Novel photon detectors for focusing DIRC prototype

被引：22

作者：

Field, C ^{[1
]}

Hadig, T ^{[1
]}

Jain, M ^{[1
]}

Leith, DWGS ^{[1
]}

Mazaheri, G ^{[1
]}

Ratcliff, BN ^{[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 | 2004年 / 518卷 / 1-2期

关键词：

photodetectors; Cherenkov detectors; RICH;

D O I：

10.1016/j.nima.2003.11.086

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 [仪器科学与技术]; 080401 [精密仪器及机械]; 081102 [检测技术与自动化装置];

摘要：

For present BaBar DIRC, the Cherenkov angular resolution is dominated by three contributions-the chromatic error, bar thickness and pixel size. We have designed the Focusing DIRC prototype, which potentially can reduce the chromatic error by a precise timing in the range of 50-100 ps per photon, and the bar thickness by a focusing mirror. This paper describes two novel photon detectors, which are candidates for this type of concept: Hamamatsu 64-channel multi-anode Flat Panel H-8500 PMTs and Burle 64-channel micro-channel plate MCP-PMTs. The detectors were tested with a PiLas laser diode light pulse providing 35 ps FWHM timing resolution. A single-photon timing resolution of (1) sigma similar to 120-140 ps was achieved with the Hamamatsu PMTs, and (2) sigma similar to 55 ps with the Burle MCP-PMTs. To achieve the good timing resolution results, we have developed a new fast amplifier and a constant-fraction discriminator. We have also developed a computer-controlled scanning setup, which allows a detailed study of the relative efficiency response to single photons. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：565 / 568

页数：4

共 5 条

[1]

HADIG T, 2002, P 3 WORKSH HIGH LUM

[2]

Imaging rings in Ring Imaging Cherenkov counters [J].

Ratcliff, BN .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 502 (01) :211-221

[3]

RATCLIFF BN, 1993, SLACPUB6047

[4]

The DIRC detector at the SLAC B-factory PEP-II: operational experience and performance for physics application [J].

Schwiening, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 502 (01) :67-75

[5]

Novel photon detectors for RICH applications [J].

Va'vra, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 502 (01) :172-182

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