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TY - CONF AU - Freemire, B.T. AU - Chung, M. AU - Jana, M.R. AU - Johnson, R.P. AU - Leonova, M.A. AU - Moretti, A. AU - Schwarz, T.A. AU - Tollestrup, A.V. AU - Torun, Y. AU - Yonehara, K. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Plasma Chemistry in a High Pressure Gas Filled RF Test Cell for use in a Muon Cooling Channel J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - Filling an RF cavity with a high pressure gas prevents breakdown when the cavity is placed in a multi-Tesla external magnetic field. A beam of particles traversing the cavity, be it muons or protons, ionizes the gas, creating an electron-ion plasma which absorbs energy from the cavity. In order to understand the nature of this plasma loading, a variety of gas species, gas pressures, dopants, and cavity electric fields were investigated. Plasma induced energy loss, electron-ion recombination rates, ion-ion recombination rates, and electron attachment times were measured. The results for hydrogen, deuterium, helium, and nitrogen, doped with dry air will be presented. PB - JACoW CP - Geneva, Switzerland SP - 3917 EP - 3920 KW - ion KW - electron KW - plasma KW - experiment KW - cavity DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-THPRI064 UR - http://jacow.org/ipac2014/papers/thpri064.pdf ER -