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

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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 ... continued below

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Li, Derun; Corlett, J.; MacGill, R.; Rimmer, R.; Wallig, J.; Zisman, M. et al. May 30, 2002.

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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.

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INIS; OSTI as DE00799629

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  • European Particle Accelerator Conference 2002 (EPAC 2002), Paris (FR), 06/03/2002--06/07/2002

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  • Report No.: LBNL--50714
  • Report No.: CBP Note - 436
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 799629
  • Archival Resource Key: ark:/67531/metadc739016

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  • May 30, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 4, 2016, 6:16 p.m.

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Li, Derun; Corlett, J.; MacGill, R.; Rimmer, R.; Wallig, J.; Zisman, M. et al. High power RF test of an 805 MHz RF cavity for a muon cooling channel, article, May 30, 2002; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc739016/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.