The ATLAS detector for the Large Hadron Collider at CERN of which construction has recently started, will study the products of proton collisions at energies of up to 14 TeV. One of its subdetectors ...is a high-resolution Muon Spectrometer designed to exploit the physics potentials of the collisions. It consists of 1206 Monitored Drift Tube (MDT) chambers, which will be built in 13 institutes of the ATLAS collaboration. Three Greek Universities (University of Athens, National Technical University and University of Thessaloniki) have undertaken the responsibility to construct 30 000 drift tubes of 1.67 length, to test them and to finally to build 128 BIS (Barrel Inner Small) chambers. Dedicated setups have been developed and automated at the National Technical University of Athens for the Quality Assurance and Quality Control (QA QC) procedures of the drift tubes. The QA QC tests include anode wire tension measurement, high voltage dark current measurement, anode wire displacement measurement and gas leak-rate measurement of the end-plugs and the cylinder. Up to now about 10 000 drift tubes have been tested.
Performance of the ring imaging Cherenkov detector of DELPHI Adam, W.; Albrecht, E.; Allen, D. ...
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment,
12/1995, Letnik:
367, Številka:
1
Journal Article, Conference Proceeding
Recenzirano
Odprti dostop
The general purpose particle detector DELPHI at the Large Electron Positron collider at CERN was built to give the complete information of each event. DELPHI uses ring imaging Cherenkov counters to ...provide hadron identification in most of the momentum range below 45 GeV/
c and over almost the full solid angle. Charged particles traversing gaseous and liquid fluorocarbon radiators create photons used for Cherenkov angle reconstruction. Some of the design features of the detector will be presented, with emphasis on the experience which was gained in the operation of these large systems. The hadron identification power of the ring imaging Cherenkov detector closely meets the main design values. Data processing and performance of the detector will be discussed using dimuon events collected during 1994. Pion rejection factors for kaon tagging will be shown.
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