Construction and expected performance of the hadron blind detector for the PHENIX experiment at RHIC

A. Milov, W. Anderson, B. Azmoun, C. Y. Chi, A. Drees, A. Dubey, M. Durham, Z. Fraenkel, J. Harder, T. Hemmick, R. Hutter, B. Jacak, J. Kamin, A. Kozlov, M. Naglis, P. O'Connor, R. Pisani, V. Radeka, I. Ravinovich, T. SakaguchiD. Sharma, A. Sickles, S. Stoll, I. Tserruya, B. Yu, C. Woody

Research output: Contribution to journalArticlepeer-review

Abstract

A new hadron blind detector (HBD) for electron identification in high density hadron environment has been installed in the PHENIX experiment at RHIC in the fall of 2006. The HBD will identify low momentum electron-positron pairs to reduce the combinatorial background in the e+e- mass spectrum, mainly in the region below 1 GeV/c2. The HBD is a windowless proximity-focusing Cherenkov detector with a radiator length of 50 cm, a CsI photocathode and three layers of gas electron multipliers (GEM). Pure CF4 is used as a radiator and a detector gas. This proceeding describes the construction details and the expected performance of the HBD.

Original languageEnglish (US)
Article numberS77
Pages (from-to)S701-S704
JournalJournal of Physics G: Nuclear and Particle Physics
Volume34
Issue number8
DOIs
StatePublished - Aug 1 2007
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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