TOP counter prototype R&D

被引：12
|
作者：
Inami, K. [1 ]
机构：
[1] Nagoya Univ, Dept Phys, Chikusa Ku, Nagoya, Aichi 4648602, Japan
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 639卷 / 01期
基金：
日本学术振兴会;
关键词：
Cherenkov; MCP-PMT; Quartz; Precise timing; PROPAGATION CHERENKOV COUNTER; MCP-PMT; MULTIANODE PMT; CROSS-TALK; PS;
D O I：
10.1016/j.nima.2010.09.138
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We have been developing a Cherenkov ring-imaging counter, named TOP counter, as a particle-identification device of the Belle-II detector for the super B-factory at KEK. In this presentation, we show the R&D status of the TOP counter prototype. We performed a beam test using 2 m long quartz radiator and MCP-PMTs, and evaluated the number of detected photons, time resolution and chromatic effects. We developed a square-shape MCP-PMT with Hamamatsu photonics, so as to obtain a sufficient lifetime under the Belle-II environment. We improved the lifetime of the quantum efficiency by changing the internal structure and production process, and then obtained a lifetime of > 350 mC/cm(2). (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：298 / 301
页数：4
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