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Title: High power RF test of an 805 MHz RF cavity for a muon cooling channel

Abstract

We present recent high power RF test results on an 805 MHz cavity for a muon cooling experiment at Lab G in Fermilab. In order to achieve high accelerating gradient for large transverse emittance muon beams, the cavity design has adopted a pillbox like shape with 16 cm diameter beam iris covered by thin Be windows, which are demountable to allow for RF tests of different windows. The cavity body is made from copper with stiff stainless steel rings brazed to the cavity body for window attachments. View ports and RF probes are available for visual inspections of the surface of windows and cavity and measurement of the field gradient. Maximum of three thermo-couples can be attached to the windows for monitoring the temperature gradient on the windows caused by RF heating. The cavity was measured to have Q{sub 0} of about 15,000 with copper windows and coupling constant of 1.3 before final assembling. A 12 MW peak power klystron is available at Lab G in Fermilab for the high power test. The cavity and coupler designs were performed using the MAFIA code in the frequency and the time domain. Numerical simulation results and cold test measurements on the cavitymore » and coupler will be presented for comparisons.« less

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director, Office of Science (US)
OSTI Identifier:
799629
Report Number(s):
LBNL-50714; CBP Note - 436
R&D Project: 455101; B& R KA0403011; TRN: US0203768
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Conference
Resource Relation:
Conference: European Particle Accelerator Conference 2002 (EPAC 2002), Paris (FR), 06/03/2002--06/07/2002; Other Information: PBD: 30 May 2002
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 43 PARTICLE ACCELERATORS; ACCELERATORS; COPPER; COUPLING CONSTANTS; FERMILAB; HEATING; KLYSTRONS; MONITORING; MUON BEAMS; MUONS; PEAK LOAD; PROBES; SIMULATION; STAINLESS STEELS; TEMPERATURE GRADIENTS; WINDOWS; BERYLLIUM

Citation Formats

Li, Derun, Corlett, J., MacGill, R., Rimmer, R., Wallig, J., Zisman, M., Moretti, A., Qian, Z., Wu, V., Summers, D., and Norem, J. High power RF test of an 805 MHz RF cavity for a muon cooling channel. United States: N. p., 2002. Web.
Li, Derun, Corlett, J., MacGill, R., Rimmer, R., Wallig, J., Zisman, M., Moretti, A., Qian, Z., Wu, V., Summers, D., & Norem, J. High power RF test of an 805 MHz RF cavity for a muon cooling channel. United States.
Li, Derun, Corlett, J., MacGill, R., Rimmer, R., Wallig, J., Zisman, M., Moretti, A., Qian, Z., Wu, V., Summers, D., and Norem, J. Thu . "High power RF test of an 805 MHz RF cavity for a muon cooling channel". United States. https://www.osti.gov/servlets/purl/799629.
@article{osti_799629,
title = {High power RF test of an 805 MHz RF cavity for a muon cooling channel},
author = {Li, Derun and Corlett, J. and MacGill, R. and Rimmer, R. and Wallig, J. and Zisman, M. and Moretti, A. and Qian, Z. and Wu, V. and Summers, D. and Norem, J.},
abstractNote = {We present recent high power RF test results on an 805 MHz cavity for a muon cooling experiment at Lab G in Fermilab. In order to achieve high accelerating gradient for large transverse emittance muon beams, the cavity design has adopted a pillbox like shape with 16 cm diameter beam iris covered by thin Be windows, which are demountable to allow for RF tests of different windows. The cavity body is made from copper with stiff stainless steel rings brazed to the cavity body for window attachments. View ports and RF probes are available for visual inspections of the surface of windows and cavity and measurement of the field gradient. Maximum of three thermo-couples can be attached to the windows for monitoring the temperature gradient on the windows caused by RF heating. The cavity was measured to have Q{sub 0} of about 15,000 with copper windows and coupling constant of 1.3 before final assembling. A 12 MW peak power klystron is available at Lab G in Fermilab for the high power test. The cavity and coupler designs were performed using the MAFIA code in the frequency and the time domain. Numerical simulation results and cold test measurements on the cavity and coupler will be presented for comparisons.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {5}
}

Conference:
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