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Neutrino Factory/Muon Collider Document 524-v1

RF CAVITY STUDIES AT THE MUCOOL TEST AREA

Document #:
NFMCC-doc-524-v1
Document type:
MuCool Note
Submitted by:
Dazhang Huang
Updated by:
Dazhang Huang
Document Created:
24 Jul 2008, 16:44
Contents Revised:
24 Jul 2008, 16:44
Metadata Revised:
24 Jul 2008, 16:44
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Abstract:
The accelerating gradient in a RF cavity is limited by many factors such as the surface material properties, RF frequency, the external magnetic field and the gas pressure inside the cavity. In the MuCool Program, RF cavities are studied with the aim of understanding these basic mechanisms and improving their maximum stable accelerating gradient. These cavities are being developed for muon ionization cooling channel for a Neutrino Factory or Muon Collider. We report studies using the 805 MHz and 201 MHz RF cavities in the MuCool Test Area (MTA) at Fermilab. Some new results include data from several buttons of different materials mounted in the 805 MHz cavity, study of the accelerating gradient in the 201 MHz cavity and X-ray background radiation from the cavities due to Bremsstrahlung. The 201 MHz cavity has been shown to be stable at 19 MV/m, well in excess of its design gradient. We will also discuss results from the 201 MHz cavity studies in high magnetic field and introduce the study of E  B effects with the 805 MHz cavity and the testing of the new proton beamline for the MTA.
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