• D.A. Swenson
  Linac Systems, LLC, Albuquerque, New Mexico

A 2.5-MeV, 20-mA, Cw Linac System is nearing completion at Linac Systems, LLC. The intended application is to produce abundant quantities of epithermal neutrons for the BNCT medical application. The operating frequency is 200 MHz. The linac structure consist of a radial strut RFQ linac section to an energy of 0.75 MeV and an RFI linac section to the final energy of 2.5 MeV. The two linac structures are resonantly coupled by a quarter-wave-stub resonant coupler, which locks the relative phases and relative field amplitudes of the two structures. The rf power is loop-coupled to the RFQ section, and the power required for the RFI section is transmitted through the resonant coupler. The ion source is an ECR microwave type, operated at 25 keV. The LEBT includes dual magnetic solenoid focusing lenses and independent x and y steering magnets. The final amplifier of the rf power system is a cavity-based amplifier with 6 CPI/Eimac YC-300A power tubes in parallel. The peak and average power output is 180 kW cw. The current status of the system will be described.