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