Scintillation ring hodoscope with WLS fiber readout

被引：23
|
作者：
Ivashkin, AP
Kudenko, YG
Mineev, OV
Imazato, J
机构：
[1] RUSSIAN ACAD SCI,INST NUCL RES,MOSCOW 117312,RUSSIA
[2] KEK NAT LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1997年 / 394卷 / 03期
关键词：
WLS fibers; ring hodoscope;
D O I：
10.1016/S0168-9002(97)00657-8
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A simple tracking system for measuring the K+ decay vertex along the beam axis in the T-Violation Experiment (E246) at KEK is described. It consists of 32 grooved BC408 plastic scintillator rings with embedded Y11 wavelength-shifting (WLS) optical fibers. Both ends of each multi-clad WLS fiber are directly viewed by a green-extended photomultiplier. Light yield of 46 photoelectrons per minimum ionizing particle in the 5 mm thick ring has been achieved. This configuration gives 1.7 mm position resolution determined purely by the 6 mm width of each ring. Time resolution of 1.0 ns and detection efficiency of 98.4% were obtained.
引用
收藏
页码：321 / 331
页数：11
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