The development of the optical discriminator

被引:1
|
作者
Atac, M
Charpak, G
Chipaux, R
Delbart, A
Derre, J
Giomataris, Y
Hill, T
Joseph, C
Kaplan, DM
Kochowski, C
Leros, N
Loucatos, S
Perroud, JP
Rebourgeard, P
Rosenberg, EI
机构
[1] CENS,DAPNIA,DSM,CEA,GIF SUR YVETTE,FRANCE
[2] ET,AT,CERN,GENEVA,SWITZERLAND
[3] UNIV LAUSANNE,CH-1015 LAUSANNE,SWITZERLAND
[4] NO ILLINOIS UNIV,DE KALB,IL
[5] IOWA STATE UNIV SCI & TECHNOL,AMES,IA
[6] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024
[7] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL
关键词
D O I
10.1016/0168-9002(95)00733-4
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
New results from the tests of the impact parameter discriminator by the RD30 Collaboration are presented. The device, based on the detection of Cherenkov light produced in a thin crystal, is able to cope with extremely high rates in the GHz range and sign tracks with non-zero impact parameter at a first trigger level. We report experimental results obtained with a sapphire shell surrounded by a liquid cladding compensating chromatic dispersion. An excellent signal to background ratio has been obtained and the sensitivity at low impact parameters reaches the requirements for efficient B-meson selection. The use of such a device for hyperon selection will also be discussed.
引用
收藏
页码:372 / 376
页数:5
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