JACoW logo

Joint Accelerator Conferences Website

The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.


RIS citation export for THPAB331: High-Power Test of a Highly Over-Coupled X-Band RF Gun Driven by Short RF Pulses

TY  - CONF
AU  - Shao, J.H.
AU  - Doran, D.S.
AU  - Jing, C.-J.
AU  - Kuzikov, S.V.
AU  - Liu, W.
AU  - Lu, X.
AU  - Piot, P.
AU  - Power, J.G.
AU  - Tan, W.H.
AU  - Whiteford, C.
AU  - Wisniewski, E.E.
ED  - Liu, Lin
ED  - Byrd, John M.
ED  - Neuenschwander, Regis T.
ED  - Picoreti, Renan
ED  - Schaa, Volker R. W.
TI  - High-Power Test of a Highly Over-Coupled X-Band RF Gun Driven by Short RF Pulses
J2  - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021
CY  - Campinas, SP, Brazil
T2  - International Particle Accelerator Conference
T3  - 12
LA  - english
AB  - 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.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 4432
EP  - 4434
KW  - gun
KW  - cathode
KW  - electron
KW  - wakefield
KW  - flattop
DA  - 2021/08
PY  - 2021
SN  - 2673-5490
SN  - 978-3-95450-214-1
DO  - doi:10.18429/JACoW-IPAC2021-THPAB331
UR  - https://jacow.org/ipac2021/papers/thpab331.pdf
ER  -