Else Lytken
Professor
Gas gain stabilisation in the ATLAS TRT detector
Author
Summary, in English
The ATLAS (one of two general purpose detectors at the LHC) Transition Radiation Tracker (TRT) is the outermost of the three tracking subsystems of the ATLAS Inner Detector. It is a large straw-based detector and contains about 350,000 electronics channels. The performance of the TRT as tracking and particularly particle identification detector strongly depends on stability of the operation parameters with most important parameter being the gas gain which must be kept constant across the detector volume. The gas gain in the straws can vary significantly with atmospheric pressure, temperature, and gas mixture composition changes. This paper presents a concept of the gas gain stabilisation in the TRT and describes in detail the Gas Gain Stabilisation System (GGSS) integrated into the Detector Control System (DCS). Operation stability of the GGSS during Run-1 is demonstrated.
Department/s
- Particle and nuclear physics
Publishing year
2016-04-29
Language
English
Publication/Series
Journal of Instrumentation
Volume
11
Issue
4
Document type
Journal article
Publisher
IOP Publishing
Topic
- Subatomic Physics
Keywords
- Drift chambers
- Drift tubes
- Gaseous detectors
- Particle tracking detectors (Gaseous detectors)
- Proportional chambers etc
- Thin-gap chambers
- Transition radiation detectors
- Wire chambers MWPC
Status
Published
ISBN/ISSN/Other
- ISSN: 1748-0221