학술논문
Electro-optical interfaces for CMS hadron calorimetry
Document Type
Conference
Author
Marchant, J.; Adams, M.; Akchurin, N.; Baumbaugh, A.; Baumbaugh, B.; Binkley, M.; Booke, M.; Chung, M.; Cushman, P.; Elias, J.; Freeman, J.; Hagopian, V.; Hansen, S.; Harrison, N.; Heering, A.; Johnson, K.; Los, S.; Lu, Q.; Onel, Y.; Reichanadter, M.; Reidy, J.; Rivetta, C.; Ronzhin, A.; Ruchti, R.; Tschirhart, R.; Wayne, M.
Source
1998 IEEE Nuclear Science Symposium Conference Record. 1998 IEEE Nuclear Science Symposium and Medical Imaging Conference (Cat. No.98CH36255) Nuclear science and medical imaging Nuclear Science Symposium, 1998. Conference Record. 1998 IEEE. 1:514-519 vol.1 1998
Subject
Language
ISSN
1082-3654
Abstract
The electro-optical interfaces for the central and endcap calorimeters of the CMS experiment at the CERN Large Hadron Collider are readout boxes that receive optical signals via fiber-optic waveguides from the calorimeter scintillator megatiles that comprise the active elements of the detector and decode these signals for energy measurement. The phototransducers housed within the readout boxes are Hybrid Photodiodes (HPDs) which detect and amplify the optical signals. Digitization is provided by preamplifiers or by QIE (Charge, Integration, and Encode) chips. Output signals am then transmitted from the readout boxes to Trigger/DAQ systems located off-detector. Design concepts and construction details are presented for the first pre-production-prototype readout boxes.