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@inproceedings{tang:ipac2021-thpab145,
author = {Zh.X. Tang and S.X. Dong and Y.J. Pei and B.F. Wei},
title = {{Cold Test of a Novel S-Band 1.6 Cell Photocathode RF Gun}},
booktitle = {Proc. IPAC'21},
pages = {4045--4047},
eid = {THPAB145},
language = {english},
keywords = {gun, cavity, coupling, cathode, simulation},
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-THPAB145},
url = {https://jacow.org/ipac2021/papers/thpab145.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-THPAB145},
abstract = {{The photocathode RF gun is one of the most critical components for high quality electron beam sources. The asymmetric multi-pole field contributes to the transverse emittance growth and degrades the beam quality. In order to overcome the problem, we propose a novel rotationally symmetric 1.6 cell RF gun to construct the symmetric field in this paper. The concrete proposal is that a coaxial cell cavity with a symmetrical distribution of four grooves is concatenated to the photocathode end of the traditional 0.6 cell cavity to form the novel 0.6 cell cavity. Through the detailed design study, the profile of the RF gun is optimized to improve the shunt impedance and mode separation and make the surface peak electric field at the photocathode end. Considering the filling time, a coupling slot is designed to couple input power into the RF gun. The RF cavity is machined by numerical control machine tool, and the tuning and low power RF measurement are carried out. The experimental results are consistent with the simulation results.}},
}