Title :
The High Voltage Protection Boards for the RICH Detectors of the LHCb Experiment
Author :
Arnaboldi, Claudio ; Bellunato, Tito ; Gobbo, Paola ; Perego, Davide Luigi ; Pessina, Gianluigi
Author_Institution :
Dipt. di Fis., Univ. di Milano-Bicocca, Milan, Italy
Abstract :
We present the protection system for the monitoring circuitry of the 20 kV high-voltage bias for the Hybrid Photon Detectors of the Ring Imaging Cherenkov detectors of the LHCb experiment. The protection system buffers the voltage lines, attenuated by about 12700 V/V in normal operating conditions, and limits the output voltage excursion to the ADCs of the monitoring system to a safe range (between -2.5 V and +5 V) in case of discharge. The circuit has been designed and tested to be radiation tolerant under the expected working conditions of LHCb. Results show that the protection boards are fully adequate for the whole LHCb lifetime.
Keywords :
Cherenkov counters; analogue-digital conversion; nuclear electronics; photodetectors; ADC; LHCb experiment; RICH detectors; Ring Imaging Cherenkov detectors; electronic circuit monitoring; high voltage protection board system; hybrid photon detectors; operating conditions; output voltage excursions; voltage 20 kV; Arresters; Attenuators; Circuit testing; Condition monitoring; Detectors; Electronic circuits; Employee welfare; Surge protection; Test equipment; Voltage; Analog circuits; circuit reliability; electronic circuits; radiation hardness; test equipment;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2009.2025947
