Title :
An automated system to control the polarization voltage of silicon detectors
Author :
Altieri, S. ; Fossati, F. ; Lanza, A. ; Pinelli, T.
Author_Institution :
Dipartimento di Fisica Nucl. e Teorica, Istituto Nazionale di Fisica Nucl., Pavia, Italy
fDate :
4/1/1995 12:00:00 AM
Abstract :
A remote controlled system to maintain polarization voltage across a silicon detector within a user defined window is described. The system regulates silicon bias voltage, caused by increased leakage current due to radiation damage, by switching external resistors to maintain a constant voltage drop across the bias load resistor, independent of leakage current. This Z80 microprocessor based system links with the host computer by a RS-232 serial port. The voltage resolution of the system is less than 0.2 V in the worst case
Keywords :
counter accessories; high energy physics instrumentation computing; radiation effects; silicon radiation detectors; 0.2 V; RS-232 serial port; Si bias voltage; Si detectors; Z80 microprocessor based system; automated system; bias load resistor; constant voltage drop; external resistors; host computer; leakage current; polarization voltage; radiation damage; remote controlled system; user defined window; voltage resolution; Automatic voltage control; Circuits; Control systems; Delay; Detectors; Leakage current; Polarization; Resistors; Silicon; Voltage control;
Journal_Title :
Nuclear Science, IEEE Transactions on
