Proposal for a Hadron Blind Detector for PHENIX
Abstract
A Hadron Blind Detector (HBD) is proposed as upgrade of the PHENIX detector at RHIC, BNL. The HBD will allow the measurement of low-mass e+e- pairs from the decay of the light vector mesons rho, omega, phi and the low-mass continuum in Au-Au collisions at energies up to sqrt{s_{NN}}= 200 GeV. From MC simulations and general considerations, the HBD has to identify electrons with very high efficiency (> 90%), double hit recognition better than 90%, moderate pion rejection factor of ~200 and radiation budget of the order of 1% of a radiation length. The first choice under study is a windowless Cherenkov detector, operated with pure CF4, in a special proximity focus configuration with a CsI photocathode and a multistage GEM amplification element.
Cite
@article{arxiv.physics/0307101,
title = {Proposal for a Hadron Blind Detector for PHENIX},
author = {A. Kozlov and C. Aidala and B. Azmoun and Z. Fraenkel and T. Hemmick and B. Khachaturov and A. Milov and I. Ravinovich and I. Tserruya and S. Stoll and C. Woody and S. Zhou},
journal= {arXiv preprint arXiv:physics/0307101},
year = {2007}
}
Comments
5 pages, 3 figures Presented at the Fourth International Workshop on Ring Imaging Cherenkov Detectors (RICH 2002), Pylos, Greece, June 5-10, 2002