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Smith, R.R.

Paper Title Page
RPAP025 A 7MeV S-Band 2998MHz Variable Pulse Length Linear Accelerator System 1895
 
  • M. Hernandez, H. Deruyter, D. Skowbo, R.R. Smith
    Accuray, Inc, Mountain View, California
  • A.V. Mishin, A.J. Saverskiy
    AS&E, Billerica, Massachusetts
 
  American Science and Engineering High Energy Systems Division (AS&E HESD) has designed and commissioned a variable pulse length 7 MeV electron accelerator system. The system is capable of delivering a 7 MeV electron beam with a pulse length of 10 nS FWHM and a peak current of 1 ampere. The system can also produce electron pulses with lengths of 20, 50, 100, 200, 400 nS and 3 uS FWHM with corresponding lower peak currents. The accelerator system consists of a gridded electron gun, focusing coil, an electrostatic deflector system, Helmholtz coils, a standing wave side coupled S-band linac, a 2.6 MW peak power magnetron, an RF circulator, a fast toroid, vacuum system and a PLC/PC control system. The system has been operated at repetition rates up to 250pps. The design, simulations and experimental results from the accelerator system are presented in this paper.