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The CMS ECAL Laser Monitoring System

Bornheim, Adolf (2006) The CMS ECAL Laser Monitoring System. In: Calorimetry in high energy physics: XII international conference. AIP Conference Proceedings. No.867. American Institute of Physics , Melville, NY, pp. 408-414. ISBN 978-0-7354-0364-2.

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The CMS detector at LHC will be equipped with a high precision lead tungstate electromagnetic calorimeter. To ensure the stability of the calorimetric response at a level of a few per mille, every channel of the detector is monitored with a laser system. This system allows to correct for fluctuations in the detector response with high precision, in particular the expected radiation induced changes of the crystal transparency, which are on the level of several per cent at nominal luminosity. Here we report results from long term tests of the system on fully equipped supermodules of the CMS ECAL which are performed after the final step of the construction but before insertion of the modules in CMS. The in‐situ monitoring strategy for the CMS ECAL is discussed in detail and the performance of the full monitoring procedure as achieved in the test beam is illustrated.

Item Type:Book Section
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Bornheim, Adolf0000-0002-0128-0871
Additional Information:© 2006 American Institute of Physics. I would like to thank the entire ECAL collaboration for their outstanding effort, R.-Y. Zhu and the CALTECH team for their superb work on the laser system and the organizers of the XII International Conference on Calorimetry in High Energy Physics at Chicago.
Series Name:AIP Conference Proceedings
Issue or Number:867
Record Number:CaltechAUTHORS:20160504-142707137
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Official Citation:The CMS ECAL Laser Monitoring System Bornheim, Adolf and CMS ECAL Collaboration, AIP Conference Proceedings, 867, 408-414 (2006), DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66663
Deposited By: Tony Diaz
Deposited On:04 May 2016 22:11
Last Modified:11 Nov 2021 00:01

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