The aerogel Ring Imaging Cherenkov system at the Belle II spectrometer

被引：9

作者：

Pestotnik, R. ^{[1
]}

Adachi, I. ^{[2
,3
]}

Dolenec, R. ^{[4
]}

Hataya, K. ^{[5
]}

Iori, S. ^{[6
]}

Iwata, S. ^{[5
]}

Kakuno, H. ^{[5
]}

Kataura, R. ^{[7
]}

Kawai, H. ^{[8
]}

Kindo, H. ^{[3
]}

Kobayashi, T. ^{[7
]}

Korpar, S. ^{[1
,9
]}

Krizan, P. ^{[1
,4
]}

Kumita, T. ^{[5
]}

Mrvar, M. ^{[1
]}

Nishida, S. ^{[2
,3
]}

Ogawa, K. ^{[6
,7
]}

Ogawa, S.

Santelj, L. ^{[2
]}

Sumiyoshi, T. ^{[5
]}

Tabata, M. ^{[8
]}

Yonenaga, M. ^{[5
]}

Yusa, Y. ^{[7
]}

机构：

[1] Jozef Stefan Inst, Ljubljana, Slovenia

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

[3] SOKENDAI Grad Univ Adv Sci, Tsukuba, Ibaraki, Japan

[4] Univ Ljubljana, Ljubljana, Slovenia

[5] Tokyo Metropolitan Univ, Hachioji, Tokyo, Japan

[6] Toho Univ, Funabashi, Chiba, Japan

[7] Niigata Univ, Niigata, Japan

[8] Chiba Univ, Chiba, Japan

[9] Univ Maribor, Maribor, Slovenia

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2017年 / 876卷

关键词：

Proximity focusing RICH with an aerogel radiator; Particle identification; Hybrid avalanche photo detector; PROXIMITY FOCUSING RICH; RADIATOR; GEANT4; HAPD;

D O I：

10.1016/j.nima.2017.04.043

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In the forward end-cap of the Belle II spectrometer, a proximity focusing Ring Imaging Cherenkov counter with an aerogel radiator will be installed. The detector will occupy a limited space inside solenoid magnet with longitudinal field of 1.5 T. It will consist of a double layer aerogel radiator, an expansion volume and a photon detector. 420 Hamamatsu hybrid avalanche photo sensors with 144 channels each will be used to read out single Cherenkov photons with high efficiency. More than 60,000 analog signals will be digitized and processed in the front end electronics and send to the unified experiment data acquisition system. The detector components have been successfully produced and are now being installed in the spectrometer. Tested before on the bench, they are currently being installed in the mechanical frame. Part of the detector have been commissioned and connected to the acquisition system to register the cosmic ray particles. The first preliminary results are in accordance with previous expectations. We expect an excellent performance of the device which will allow at least a 4s separation of pions from kaons in the experiment kinematic region from 0.5 GeV/c to 4 GeV/c. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：265 / 268

页数：4

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