STUDIES OF HELIUM GAS-MIXTURES FOR LOW MASS TRACKING DETECTORS

被引：12

作者：

PLAYFER, SM

BERNET, R

EICHLER, R

STAMPFLI, B

机构：

[1] Institut für Mittelenergiephysik, ETH Zürich

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1992年 / 315卷 / 1-3期

关键词：

D O I：

10.1016/0168-9002(92)90753-Q

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Helium gas mixtures can improve tracking resolution for particles below 1 GeV/c because of the reduction in multiple scattering. We have measured the drift velocity and spatial resolution of several interesting mixtures including helium:DME and helium:CO2:isobutane. We discuss the advantages and disadvantages of using such a gas mixture for a detector at a B-meson factory, and conclude that helium:DME (80:20) and (70:30) mixtures will give significantly improved momentum resolution. The low drift velocity in such mixtures is a disadvantage in a high rate environment, but this is partly compensated by a low sensitivity to synchrotron radiation background.

引用

页码：494 / 501

页数：8

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