6533b86efe1ef96bd12cbe73
RESEARCH PRODUCT
Aging measurements with the gas electron multiplier (GEM)
Klaus DehmeltS. KapplerS. KapplerFabio SauliL. RopelewskiFrank SimonB. KetzerM Altunbassubject
PhysicsNuclear and High Energy PhysicsHealth Physics and Radiation EffectsLarge Hadron Colliderbusiness.industryPhysics::Instrumentation and DetectorsPhysicsResolution (electron density)DetectorRadiationTracking (particle physics)Nuclear physicsOpticsGas electron multiplierCOMPASS experimentddc:530Detectors and Experimental TechniquesbusinessInstrumentationdescription
Abstract Continuing previous aging measurements with detectors based on the Gas Electron Multiplier (GEM), we investigated a 31×31 cm 2 triple-GEM detector, as used in the small area tracking of the COMPASS experiment at CERN. With a detector identical to those installed in the experiment, long-term high-rate exposures to 8.9 keV X-ray radiation were performed to study its aging properties. In standard operation conditions, with Ar/CO2 (70:30) gas filling and operated at an effective gain of 8.5×103, no change in gain and energy resolution is observed after collecting a total charge of 7 mC / mm 2 , corresponding to seven years of normal operation. This observation confirms previous results demonstrating the relative insensitivity of GEM detectors to aging, even when manufactured with common materials.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-01-01 |