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Amplitude Linearizers for PEP-II 1.2 MW Klystrons and LLRF Systems [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2006.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
3 pages : digital, PDF file
Additional Creators
Stanford Linear Accelerator Center, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The PEP-II B-factory has aggressive current increases planned for luminosity through 2008. At 2.2A (HER) on 4A (LER) currents, we estimate that longitudinal growth rates will be comparable to the damping rates currently achieved in the existing low level RF and longitudinal feedback systems. Prior to having a good non-linear time domain model [1] it was postulated that klystron small signal gain non-linearity may be contributing to measured longitudinal growth rates being higher than linearly predicted growth rates. Five prototype klystron amplitude modulation linearizers have been developed to explore improved linearity in the LLRF system. The linearizers operate at 476 MHz with 15 dB dynamic range and 1 MHz linear control bandwidth. Results from lab measurements and high current beam tests are presented. Future development plans, conclusions from beam testing and ideas for future use of this linearization technique are presented.
Report Numbers
E 1.99:slac-pub-11945
slac-pub-11945
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
07/18/2006.
"slac-pub-11945"
Presented atEPAC 2006Edinburgh, Scotland, , 6/26/2006-6/30/2006.
Fox, J.D.; Teytelman, D.; Browne, J.; Rivetta, C.; Van Winkle, D.; Mastorides, T.
Funding Information
AC02-76SF00515
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