On the Radiation Damage of BTeV EMCAL Detector Unit
  Hamamatsu photomultiplier tubes (PMT) and various PMT window materials were exposed to gamma irradiation. Tests were performed with absorbed doses of 1 krad and 120 krad. Initial recommendations on PMT types to use in the BTeV electromagnetic calorimeter are stated. 
A. Borisevich (1), V. Dormenev (1), G. Drobychev (1), A. Fyodorov (1),   M. Korzhik (1), Y. Kubota (2), A. Lobko (1), A. Lop...