A 201 MHz RF cavity design with non-stressed pre-curved Be windows for muon cooling channels
We present a 201-MHz RF cavity design for muon cooling channels with non-stressed and pre-curved Be foils to terminate the beam apertures. The Be foils are necessary to improve the cavity shunt impedance with large beam apertures needed for accommodating large transverse size muon beams. Be is a low-Z material with good electrical and thermal properties. It presents an almost transparent window to muon beams, but terminates the RF cavity electro-magnetically. Previous designs use pre-stressed flat Be foils in order to keep cavity from detuning resulted from RF heating on the window surface. Be foils are expensive, and it is difficult to make them under desired tension. An alternative design is to use precurved and non-stressed Be foils where the buckling direction is known, and frequency shifts can be properly predicted. We will present mechanical simulations on the Be foils in this paper.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director, Office of Science. High Energy Physics (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 815491
- Report Number(s):
- LBNL-51838; R&D Project: 459001; TRN: US0304627
- Resource Relation:
- Conference: 2003 Particle Accelerator Conference, Portland, OR (US), 05/12/2003--05/16/2003; Other Information: PBD: 1 May 2003
- Country of Publication:
- United States
- Language:
- English
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