Author :
Ogawa, K. ; Sugahara, R. ; Takahasi, K. ; Tauchi, T. ; Takasaki, F. ; Awaji, N. ; Hayashii, H. ; Iwata, S. ; Ozaki, H. ; Suzuki, S. ; Gearhart, R.A. ; Miyamoto, A. ; Shimomura, T.
Abstract :
Lead glass counters made of wedge shaped blocks of SF6 were tested with positrons at SLAC. The beam energy ranged from 2-17.5 GeV. Energy dependence and beam position dependence of pulse height and energy resolution were studied with lead glass blocks of various lengths. The effect of a BK-7 light guide on pulse height was clearly observed. Degradation of the energy resolution due to aluminum absorbers of various lengths was investigated. A mesh type photomultiplier was also tested.
