Proposal for high pressure RF cavity test in the MTA

Yonehara, K.

Fermi National Accelerator Laboratory

关键词: Quality Factor Accelerators;    Cavities;    43 Particle Accelerators;    Muon Beams;    Ionization;   

DOI  :  10.2172/991771
RP-ID  :  FERMILAB-TM-2474-APC
RP-ID  :  AC02-07CH11359
RP-ID  :  991771

美国|英语

来源: UNT Digital Library

【 摘 要 】

In order to demonstrate the feasibility of high pressure hydrogen gas filled RF (HPRF) cavities for muon ionization cooling, an HPRF cavity must be tested with a high intensity charged beam. When an HPRF cavity is irradiated with an intense beam each incident particle generates about 1000 electrons and ions per cubic centimeter in a high pressure cavity via ionization. These ionization electrons are influenced by the RF field and the RF quality factor goes down. This Q factor reduction will be a problem with a multi bunch beam, e.g., a muon beam for a muon collider consists of a 12 to 20 bunch train beam with 5 ns timing gap. Thus, the RF field must recover in few nano seconds. We propose to use a 400 MeV proton beam in the MTA and measure a beam loading effect in the HPRF cavity and study the recovery mechanism of the RF field.