Author: Karimov, R.
Paper Title Page
WEPHO08 200 kW CW, 350 MHz Multiple Beam Inductive Output Tube 946
 
  • L.R. Ives, G. Collins, R. Karimov, D. Marsden, M.E. Read
    CCR, San Mateo, California, USA
  • E.L. Eisen, T. Kimura
    CPI, Palo Alto, California, USA
 
  Funding: This development is funded by a grant from the U.S. Department of Energy with additional funding from communications & Power Industries, Inc and the Naval Surface Weapons Center.
Calabazas Creek Research, Inc., in collaboration with Communications & Power Industries, Inc., is completing assembly of a 200 kW CW, 350 MHz, multiple beam inductive output tube (MBIOT). Seven production IOT guns in a circular pattern are driven by a coaxial input cavity. The beams drive a fundamental mode cavity with the power coupled through a coaxial window on the axis and passing through a coaxial collector. The RF input power enters through a coaxial waveguide on the electron gun end of the IOT. The principle challenge is driving all seven electron guns with same RF power and phase. The MBIOT is designed to operate at 22 kV with a total beam current of approximately 13 A. Simulations predict an output power of 210 kW with an efficiency of 71%, 23 dB gain and 4 MW bandwidth. Initial testing is scheduled for fall 2013 and will be performed at the Naval Surface Weapons Center, followed by delivery and final testing at the Advanced Photon Source (APS) at Argonne National Laboratory. The device will be evaluated as a potential replacement for the klystrons now driving the APS. This presentation will describe the design and fabrication. Any test results will also be presented.