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Accession Number DE2012-1029944
Title 200 MHz 35 MW Multiple Beam Klystron for Accelerator Applications Final Report, (Final Report).
Publication Date Nov 2011
Media Count 18p
Personal Author D. Marsden M. Read P. Ferguson R. L. Ives
Abstract Calabazas Creek Research, Inc. (CCR) performed initial development of a compact and reliable 35 MW, multiple beam klystron (MBK) at 200 MHz with a pulse length of 0.125 ms and a 30 Hz repetition rate. The device was targeted for acceleration and ionization cooling of a muon collider, but there are several other potential applications in this frequency range. The klystron uses multiple beams propagating in individual beam tunnels to reduce space charge and allow reduction in the accelerating voltage. This allows a significant reduction in length over a single beam source. More importantly this allows more efficient and less expensive power supplies. At 200 MHz, the interaction circuit for a single beam klystron would be more than six meters long to obtain 50% efficiency and 50 dB gain. This would require a beam voltage of approximately 400 kV and current of 251 A for a microperveance of 1.0. For an eight beam MBK with the same beam perveance, a three meter long interaction circuit achieves the same power and gain. Each beam operates at 142 kV and 70A. The Phase I demonstrated that this device could be fabricated with funding available in a Phase II program and could achieve the program specifications.
Keywords Acceleration
Multiple beams
Muon colliders

Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 46 - Physics
Corporate Author Calabazas Creek Research, Inc., Saratoga, CA.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1226
Contract Number SC0000804

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