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. ; Pedretti, M. ; Nucciotti, A. ; Pavan, M. ; Pessina, G. ; Previtali, E.
Author_Institution :
Dipartimento di Fisica, Milan Univ., Italy
fDate :
12/1/2000 12:00:00 AM
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; circuit optimisation; junction gate field effect transistors; muon detection; neutrino mass; nuclear electronics; readout electronics; 293 K; cold JFET; current generator; muon bolometers array; neutrino mass; noise figure; optimization; output impedance; readout; room temperature second stage; second stage feedback configuration; very low noise frontend solution; Bandwidth; Bolometers; Circuit noise; Frequency dependence; Neutrino sources; Noise figure; Resistors; Signal design; Thermal resistance; Transfer functions;
Journal_Title :
Nuclear Science, IEEE Transactions on
