TY - GEN
T1 - An intelligent HV control and monitoring system for the PHENIX Hadron Blind Detector at the relativistic heavy ion collider
AU - Proissl, M.
AU - Azmoun, B.
AU - Boose, S.
AU - Durham, M.
AU - Hemmick, T.
AU - Milov, A.
AU - Polizzo, S.
AU - Purschke, M.
AU - Woody, C.
PY - 2010
Y1 - 2010
N2 - The PHENIX Hadron Blind Detector (HBD) is a high-performance Cherenkov counter used to detect electrons in relativistic heavy ion collisions at RHIC. A High Voltage Control and Monitoring System (HVC) was developed to provide optimal control over the detector for maximal performance and protection against damage from possible discharges. The HVC comprises several novel hardware components including a voltage divider board and trip detection/protection boards for each power supply module, while actual control of the HV is maintained by a software suite which incorporates Modern Optimal Control Theory and Artificial Intelligence concepts. The software suite is made up of several concurrently operating subsystems, which periodically processes measurements fed back from the HV mainframe, the HBD gas pressure (P) and temperature (T) sensors, analyzes the GEM module behavior in reference to its performance over time, determines a custom response and modifies the HV when necessary. Since the HBD gain is very sensitive to P/T fluctuations, the HVC automatically modifies the GEM/Mesh voltage accordingly in order to keep the gain variations within a nominal operating range of / 10%. Both hardware and software components of the HVC will be described, along with the successful performance results throughout the commissioning pp Run-9 and the HBD's final and most important AuAu Run-10.
AB - The PHENIX Hadron Blind Detector (HBD) is a high-performance Cherenkov counter used to detect electrons in relativistic heavy ion collisions at RHIC. A High Voltage Control and Monitoring System (HVC) was developed to provide optimal control over the detector for maximal performance and protection against damage from possible discharges. The HVC comprises several novel hardware components including a voltage divider board and trip detection/protection boards for each power supply module, while actual control of the HV is maintained by a software suite which incorporates Modern Optimal Control Theory and Artificial Intelligence concepts. The software suite is made up of several concurrently operating subsystems, which periodically processes measurements fed back from the HV mainframe, the HBD gas pressure (P) and temperature (T) sensors, analyzes the GEM module behavior in reference to its performance over time, determines a custom response and modifies the HV when necessary. Since the HBD gain is very sensitive to P/T fluctuations, the HVC automatically modifies the GEM/Mesh voltage accordingly in order to keep the gain variations within a nominal operating range of / 10%. Both hardware and software components of the HVC will be described, along with the successful performance results throughout the commissioning pp Run-9 and the HBD's final and most important AuAu Run-10.
UR - https://www.scopus.com/pages/publications/79960323065
U2 - 10.1109/NSSMIC.2010.5873884
DO - 10.1109/NSSMIC.2010.5873884
M3 - Conference contribution
AN - SCOPUS:79960323065
SN - 9781424491063
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 865
EP - 870
BT - IEEE Nuclear Science Symposuim and Medical Imaging Conference, NSS/MIC 2010
T2 - 2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010
Y2 - 30 October 2010 through 6 November 2010
ER -