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Title: High-power operation of accelerator structures at liquid nitrogen temperature

Abstract

The microwave properties of two S-band resonant structures were measured under pulsed high-power operation at liquid nitrogen temperature. One was a simple cylindrical pillbox cavity operating in the TM010 mode, and the other was a high surface gradient side-coupled standing-wave structure. Both were machined from OFHC copper. At low power levels, the Q of both structures measured at liquid nitrogen temperature (-197C) increased by the same factor over that at 20C. When measured at high power levels, the enhancement factor was much lower. The low-temperature Q was found to be a function of the peak power of the RF pulse, rather than the average power level. The test method is described, and results of the tests and theoretical studies are presented.

Authors:
; ; ;
Publication Date:
Research Org.:
Varian Associates, Palo Alto, CA
OSTI Identifier:
6190755
Report Number(s):
CONF-850504-
Journal ID: CODEN: IETNA; TRN: 86-004217
Resource Type:
Conference
Journal Name:
IEEE Trans. Nucl. Sci.; (United States)
Additional Journal Information:
Journal Volume: NS-32:5; Conference: Particle accelerator conference, Vancouver, Canada, 13 May 1985
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; CAVITY RESONATORS; EFFICIENCY; MICROWAVE RADIATION; CRYOGENICS; LOW TEMPERATURE; PERFORMANCE; RF SYSTEMS; STANDING WAVES; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; EQUIPMENT; RADIATIONS; RESONATORS; 430100* - Particle Accelerators- Design, Development, & Operation

Citation Formats

McEuen, A H, Lui, P, Tanabe, E, and Vaguine, V. High-power operation of accelerator structures at liquid nitrogen temperature. United States: N. p., 1985. Web.
McEuen, A H, Lui, P, Tanabe, E, & Vaguine, V. High-power operation of accelerator structures at liquid nitrogen temperature. United States.
McEuen, A H, Lui, P, Tanabe, E, and Vaguine, V. 1985. "High-power operation of accelerator structures at liquid nitrogen temperature". United States.
@article{osti_6190755,
title = {High-power operation of accelerator structures at liquid nitrogen temperature},
author = {McEuen, A H and Lui, P and Tanabe, E and Vaguine, V},
abstractNote = {The microwave properties of two S-band resonant structures were measured under pulsed high-power operation at liquid nitrogen temperature. One was a simple cylindrical pillbox cavity operating in the TM010 mode, and the other was a high surface gradient side-coupled standing-wave structure. Both were machined from OFHC copper. At low power levels, the Q of both structures measured at liquid nitrogen temperature (-197C) increased by the same factor over that at 20C. When measured at high power levels, the enhancement factor was much lower. The low-temperature Q was found to be a function of the peak power of the RF pulse, rather than the average power level. The test method is described, and results of the tests and theoretical studies are presented.},
doi = {},
url = {https://www.osti.gov/biblio/6190755}, journal = {IEEE Trans. Nucl. Sci.; (United States)},
number = ,
volume = NS-32:5,
place = {United States},
year = {Tue Oct 01 00:00:00 EDT 1985},
month = {Tue Oct 01 00:00:00 EDT 1985}
}

Conference:
Other availability
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