A hadron blind detector for the PHENIX experiment at RHIC

I. Tserruya, B. Azmoun, C. Woody, S. Sawada, S. Yokkaichi, A. Milov, T. Gunji, H. Hamagaki, M. Inuzuka, T. Isobe, Y. Morino, S. Oda, K. Ozawa, S. Saito, T. Sakaguchi, Y. Yamaguchi, Z. Fraenkel, A. Kozlov, M. Naglis, I. RavinovichL. Shekhtman

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


A Hadron Blind Detector (HBD) is being developed for an upgrade of the PHENIX experiment at RHIC. The HBD is a windowless Cherenkov detector, operated with pure CF 4 in a special proximity focus configuration. The detector consists of a 50cm long radiator, directly coupled to a triple GEM detector which has a Csl photocathode evaporated on the top surface of the upper-most GEM foil, and a pad readout at the bottom of the GEM stack. Detailed studies of the detector performance, including hadron rejection, figure of merit, N 0, number of photoelectrons and efficiency are presented. These studies include measurements performed with a UV lamp, an 55Fe x-ray source and an 241Am alpha source. Results will also be given on aging studies of the GEM foils and the CsI photocathode in pure CF 4.

Original languageEnglish
Article numberN25-1
Pages (from-to)1137-1141
Number of pages5
JournalIEEE Nuclear Science Symposium Conference Record
Publication statusPublished - 2004
Externally publishedYes
Event2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy
Duration: Oct 16 2004Oct 22 2004

All Science Journal Classification (ASJC) codes

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging


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