LEAD FLUORIDE - AN ULTRA-COMPACT CHERENKOV RADIATOR FOR EM CALORIMETRY

被引：81

作者：

ANDERSON, DF

KOBAYASHI, M

WOODY, CL

YOSHIMURA, Y

机构：

[1] NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 30032,JAPAN

[2] BROOKHAVEN NATL LAB,UPTON,NY 11973

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1990年 / 290卷 / 2-3期

关键词：

D O I：

10.1016/0168-9002(90)90553-I

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We have tested the material PbF2 and found that it is a Cherenkov radiator suitable for electromagnetic calorimetry. It has a density of 7.77 g/cm3, a radiation length of 0.93 cm, a refractive index of 1.8, and an optical cutoff at about 280 nm. An electromagnetic shower is 15% shorter longitudinally, and its apparent lateral extent has a 1 3 smaller radius in PbF2 than in BGO. We have measured 1300 photoelectrons per GeV of deposited energy and have set an upper limit on the energy resolution of 5.1%/√E. The first measurements show PbF2 to be much more radiation resistant than lead glass; also, when damaged, it almost fully recovers after a short exposure to UV light. © 1990.

引用

页码：385 / 389

页数：5

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