Eur. Phys. J. Plus (2014) 129: 205
https://doi.org/10.1140/epjp/i2014-14205-1

Regular Article

Development of a low-noise amplifier for neutron detection in harsh environment

¹ Centro Ric. Frascati, Associazione EURATOM-ENEA sulla Fusione, Frascati, Italy
² Università di Roma Tor Vergata e INFN, Sezione di Roma 2, Rome, Italy

^* e-mail: lorenzo.paolozzi@roma2.infn.it

Received: 1 August 2014
Revised: 29 August 2014
Accepted: 3 September 2014
Published online: 1 October 2014

Abstract

A fast matching charge amplifier for neutron spectroscopy in harsh environment has been developed and tested at the JET Tokamak. This front-end circuit is capable to operate at a distance up to 100 meters from a sensor without increasing its equivalent noise charge. Further improvements are possible by exploiting the intrinsic performance of silicon-germanium bipolar junction transistors.