Silica aerogel cherenkov counter for the KEK B-factory experiment

Authors
Sumiyoshi, T Adachi, I Enomoto, R Iijima, T Suda, R Leonidopoulos, C Marlow, DR Prebys, E Kawabata, R Kawai, H Ooba, T Nanao, M Suzuki, K Ogawa, S Murakami, A Khan, MHR
Citation
T. Sumiyoshi et al., Silica aerogel cherenkov counter for the KEK B-factory experiment, NUCL INST A, 433(1-2), 1999, pp. 385-391
Citations number
13
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
433
Issue
1-2
Year of publication
1999
Pages
385 - 391
Database
ISI
SICI code
0168-9002(19990821)433:1-2<385:SACCFT>2.0.ZU;2-2
Abstract
Low-refractive-index silica aerogel is a convenient radiator for threshold- type Cherenkov counters, which are used for particle identification in high -energy physics experiments. For the BELLE detector at the KEK B-Factory we have produced about 2 m(3) of hydrophobic silica aerogels of n = 1.01-1.03 using a new production method. The particle identification capability of t he aerogel Cherenkov counters was tested and 3 sigma pion/proton separation has been achieved at 3.5 GeV/c. Radiation hardness of the aerogels was con firmed up to 9.8 Mrad. The Aerogel Cherenkov counter system (ACC) was succe ssfully installed in the BELLE just before this conference. (C) 1999 Elsevi er Science B.V. All rights reserved.