The Control System for the CMS Strip Tracking Detector

Details The Control System for the CMS Strip Tracking Detector The Control System for the CMS Strip Tracking Detector

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008apsp.conf..771f&link_type=abstract

ASTROPARTICLE, PARTICLE AND SPACE PHYSICS, DETECTORS AND MEDICAL PHYSICS APPLICATIONS. Proceedings of the 10th Conference. Held

Physics

Medical Physics

Scientific paper

The Tracker of the CMS silicon strip tracking detector covers a surface of 206 m2. 9648128 channels are available on 75376 APV front-end chips on 15232 modules, built of 24328 silicon sensors. The power supply of the detector modules is split up in 1944 power supplies with two low voltage for front end power and two high voltage channels each for the bias voltage of the silicon sensors. In addition 356 low voltage channels are needed to power the control chain. The tracker will run at -20°C at low relative humidity for at least 10 years. The Tracker Control System handles all interdependencies of control, low and high voltages, as well as fast ramp downs in case of higher than allowed temperatures or currents in the detector and experimental cavern problems. This is ensured by evaluating 104 power supply parameters, 103 information from Tracker Safety System and 105 information from the tracker front end.

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