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Title: Klystron equalization for RF feedback

Abstract

The next generation of colliding beam storage rings support higher luminosities by significantly increasing the number of bunches and decreasing the spacing between respective bunches. The heavy beam loading requires large RF cavity detuning which drives several lower coupled bunch modes very strongly. One technique which has proven to be very successful in reducing the coupled bunch mode driving impedance is RF feedback around the klystron-cavity combination. The gain and bandwidth of the feedback loop is limited by the group delay around the feedback loop. Existing klystrons on the world market have not been optimized for this application and contribute a large portion of the total loop group delay. This paper describes a technique to reduce klystron group delay by adding an equalizing filter to the klystron RF drive. Such a filter was built and tested on a 500 kill klystron as part of the on going PEP-II R&D effort here at SLAC.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10127428
Report Number(s):
SLAC-PUB-6049; CONF-9211172-1
ON: DE93007740
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Conference
Resource Relation:
Conference: International workshop on B factories: accelerators and experiments,Tsukuba (Japan),17-20 Nov 1992; Other Information: PBD: Jan 1993
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; KLYSTRONS; MODIFICATIONS; RF SYSTEMS; FEEDBACK; COLLIDING BEAMS; BEAM BUNCHING; TRANSFER FUNCTIONS; IMPEDANCE; 430303; EXPERIMENTAL FACILITIES AND EQUIPMENT

Citation Formats

Corredoura, P. Klystron equalization for RF feedback. United States: N. p., 1993. Web.
Corredoura, P. Klystron equalization for RF feedback. United States.
Corredoura, P. 1993. "Klystron equalization for RF feedback". United States. https://www.osti.gov/servlets/purl/10127428.
@article{osti_10127428,
title = {Klystron equalization for RF feedback},
author = {Corredoura, P},
abstractNote = {The next generation of colliding beam storage rings support higher luminosities by significantly increasing the number of bunches and decreasing the spacing between respective bunches. The heavy beam loading requires large RF cavity detuning which drives several lower coupled bunch modes very strongly. One technique which has proven to be very successful in reducing the coupled bunch mode driving impedance is RF feedback around the klystron-cavity combination. The gain and bandwidth of the feedback loop is limited by the group delay around the feedback loop. Existing klystrons on the world market have not been optimized for this application and contribute a large portion of the total loop group delay. This paper describes a technique to reduce klystron group delay by adding an equalizing filter to the klystron RF drive. Such a filter was built and tested on a 500 kill klystron as part of the on going PEP-II R&D effort here at SLAC.},
doi = {},
url = {https://www.osti.gov/biblio/10127428}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1993},
month = {Fri Jan 01 00:00:00 EST 1993}
}

Conference:
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