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Title: RF design for the TOPGUN photogun: A cryogenic normal conducting copper electron gun

Abstract

Some recent studies of rf breakdown physics in cryogenic copper X-band accelerating structures have shown a dramatic increase in the operating gradient while maintaining low breakdown rates. The TOPGUN project, a collaboration between UCLA, SLAC, and INFN, will use this improvement in gradient to create an ultra-high brightness cryogenic normal conducting photoinjector [16]. The brightness is expected to be higher by a factor of 25 relative to the LCLS photogun [9]. This improvement in the brightness will lead to increased performance of X-Ray free electron lasers (FELs) and ultrafast electron diffraction devices [16]. Here, we present the rf design for this S-band photogun, which will be a drop-in replacement for the current LCLS photogun.

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [2];  [3];  [3]
  1. Univ. of California, Los Angeles, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. National Inst. of Nuclear Physics (INFN), Frascati (Italy). Frascati National Laboratories (LNF)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1390730
Grant/Contract Number:  
AC02–76SF00515; SC0009914
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 865; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; photoinjector; accelerator technology; electron accelerator; high brightness electron

Citation Formats

Cahill, A. D., Fukasawa, A., Pakter, R., Rosenzweig, J. B., Dolgashev, V. A., Limborg-Deprey, C., Tantawi, S., Spataro, B., and Castorina, G.. RF design for the TOPGUN photogun: A cryogenic normal conducting copper electron gun. United States: N. p., 2016. Web. doi:10.1016/j.nima.2016.08.062.
Cahill, A. D., Fukasawa, A., Pakter, R., Rosenzweig, J. B., Dolgashev, V. A., Limborg-Deprey, C., Tantawi, S., Spataro, B., & Castorina, G.. RF design for the TOPGUN photogun: A cryogenic normal conducting copper electron gun. United States. doi:10.1016/j.nima.2016.08.062.
Cahill, A. D., Fukasawa, A., Pakter, R., Rosenzweig, J. B., Dolgashev, V. A., Limborg-Deprey, C., Tantawi, S., Spataro, B., and Castorina, G.. Wed . "RF design for the TOPGUN photogun: A cryogenic normal conducting copper electron gun". United States. doi:10.1016/j.nima.2016.08.062. https://www.osti.gov/servlets/purl/1390730.
@article{osti_1390730,
title = {RF design for the TOPGUN photogun: A cryogenic normal conducting copper electron gun},
author = {Cahill, A. D. and Fukasawa, A. and Pakter, R. and Rosenzweig, J. B. and Dolgashev, V. A. and Limborg-Deprey, C. and Tantawi, S. and Spataro, B. and Castorina, G.},
abstractNote = {Some recent studies of rf breakdown physics in cryogenic copper X-band accelerating structures have shown a dramatic increase in the operating gradient while maintaining low breakdown rates. The TOPGUN project, a collaboration between UCLA, SLAC, and INFN, will use this improvement in gradient to create an ultra-high brightness cryogenic normal conducting photoinjector [16]. The brightness is expected to be higher by a factor of 25 relative to the LCLS photogun [9]. This improvement in the brightness will lead to increased performance of X-Ray free electron lasers (FELs) and ultrafast electron diffraction devices [16]. Here, we present the rf design for this S-band photogun, which will be a drop-in replacement for the current LCLS photogun.},
doi = {10.1016/j.nima.2016.08.062},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 865,
place = {United States},
year = {Wed Aug 31 00:00:00 EDT 2016},
month = {Wed Aug 31 00:00:00 EDT 2016}
}

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