A CsI(Tl) detector array for the measurement of light charged particles in heavy-ion reactions

TL;DR

This paper presents a CsI(Tl) detector array designed for measuring light charged particles in heavy-ion nuclear reactions, analyzing its energy response, non-linearity, and pulse shape discrimination performance under various conditions.

Contribution

The study introduces a new detector array setup and characterizes its response and limitations in measuring light charged particles in heavy-ion reactions.

Findings

Energy response measured for alpha particles from 5 to 40 MeV.

Identified non-linearity in energy response and its correction.

Observed deterioration of pulse shape discrimination at higher count rates.

Abstract

An array of eight CsI(Tl) detectors has been set up to measure the light charged particles in nuclear reactions using heavy ions from the Pelletron Linac Facility, Mumbai. The energy response of CsI(Tl) detector to $\alpha$-particles from 5 to 40 MeV is measured using radioactive sources and the $^{12}$C($^{12}$C, $\alpha$) reaction populating discrete states in $^{20}$Ne. The energy non-linearity and the count rate effect on the pulse shape discrimination property have also been measured and observed the deterioration of pulse shape discrimination with higher count rate.