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

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1995年 / 367卷 / 1-3期

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

页码：372 / 376

页数：5

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