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}
}