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Persistent URL http://purl.org/net/epubs/work/32499738
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Record Id 32499738
Title Design of the High Repetition Rate Photocathode Gun for the CLARA project
Contributors
Abstract The CLARA injector is required to deliver ultrashort singe electron pulses with a charge of 250 pC following with a repetition rate of 100 and/or 400 Hz. It should also provide 2 us trains of twenty 25 pC pulses with a repetition rate 100 Hz. To meet this challenge, a 1.5 cell S-band photocathode gun with a field of up to 120 MV/m and coaxial coupling has been chosen. The length of the first cell of 0.5 is decided on the basis of beam dynamic simulation with the goal to obtain optimal for CLARA parameters. In order to improve amplitude and phase stability of the RF field, the gun is equipped with RF probes, which will provide feedback to the RF system. The gun and coupler were designed to accept up to 10 MW peak and 10 kW average RF powers. Cooling will be achieved by water channels cut into the bulk of the copper. The coupler will transition from waveguide to coax using an innovative H-shaped dual feed system that cancels out any dipole mode components and allows tuning of the match. The RF and mechanical design of the CLARA high brightness photocathode gun along with beam dynamics simulations are presented in this paper.
Organisation ASTeC , CI , STFC
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Language English (EN)
Type Details URI(s) Local file(s) Year
Paper In Conference Proceedings In 27th International Linear Accelerator Conference (LINAC14), Geneva, Switzerland, 31 Aug 2014 - 5 Sep 2014, (2014): 1155-1158. http://accelconf.…4/papers/thpp126.pdf 2014
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