A Fast Analogue Front End for a Diamond Radiation Spectrometer

Author

Fisher-Levine, Merlin ; Velthuis, Jaap ; Cussans, D. ; Nash, Stephen

Author_Institution

HH Wills Phys. Lab., Univ. of Bristol, Bristol, UK

Volume

60

Issue

5

fYear

2013

fDate

Oct. 2013

Firstpage

3990

Lastpage

3994

Abstract

There is a need for radiation spectrometers that are able to work in sustained high-count-rate environments. This work presents the results obtained with a discrete component charge-sensitive amplifier and shaper combination designed to be the front end for a diamond spectrometer. A system with a rise time of 2.12ns, FWHM of 3.75ns and an ENC of 293e^- RMS was developed and a high gain of 147 mV/fC was achieved with return to baseline within 20 ns. Instantaneous count rates of 50MHz and sustained count-rates of 20MHz were made possible through the use of a fast preamplifier and differentiating shaper.

Keywords

diamond; elemental semiconductors; particle spectrometers; preamplifiers; semiconductor counters; wide band gap semiconductors; C; diamond radiation spectrometer; differentiating shaper; discrete component charge-sensitive amplifier; fast analogue front end; fast preamplifier; Detectors; Diamonds; Energy resolution; HEMTs; MODFETs; Noise; Silicon; Charge sensitive amplifier; cVD diamond; fast spectroscopy; high speed amplifier; radiation;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2013.2280972

Filename

6616654