Optical properties of the DIRC fused silica Cherenkov radiator

被引：32

作者：

Cohen-Tanugi, J ^{[1
]}

Convery, M ^{[1
]}

Ratcliff, B ^{[1
]}

Sarazin, X ^{[1
]}

Schwiening, J ^{[1
]}

Va'vra, J ^{[1
]}

机构：

[1] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2003年 / 515卷 / 03期

关键词：

Cherenkov detector; particle identification system; BABAR experiment;

D O I：

10.1016/j.nima.2003.07.026

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The DIRC is a new type of Cherenkov detector that is successfully operating as the hadronic particle identification system for the BABAR experiment at SLAC. The fused silica bars that serve as the DIRC's Cherenkov radiators must transmit the light over long optical pathlengths with a large number of internal reflections. This imposes a number of stringent and novel requirements on the bar properties. This note summarizes a large amount of R&D that was performed both to develop specifications and production methods and to determine whether commercially produced bars could meet the requirements. One of the major outcomes of this R&D work is an understanding of methods to select radiation hard and optically uniform fused silica material. Others include measurement of the wavelength dependency of the internal reflection coefficient, and its sensitivity to surface contaminants, development of radiator support methods, and selection of good optical glue. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：680 / 700

页数：21

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