still delivering the high accelerating fields at the cathode required for the high brightness performance. The VHF-gun was fabricated and successfully commissioned in the framework of the Advanced Photo-injector EXperiment, an injector built at LBNL to demonstrate the capability of the gun to deliver the required beam quality. In conclusion, the basis for the selection of the VHF-gun technology, novel design features, and fabrication techniques are described.},
doi = {10.1063/1.4941836},
journal = {Review of Scientific Instruments},
number = 2,
volume = 87,
place = {United States},
year = {2016},
month = {2}
}