A study of proximity focusing RICH with aerogel radiator

被引：0

作者：

Adachi, I. ^{[1
]}

Fujita, K.

Fukushima, T.

Gorisek, A.

Hayashi, D.

Iijima, T.

Ikado, T.

Ishikawa, T.

Kawai, H.

Korpar, S.

Kozakai, Y.

Krizan, P.

Kuratani, A.

Mazuka, Y.

Nakagawa, T.

Nishida, S.

Ogawa, S.

Pestotnik, R.

Seki, T.

Sumiyoshi, T.

Tabata, M.

Unno, Y.

机构：

[1] KEK, IPNS, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan

[2] Nagoya Univ, Nagoya, Aichi, Japan

[3] Chiba Univ, Chiba, Japan

[4] Josef Stefan Inst, Ljubljana, Slovenia

[5] Tokyo Metropolitan Univ, Tokyo 158, Japan

[6] Univ Maribor, Fac Chem & Chem Engn, Maribor, Slovenia

[7] Univ Ljubljana, Fac Math & Phys, Ljubljana 61000, Slovenia

[8] Toho Univ, Funabashi, Chiba 274, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2007年 / 580卷 / 02期

基金：

日本学术振兴会;

关键词：

aerogel; Cherenkov radiator; particle identification; Belle;

D O I：

10.1016/j.nima.2007.06.101

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Proximity focusing RICH based on an aerogel Cherenkov radiator has been developed for a new particle identifier in the Belle upgrade. To further improve the detector performance, a new concept for Cherenkov ring imaging has been introduced, where multiple aerogel layers with different indices are accumulated to increase observed photoelectrons without making the single photon resolution worse. By constructing a prototype counter, this idea was validated in a test beam experiment, and we achieved 5.5 sigma pi/K separation at 4 GeV/c. In addition, the potential of the time-of-flight capabilities to detect time information of Cherenkov photons, where a microchannel plate PMT is employed as a photodetector, was examined in a beam test, and excellent performance of this technique was obtained. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1042 / 1045

页数：4

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