Speaker
Mr
John, T. M. Lyles
(LANL)
Description
A new high power 201.25 MHz RF system is being developed for the Los Alamos Neutron Science Center (LANSCE) proton drift tube linac (DTL). A planned upgrade will replace parts of the DTL RF system with new-generation components. When installed for the LANSCE-R project, the new system will reduce the total quantity of gridded power tubes from twenty-four to eight in the RF powerplant. The 3 MW final power amplifier will use a Thales TH628 Diacrode ?. This high-average power device eliminates the large anode modulator of the present LANSCE triode RF system. It will be driven by a new tetrode intermediate power amplifier. For the largest DTL tank, a pair of TH628 power amplifiers will be combined to provide additional peak power capability. A prototype system is being constructed to test components, using some of the infrastructure from previous high power RF projects at Los Alamos. High voltage DC power became available through innovative re-engineering of a LEDA klystron beam power supply. A summary of the design and construction of the power amplifiers, power supplies, and overall test setup and results will be presented.
Author
Mr
John, T. M. Lyles
(LANL)
Co-authors
Mr
Jerry Davis
(LANL)
Mr
Phil Torrez
(LANL)