RADIATION HARDNESS OF THE PIBETA DETECTOR COMPONENTS

Fizika B (Zagreb)

E. FRLE¹  I. J. CAREY andD. POANI¹  T. A. CAMPBELL¹ 

关键词: long-term temporal stability of detector gain;    energy resolution anddetection efficiency;    radiation hardness;    radiation resistance;    radiation damage;   

DOI  :  

学科分类：物理（综合）

来源: Fizika B: a journal of experimental and theoretical physics

【 摘 要 】

We have examined long-term changes in signal amplitude gain, energy resolution anddetection efficiency of the active components of the PIBETA detector system. Beam-definingplastic scintillation counters were operated in a ~1MHz stoppedp⁺ beam for a period of 297 days, accumulatingradiation doses of up to 210⁶ rad. Detectors in the charged particletracking system - a pair of cylindrical multi-wire proportional chambers and a thinplastic scintillation barrel-shaped hodoscope array - were irradiated during the samerunning period with an average dose of ~ 4 10⁴ rad.Individual CsI (undoped crystal) calorimeter detectors received an average dose of ~  120 rad, mainly from photons, positrons and protonsoriginating from p⁺ hadronic interactions as well asfrom p⁺ and m⁺weak decays at rest in the active target.

【 授权许可】

Unknown