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

页码：321 / 331

页数：11

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