Title :
The high voltage protection boards for the RICH detectors of LHC
Author :
Arnaboldi, C. ; Bellunato, T. ; Gobbo, P. ; Perego, D.L. ; Pessina, G.
Author_Institution :
dell´´Univ. di Milano-Bicocca, Milan
fDate :
Oct. 26 2007-Nov. 3 2007
Abstract :
We present the circuit protection system for the monitoring of the High Voltage bias for the Hybrid Photon Detectors (HPDs), of the Ring Imaging CHerenkov (RICH) detectors of LHCb. 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 ADC monitoring system to a safe range (between -2.5 V and +5 V) in case of discharge. The circuit is designed and tested to be radiation tolerant. The protection system has been fully characterized with radiation and temperature under the whole expected working conditions of LHCb. Results have shown that the developed protection boards are fully adequate for the whole LHCb lifetime.
Keywords :
Cherenkov counters; buffer circuits; high-voltage techniques; integrated circuit design; nuclear electronics; printed circuits; ADC monitoring system; HPD; Hybrid Photon Detectors; LHCb lifetime; RICH detectors; Ring Imaging Cherenkov detectors; buffer circuit configuration; circuit protection system; high voltage bias monitoring; high voltage protection boards; printed circuit boards; Arresters; Attenuators; Circuit testing; Detectors; Large Hadron Collider; Monitoring; Rails; Resistors; Surge protection; Voltage;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2007.4436423
