CW RF system of the Project-X accelerator front end

Details CW RF system of the Project-X accelerator front end CW RF system of the Project-X accelerator front end

2012-02-09

arxiv.org/abs/1202.2134v1

Physics

Accelerator Physics

3 pp. 25th International Linear Accelerator Conference (LINAC10), 12-17 Sep 2010: Tsukuba, Japan

Scientific paper

Front end of a CW linac of the Project X contains an H source, an RFQ, a medium energy transport line with the beam chopper, and a SC low-beta linac that accelerates H- from 2.5 MeV to 160 MeV. SC Single Spoke Resonators (SSR) will be used in the linac, because Fermilab already successfully developed and tested a SSR for beta=0.21. Two manufactured cavities achieve 2.5 times more than design accelerating gradients. One of these cavities completely dressed, e.g. welded to helium vessel with integrated slow and fast tuners, and tested in CW regime. Successful tests of beta=0.21 SSR give us a confidence to use this type of cavity for low beta (0.117) and for high-beta (0.4) as well. Both types of these cavities are under development. In present report the basic constrains, parameters, electromagnetic and mechanical design for all the three SSR cavities, and first test results of beta=0.21 SSR are presented.

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