Title :
A front-end for an array of μ-bolometers for the study of the neutrino mass
Author :
Alessandrello, A. ; Brofferio, C. ; Cremonesi, O. ; Giuliani, A. ; Monfardini, A. ; Nucciotti, A. ; Pavan, M. ; Pessina, G. ; Previtali, E.
Author_Institution :
Dipt. di Fisica, Milan Univ., Italy
Abstract :
We present a very low noise front-end solution for the readout of an array composed of 10 μ-bolometers. The system consists of a cold JFET and a room temperature second stage. The optimization of the second stage feedback configuration allowed to minimize the overall noise figure. A very simple current generator having a large output impedance has been developed and is used for biasing the cold JFET
Keywords :
bolometers; circuit feedback; junction gate field effect transistors; neutrino detection; neutrino mass; nuclear electronics; readout electronics; μ-bolometers array; 293 K; cold JFET; current generator; microbolometers array; neutrino mass; noise figure; optimization; readout; room temperature second stage; second stage feedback configuration; very low noise front-end solution; Bandwidth; Bolometers; Circuit noise; Frequency; JFET circuits; Neutrino sources; Noise figure; Resistors; Thermal resistance; Transfer functions;
Conference_Titel :
Nuclear Science Symposium, 1999. Conference Record. 1999 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5696-9
DOI :
10.1109/NSSMIC.1999.842515
