The suppression of the internal detector background in 3He counters through pulse shape discrimination methods is becoming an area of interest for a growing number of experiments that want to detect low event rate signals. We discuss two discrimination methods for signals coming from high-pressure (thus high efficiency) 3He counters read out through charge sensitive preamplifiers. We present a digital filter to convert the integrated signal to a current pulse. The application of a discrimination method based on the peak shape suppresses the internal alpha-induced background by > 98.5%. In addition a semi-empirical model of the signal creation in 3He counters is presented and compared to experimental data.

Improved pulse shape discrimination for high pressure 3He counters / J. Balibrea-Correa, G.F. Ciani, R. Buompane, F. Cavanna, L. Csedreki, R. Depalo, F. Ferraro, A. Best. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 906(2018), pp. 103-109.

Improved pulse shape discrimination for high pressure 3He counters

R. Depalo;F. Ferraro;
2018

Abstract

The suppression of the internal detector background in 3He counters through pulse shape discrimination methods is becoming an area of interest for a growing number of experiments that want to detect low event rate signals. We discuss two discrimination methods for signals coming from high-pressure (thus high efficiency) 3He counters read out through charge sensitive preamplifiers. We present a digital filter to convert the integrated signal to a current pulse. The application of a discrimination method based on the peak shape suppresses the internal alpha-induced background by > 98.5%. In addition a semi-empirical model of the signal creation in 3He counters is presented and compared to experimental data.
3; He detectors; Monte Carlo detector response; Pulse shape discrimination
Settore FIS/04 - Fisica Nucleare e Subnucleare
Article (author)
File in questo prodotto:
File Dimensione Formato  
2018-Balibrea-Correa-NIMA.pdf

accesso riservato

Tipologia: Publisher's version/PDF
Dimensione 2.89 MB
Formato Adobe PDF
2.89 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/843625
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 11
social impact