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Test of an array of CsI(Tl) crystal towers for a low or medium energy e{sup +}e{sup {minus}} collider calorimeter

Conference ·
OSTI ID:10108929
Energy and position resolution results of a test of an array of CsI(Tl) crystal towers in an e{sup {minus}}/{pi}{sup {minus}} beam (120 to 400 MeV) at TRIUMF are presented. The array was designed to study the effects of longitudinal and transverse crystal segmentation on energy and position resolution, and background rejection. The author also studied a wavelength-shifter and multi-photodiode readout system suitable for use in an electromagnetic CsI calorimeter in a detector at low and medium energy, high-luminosity e{sup +}e{sup {minus}} storage rings. Energy resolution of (1.69 {+-} 0.08)%/{radical}E and (1.83 {+-} 0.05)%/{radical}E were obtained for two different crystal tower configurations. Position resolution of 6.5 (9.0) mm was obtained at 300 (120) MeV for four 4 x 4 cm{sup 2}, 4 radiation length CsI crystals.
Research Organization:
Stanford Linear Accelerator Center, Menlo Park, CA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC03-76SF00515
OSTI ID:
10108929
Report Number(s):
SLAC-PUB--6701; CONF-930761--1; ON: DE95006068
Country of Publication:
United States
Language:
English