Maximizing Number of Passes in Muon RLA
A conceptual design of a high-pass-number Recirculating Linear Accelerator (RLA) for muons is presented. The scheme involves two superconducting linacs (200 MHz): a single pass linear Pre-accelerator followed by a multi-pass (7.5-pass) `Dogbone' RLA. Acceleration starts after ionization cooling at 273 MeV/c and proceeds to 32 GeV. The Pre-accelerator captures a large muon phase space and accelerates muons to relativistic energies, while adiabatically decreasing the phase-space volume, so that effective acceleration in the RLA is possible. The RLA further compresses and shapes up the longitudinal and transverse phase-spaces, while increasing the energy. Appropriate choice of multi-pass linac optics based on FODO focusing assures large number of passes in the RLA betatron phase advance gradually diminish uniformly in both the horizontal and vertical plane. The proposed `Dogbone' configuration facilitates simultaneous acceleration of both µ± species through the requirement of mirror sym
- Research Organization:
- Thomas Jefferson Lab National Accelerator Facility
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 955820
- Report Number(s):
- JLAB-ACC-07-704; DOE/OR/23177-0378
- Country of Publication:
- United States
- Language:
- English
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