PAC2013 - List of Authors (Olivas, P.D.)

Paper	Title	Page
WEPHO14	System Considerations for 201.25 MHz RF System for LANSCE	963
	J.T.M. Lyles, W.C. Barkley, J. Davis, A.C. Naranjo, P.D. Olivas, D. Rees, G. M. Sandoval, Jr. LANL, Los Alamos, New Mexico, USA D. Baca, R.E. Bratton, R.D. Summers Compa Industries, Inc., Los Alamos, New Mexico, USA
	Funding: Work supported by the United States Department of Energy, National Nuclear Security Agency, under contract DE-AC52-06NA25396. The 45-year-old RF system for the LANSCE drift tube linac accelerator is being restored to 12% operating duty factor. It has been operating with reduced power capability since 2006 due to triode limitations, and has impacted the ability to accelerate high average accelerate proton current. Alternatives considered included the development of high power klystrons, solid-state or power grid tube amplifiers. The power grid tube was favored as it had already been demonstrated by the manufacturer and reused much of the existing infrastructure including water systems, coaxial transmission lines, and high voltage power systems. High duty factor tetrodes called Diacrodes® supply the requirements with ample headroom. A new power amplifier system was developed using these devices and has produced 3 MW peak and 300 kW of mean power with > 14 dB of power gain and > 62% efficiency. It has been operating for over five thousand hours into a test load. All ancillary components have been designed, fabricated and tested. The new system is scheduled for installation in early 2014.

Paper

Title

Page

System Considerations for 201.25 MHz RF System for LANSCE

963

J.T.M. Lyles, W.C. Barkley, J. Davis, A.C. Naranjo, P.D. Olivas, D. Rees, G. M. Sandoval, Jr.
LANL, Los Alamos, New Mexico, USA
D. Baca, R.E. Bratton, R.D. Summers
Compa Industries, Inc., Los Alamos, New Mexico, USA

Funding: Work supported by the United States Department of Energy, National Nuclear Security Agency, under contract DE-AC52-06NA25396.
The 45-year-old RF system for the LANSCE drift tube linac accelerator is being restored to 12% operating duty factor. It has been operating with reduced power capability since 2006 due to triode limitations, and has impacted the ability to accelerate high average accelerate proton current. Alternatives considered included the development of high power klystrons, solid-state or power grid tube amplifiers. The power grid tube was favored as it had already been demonstrated by the manufacturer and reused much of the existing infrastructure including water systems, coaxial transmission lines, and high voltage power systems. High duty factor tetrodes called Diacrodes® supply the requirements with ample headroom. A new power amplifier system was developed using these devices and has produced 3 MW peak and 300 kW of mean power with > 14 dB of power gain and > 62% efficiency. It has been operating for over five thousand hours into a test load. All ancillary components have been designed, fabricated and tested. The new system is scheduled for installation in early 2014.