rf breakdown with external magnetic fields in 201 and 805 MHz cavities
نویسندگان
چکیده
منابع مشابه
A study of high gradient 201 MHz cavities in strong magnetic fields for the MICE experiment
The early sections of the neutrino factory current design comprise high gradient normal conducting radio-frequency (RF) cavities embedded in high magnetic field. The performance of these cavities is known to degrade with magnetic field; but the exact nature of the phenomenon, its reproducibility and limitations are not well known. It is proposed to make use of the superconducting M1 magnet at C...
متن کاملRF Cavity Breakdown in External Magnetic Field
Neutrino Factories and Muon Colliders’ cooling lattices require both high gradient rf and strong focusing solenoids. Experiments have shown that there may be serious problems operating rf in the required magnetic fields. It is proposed that electrons emitted from asperities on one side of a cavity are focused by the magnetic field to the other side where they damage the cavity surface in small ...
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RF breakdown studies are presently being carried out at SLAC with klystron cavities in a traveling wave resonator (TWR). Different kinds of fabrication methods and several kinds of semiconducting and insulating coatings have been applied to X-Band TM010 cavities. RF breakdown thresholds up to 250 MV/m have been obtained. Dark current levels were found to be depressed in TiN-coated and single-po...
متن کاملContinued Monitoring of the Conditioning of the Fermilab Linac 805 MHz Cavities*
We have reported previously on the conditioning of the high-gradient accelerating cavities in the Fermilab Linac [1, 2, 3]. Automated measurements of the sparking rate have been recorded since 1994 and are reported here. The sparking rate has declined since the beginning, but there are indications that this rate may have leveled off now. The X-rays emitted by the cavities are continuing to decr...
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We report recent high power RF tests on an 805 MHz RF pillbox cavity with demountable windows for beam apertures at Lab G of Fermilab, a dedicated facility for testing of MUCOOL (muon cooling) components. The cavity is installed inside a superconducting solenoidal magnet. A 12 MW peak RF power klystron is used for the tests. The cavity has been processed both with and without magnetic field. Wi...
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ژورنال
عنوان ژورنال: Physical Review Special Topics - Accelerators and Beams
سال: 2009
ISSN: 1098-4402
DOI: 10.1103/physrevstab.12.031002