Author/Authors :
Moriya، نويسنده , , Toru and Tokanai، نويسنده , , Fuyuki and Okazaki، نويسنده , , Keisuke and Sakurai، نويسنده , , Hirohisa and Gunji، نويسنده , , Shuichi and Kawabata، نويسنده , , Hironobu and Sohtome، نويسنده , , Takayuki and Sumiyoshi، نويسنده , , Takayuki and Sugiyama، نويسنده , , Hirioyuki and Okada، نويسنده , , Teruyuki and Ohishi، نويسنده , , Noboru and Kishimoto، نويسنده , , Syunji، نويسنده ,
Abstract :
We have been developing gaseous photomultiplier tubes (PMTs) with a bialkali photocathode combined with micropattern gas detectors (MPGDs). The sensitivity of a PMT is described in terms of its quantum efficiency (QE). The QE is very important in many experiments, particularly when dealing with low photon statistics. A concise QE measurement system has been developed to evaluate the characteristics of a sealed gaseous PMT with a bialkali photocathode. This QE measurement system consists of a Xe arc lamp source, reflective optics and filters, a monochromator, and a reference Si photodiode detector. Using the system, we evaluated the QE, gain, and long-term stability of the gaseous PMT. Here, we report the results of our evaluation.
