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Title: Compact − 300    kV dc inverted insulator photogun with biased anode and alkali-antimonide photocathode

Abstract

This contribution describes the latest milestones of a multiyear program to build and operate a compact –300 kV dc high voltage photogun with inverted insulator geometry and alkali-antimonide photocathodes. Photocathode thermal emittance measurements and quantum efficiency charge lifetime measurements at average current up to 4.5 mA are presented, as well as an innovative implementation of ion generation and tracking simulations to explain the benefits of a biased anode to repel beam line ions from the anode-cathode gap, to dramatically improve the operating lifetime of the photogun and eliminate the occurrence of micro-arc discharges.

Authors:
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Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1574074
Alternate Identifier(s):
OSTI ID: 1574422
Report Number(s):
JLAB-ACC-19-3105; DOE/OR/23177-4845
Journal ID: ISSN 2469-9888; PRABCJ; 113401
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Name: Physical Review Accelerators and Beams Journal Volume: 22 Journal Issue: 11; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Hernandez-Garcia, C., Adderley, P., Bullard, B., Benesch, J., Grames, J., Gubeli, J., Hannon, F., Hansknecht, J., Jordan, J., Kazimi, R., Krafft, G. A., Mamun, M. A., Poelker, M., Stutzman, M. L., Suleiman, R., Tiefenback, M., Wang, Y., Zhang, S., Baumgart, H., Palacios-Serrano, G., Wijethunga, S., Yoskowitz, J., Valerio Lizarraga, C. A., Montoya Soto, R., and Canales Ramos, A. Compact − 300    kV dc inverted insulator photogun with biased anode and alkali-antimonide photocathode. United States: N. p., 2019. Web. doi:10.1103/PhysRevAccelBeams.22.113401.
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Hernandez-Garcia, C., Adderley, P., Bullard, B., Benesch, J., Grames, J., Gubeli, J., Hannon, F., Hansknecht, J., Jordan, J., Kazimi, R., Krafft, G. A., Mamun, M. A., Poelker, M., Stutzman, M. L., Suleiman, R., Tiefenback, M., Wang, Y., Zhang, S., Baumgart, H., Palacios-Serrano, G., Wijethunga, S., Yoskowitz, J., Valerio Lizarraga, C. A., Montoya Soto, R., & Canales Ramos, A. Compact − 300    kV dc inverted insulator photogun with biased anode and alkali-antimonide photocathode. United States. https://doi.org/10.1103/PhysRevAccelBeams.22.113401
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Hernandez-Garcia, C., Adderley, P., Bullard, B., Benesch, J., Grames, J., Gubeli, J., Hannon, F., Hansknecht, J., Jordan, J., Kazimi, R., Krafft, G. A., Mamun, M. A., Poelker, M., Stutzman, M. L., Suleiman, R., Tiefenback, M., Wang, Y., Zhang, S., Baumgart, H., Palacios-Serrano, G., Wijethunga, S., Yoskowitz, J., Valerio Lizarraga, C. A., Montoya Soto, R., and Canales Ramos, A. Wed . "Compact − 300    kV dc inverted insulator photogun with biased anode and alkali-antimonide photocathode". United States. https://doi.org/10.1103/PhysRevAccelBeams.22.113401.
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@article{osti_1574074,
title = {Compact − 300    kV dc inverted insulator photogun with biased anode and alkali-antimonide photocathode},
author = {Hernandez-Garcia, C. and Adderley, P. and Bullard, B. and Benesch, J. and Grames, J. and Gubeli, J. and Hannon, F. and Hansknecht, J. and Jordan, J. and Kazimi, R. and Krafft, G. A. and Mamun, M. A. and Poelker, M. and Stutzman, M. L. and Suleiman, R. and Tiefenback, M. and Wang, Y. and Zhang, S. and Baumgart, H. and Palacios-Serrano, G. and Wijethunga, S. and Yoskowitz, J. and Valerio Lizarraga, C. A. and Montoya Soto, R. and Canales Ramos, A.},
abstractNote = {This contribution describes the latest milestones of a multiyear program to build and operate a compact –300 kV dc high voltage photogun with inverted insulator geometry and alkali-antimonide photocathodes. Photocathode thermal emittance measurements and quantum efficiency charge lifetime measurements at average current up to 4.5 mA are presented, as well as an innovative implementation of ion generation and tracking simulations to explain the benefits of a biased anode to repel beam line ions from the anode-cathode gap, to dramatically improve the operating lifetime of the photogun and eliminate the occurrence of micro-arc discharges.},
doi = {10.1103/PhysRevAccelBeams.22.113401},
journal = {Physical Review Accelerators and Beams},
number = 11,
volume = 22,
place = {United States},
year = {Wed Nov 13 00:00:00 EST 2019},
month = {Wed Nov 13 00:00:00 EST 2019}
}
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https://doi.org/10.1103/PhysRevAccelBeams.22.113401
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