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Proceedings Paper

Gigabit optical link test system for RPC muon trigger in the CMS experiment
Author(s): Krzysztof T. Pozniak; Mariusz Ptak; Ryszard S. Romaniuk; Krzysztof Kierzkowski; Ignacy M. Kudla; Michal Pietrusinski; Grzegorz Wrochna; Kukka Banzuzi; Donatella Ungaro
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Paper Abstract

High-energy experiments like Atlas, Alice, CMS or LHCb at the LHC accelerator at CERN will be performed in very harsh conditions for electronic equipment. High radiation level in the experimental halls causes that commonly available electronic devices do not work properly. A specialized optical transmitter--GOL (Gigabit Optical Link) has been designed at CERN to meet the radiation environment requirements. The design goal was to supply device resistant to high radiation, fast, and being able to transmit data through optical links. Transmitter was designed considering two important characteristics of its work environment: high radiation level and gigabit transmission speed. Proper internal structure of GOL chip allows to minimize single event upsets (SEU) caused by ionizing radiation. Unfortunately, the design does not elimiate SEU completely. This paper presents testing system for the GOL. Its main purpose is testing new prototypes of optical fiber gigabit transmission systems using GOL transmitter and commercial receiver components. The system will be implemented in the CMS experiment for control purposes. It will monitor optical link and transmission quality in the RPC detector. System consits of hardware layer and software layer. Hardware layer, based on Latera FPGA programmable devices. Software has been developed using C++ environment integrated with VME controller hardware.

Paper Details

Date Published: 24 October 2003
PDF: 10 pages
Proc. SPIE 5125, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments, (24 October 2003); doi: 10.1117/12.531572
Show Author Affiliations
Krzysztof T. Pozniak, Warsaw Univ. of Technology (Poland)
Mariusz Ptak, Warsaw Univ. of Technology (Poland)
Ryszard S. Romaniuk, Warsaw Univ. of Technology (Poland)
Krzysztof Kierzkowski, Warsaw Univ. (Poland)
Ignacy M. Kudla, Warsaw Univ. (Poland)
Michal Pietrusinski, Warsaw Univ. (Poland)
Grzegorz Wrochna, Soltan Institute for Nuclear Studies (Poland)
Kukka Banzuzi, Univ. of Helsinki (Finland)
Donatella Ungaro, Univ. of Helsinki (Finland)


Published in SPIE Proceedings Vol. 5125:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments
Ryszard S. Romaniuk; Krzysztof T. Pozniak, Editor(s)

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