Paper | Title | Page |
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TUPD42 | Design and Experiences with the Beam Condition Monitor as Protection System in the CMS Experiment of the LHC | 398 |
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The Beam Condition Monitor (BCM) is used as protection system. In order to prevent damage to the pixel and tracker detectors it can trigger a beam dump when extremely high beam losses occur. The system consists of BCM1L with 4 diamonds per side at 1.8m away from the interaction point and BCM2 with 4 inner and 8 outer diamonds per side at 14.4m away from the interaction point. As detector material poly-crystalline CVD diamonds are used. The readout electronics is identical to the Beam Loss Monitor (BLM) system of the LHC. With cross calibration measurements a direct comparison between the BLM and the BCM systems is possible. The BCM system is therefore a transparent extension of the BLM system into the CMS cavern. The BCM2 system has been active in the beam abort system since the beginning of collisions at the LHC. Design and performance of the system during the run of the LHC so far will be presented.
*on behalf of the CMS BRM group. |
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Poster TUPD42 [0.736 MB] | |