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@inproceedings{shao:ipac2021-thpab331,
author = {J.H. Shao and D.S. Doran and C.-J. Jing and S.V. Kuzikov and W. Liu and X. Lu and P. Piot and J.G. Power and W.H. Tan and C. Whiteford and E.E. Wisniewski},
% author = {J.H. Shao and D.S. Doran and C.-J. Jing and S.V. Kuzikov and W. Liu and X. Lu and others},
% author = {J.H. Shao and others},
title = {{High-Power Test of a Highly Over-Coupled X-Band RF Gun Driven by Short RF Pulses}},
booktitle = {Proc. IPAC'21},
pages = {4432--4434},
eid = {THPAB331},
language = {english},
keywords = {gun, cathode, electron, wakefield, flattop},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-THPAB331},
url = {https://jacow.org/ipac2021/papers/thpab331.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-THPAB331},
abstract = {{Beam brightness, a key figure of merit of RF photocathode guns, can be improved by increasing the cathode surface field which suppresses emittance growth from space charge. The surface field in normal-conducting structures is mainly limited by RF breakdown and it has been experimentally discovered that RF breakdown rate exponentially depends on RF pulse length. A highly over-coupled 1.5-cell X-band photocathode gun has been developed to be powered by 9 ns RF pulses with 3 ns rising time, 3 ns flat-top, and 3 ns falling time generated by an X-band metallic power extractor. In the recent experiment at Argonne Wakefield Accelerator facility, cathode surface field up to ~350 MV/m with a low breakdown rate has been obtained under ~250 MW input power. Strong beam loading from dark current was observed during RF conditioning and quickly recovered to a negligible level after the gun reached the maximum gradient. Detailed high-power test results and data analysis will be reported in this manuscript.}},
}