Longevity Studies of CSC Prototypes Operating with Ar+CO$_{2}$ Gas Mixture and Different Fractions of CF$_{4}$
physics.ins-det
/ Authors
Emanuela Barberis, Nebojsa Begovic, Nicholas Haubrich, Mikhail Ignatenko, Andrey Korytov, Ota Kukral, Ekaterina Kuznetsova, Armando Lanaro, Andrew MacCabe, Predrag Milenovic
and 10 more authors
Dubravka Milovanovic, Guenakh Mitselmakher, Aleksandra Radulovic, Boris Rajcic, Jake Rosenzweig, Bingran Wang, Jian Wang, Andrew Wisecarver, Darien Wood, Emma Yeager
/ Abstract
Studies of Cathode Strip Chamber longevity, comparing Ar+CO2 gas mixtures with fractions of 5%, 2%, and 0% CF4, were performed using several small cathode strip prototype chambers. In each trial, a localized source of radiation was used to irradiate up to an accumulated charge of about 300 mC/cm. Additionally, longevity of a uniformly irradiated prototype operating with 2% CF4 was studied at the CERN Gamma Irradiation Facility GIF++. Post-hoc analysis of the chamber electrodes using spectroscopy techniques was also done.