Title :
A low DC drift read-out system for a large mass bolometric detector
Author :
Alessandrello, A. ; Brofferio, C. ; Bucci, C. ; Camin, D.V. ; Cremonesi, O. ; Giuliani, A. ; Nucciotti, A. ; Pavan, M. ; Pessina, G. ; Previtali, E. ; Sablich, G.
Author_Institution :
Istituto Nazionale di Fisica Nucl., Milan, Italy
Abstract :
We present a read-out solution for a bolometric detector of large mass. It consists of a voltage-sensitive preamplifier, having very low series and parallel input noise, thanks to the use of a pair of selected silicon JFETs at the input. Very good electrical characteristics were obtained. DC power supply rejection ratio, thermal drift of input offset voltage and input leakage current are minimized by using novel circuit solutions. Parallel noise behavior was also investigated using a new measurement method capable to be sensitive to shot noise generated by very small currents (tens of fA)
Keywords :
bolometers; detector circuits; leakage currents; nuclear electronics; particle detectors; preamplifiers; shot noise; DC power supply rejection ratio; Si JFET; electrical characteristics; input leakage current; input offset voltage; large mass bolometric detector; low DC drift read-out system; parallel noise behavior; shot noise; voltage-sensitive preamplifier; Circuit noise; Detectors; Electric variables; JFETs; Leakage current; Noise generators; Power supplies; Preamplifiers; Silicon; Voltage;
Conference_Titel :
Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-3534-1
DOI :
10.1109/NSSMIC.1996.591044
