AGING EFFECTS OBSERVED IN THE CERN OMEGA RICH

Authors
MARTENS K ENGELFRIED J FALLER F LENNERT P MICHAELS R MULLER U RIESEBERG H SIEBERT HW WALDER G
Citation
K. Martens et al., AGING EFFECTS OBSERVED IN THE CERN OMEGA RICH, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 343(1), 1994, pp. 258-262
Citations number
2
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
343
Issue
1
Year of publication
1994
Pages
258 - 262
Database
ISI
SICI code
0168-9002(1994)343:1<258:AEOITC>2.0.ZU;2-2
Abstract
We report on the new drift chambers of the Omega RICH used in the hype ron beam experiment WA89 at the CERN-SPS and in the heavy-ion experime nt WA94. After four data-taking runs in 1990/91/92 it was found that t he anode wires of the chambers were coated with a smooth layer of 1 mu m 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 th e RICH is running again in experiment WA89.