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

Volume

47

Issue

6

fYear

2000

fDate

12/1/2000 12:00:00 AM

Firstpage

1851

Lastpage

1856

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;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.914459

Filename

914459