Title :
High power CARM for high gradient RF linac
Author :
Wang, Q.S. ; McDermott, D.B. ; Lin, A.T. ; Luhmann, N.C. ; Chu, K.R.
Abstract :
Summary form only given. A 150-MW, 17-GHz, 1.0-MV, TE11 CARM (cyclotron autoresonance maser) amplifier design suitable for driving the envisioned SLAC (Stanford Linear Accelerator Center) high-gradient RF linac has been developed. A lower-voltage (400-kV) 33-GHz proof-of-principle CARM experiment using a 50-kW magnetron drive has been designed to verify the Doppler upshift of the output frequency, study the region for stability, check the dependence of gain and efficiency on beam current, and attempt both magnetic tapering and gyroresonant wiggler efficiency enhancement schemes. The stable operation regions for the magnetic field for the proposed RF linac CARM and the proof-of-principle CARM have been found. Numerical simulations obtained high efficiencies (~40%) for the proposed CARM as well as the proof-of-principle CARM. The anticipated output power of the proof-of-principle CARM amplifier is 10 MW. driven by a 400-kV, 175-A, α=0.5 beam
Keywords :
Doppler effect; digital simulation; gyrotrons; linear accelerators; masers; 1.0 MV; 17 GHz; 17 MW; 175 A; 33 GHz; 400 kV; 45 kV; 50 kW; 500 A; Doppler upshift; Stanford Linear Accelerator Center; TE11; amplifier; cyclotron autoresonance maser; design; gyroresonant wiggler efficiency enhancement; high gradient RF linac; high power CARM; magnetic tapering; magnetron drive; numerical simulations; proof-of-principle;
Conference_Titel :
Plasma Science, 1990. IEEE Conference Record - Abstracts., 1990 IEEE International Conference on
Conference_Location :
Oakland, CA, USA
DOI :
10.1109/PLASMA.1990.110805
