Light-to-light readout system of the CMS electromagnetic calorimeter

For the CMS experiment at the Large Hadron Collider at CERN, an 80 000-crystal electromagnetic calorimeter will measure electron and photon energies with high precision over a dynamic range of roughly 16 bits. The readout electronics will be located directly behind the crystals, and must survive a t...

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Bibliographic Details
Main Authors: Denes, P., Bussat, J.M., Lustermann, W., Mathez, H., Pangaud, P., Walder, J.P.
Format: Conference Proceeding
Language:English
Subjects:
Collision mitigation
Dynamic range
Electromagnetic measurements
Electrons
Energy measurement
Large Hadron Collider
Optical fiber communication
Photon collider
Photonic crystals
Readout electronics
Online Access:Request full text
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Summary:For the CMS experiment at the Large Hadron Collider at CERN, an 80 000-crystal electromagnetic calorimeter will measure electron and photon energies with high precision over a dynamic range of roughly 16 bits. The readout electronics will be located directly behind the crystals, and must survive a total dose of up to 2/spl times/10/sup 4/ Gy along with 5/spl times/10/sup 13/ n/cm/sup 2/. A readout chain consisting of a custom wide-range acquisition circuit, commercial ADC and custom optical link for each crystal is presently under construction. An overview of the design is presented, with emphasis on the large-scale fiber communication system.
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2000.949885