RF recovery using CARA and depressed collector

M.A. LaPointe, J.L. Hirshfield, Changbiao Wang
PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)  
A system is being tested for recovery of rf power by conversion to DC pulsed power. The system consists of a cyclotron autoresonance accelerator (CARA) [1, 2] , and a single stage depressed collector (Fig. 1) . A 50 kV, 5 A electron beam is injected into CARA, and up to 1 MW of S-band rf power is absorbed by the beam with efficiency exceeding 95%. The beam then passes to a single stage depressed collector. RF to DC collection efficiencies of 73% are predicted but, due to collector breakdown
more » ... ector breakdown above 125 kV, a maximum collector efficiency of only 41% has been observed to date.
doi:10.1109/pac.2001.986562 fatcat:r533jlkubbaw7dz66ugy4wfddi