Peter Križan, Ljubljana
HERA-B RICH photon detector
Status in 1996:
•TMAE and CsI have serious problems in long term operation at very high rates
•Hamamatsu just came out with the metail foil multianode PMTs of the R5900 series: first multianode PMTs with very little cross-talk
•Tested on the bench and in the beam: excellent performance ŕeasy decision  
ŕ NIM A394 (1997) 27