AGING EFFECTS OBSERVED IN THE CERN OMEGA RICH

被引：10

作者：

MARTENS, K

ENGELFRIED, J

FALLER, F

LENNERT, P

MICHAELS, R

MULLER, U

RIESEBERG, H

SIEBERT, HW

WALDER, G

机构：

[1] UNIV MAINZ,INST KERNPHYS,W-6500 MAINZ,GERMANY

[2] MAX PLANCK INST NUCL PHYS,W-6900 HEIDELBERG 1,GERMANY

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1994年 / 343卷 / 01期

关键词：

D O I：

10.1016/0168-9002(94)90560-6

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report on the new drift chambers of the Omega RICH used in the hyperon beam experiment WA89 at the CERN-SPS and in the heavy-ion experiment WA94. After four data-taking runs in 1990/91/92 it was found that the anode wires of the chambers were coated with a smooth layer of 1 mum thickness. Pulse heights were found to be reduced considerably with respect to those observed on new wires. Washing with alcohol and water in an ultrasonic bath restored the original pulse heights. In 1993 the RICH is running again in experiment WA89.

引用

页码：258 / 262

页数：5

共 2 条

[1] THE RICH COUNTER IN THE CERN HYPERON BEAM EXPERIMENT [J].

BEUSCH, W ;

ENGELFRIED, J ;

GERASSIMOV, SG ;

HEINTZE, J ;

KLUTH, S ;

LENNERT, P ;

LJUNGFELT, S ;

MARTENS, K ;

MICHAELS, R ;

MULLER, U ;

RIESEBERG, H ;

SIEBERT, HW ;

WALDER, G .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1992, 323 (1-2) :373-379

[2] THE OMEGA RICH [J].