Author/Authors :
Ahmad، نويسنده , , S. and Beilin، نويسنده , , A.F. and Belyanchenko، نويسنده , , S.A. and Blinnikov، نويسنده , , Yu.S. and Bonner، نويسنده , , B. and Grigoriev، نويسنده , , V.A. and Gusev، نويسنده , , Yu.I. and Dukhor، نويسنده , , S.G. and Kaplin، نويسنده , , V.A. and Karakash، نويسنده , , A.I. and Kleshneva، نويسنده , , T.Yu. and Levchenko، نويسنده , , L.A. and Lukyanov، نويسنده , , V.A. and Maklyaev، نويسنده , , E.F. ، نويسنده ,
Abstract :
Future experiments on RHIC and LHC require the performance of photodetectors with stable operation in strong magnetic fields, 0.5 T for the STAR (RHIC) Time of Flight system (TOF) and more than 3 T for the CMS (LHC) electromagnetic calorimeter. Such photodetectors have to possess a good energy and time resolution, for TOF measurements less than 100 ps [1] simultaneously being radiation hard up to some Mrad. Fine mesh dynode proximity photomultiplier tubes FMPMT developed and produced in recent years by Hamamatsu are the most promising detectors for the above specified goals. Different kinds of PMT were tested by some experimental groups in axial magnetic field up to 1.5 T [2–4]. The obtained PMT time resolution in beam test together with Bicron scintillator was better than 100 ps [1].
Keywords :
Relativistic heavy ions , Colliders , Calorimeters , Photomultiplier tubes , RHIC (STAR) , nuclear physics , Photodetection
