Development of CsI based charge particle detector array for nuclear spectroscopy at IUAC

Developmental activities in charge particle detector array (CPDA) for discrete gamma ray spectrometry is presented. The multi-detector array has been designed and developed for the detection of light charge particles such as protons and α-particles generated in a heavy ion induced reaction in coincidence with γ-rays. The array currently consists of 32 CsI(TI) detectors coupled to photo-diode and has been developed to serve as an ancillary detector system for Indian National Gamma Array (INGA). Off-line test of CsI detector was carried out using radioactive sources ¹³⁷Cs, ⁶⁰Co, ²⁴¹Am and ²²⁹Th. Energy resolution of 250 keV (for 8.37 MeV α-particles) and 70 keV (1332 keV γ-rays) were observed. The array was tested for light-charged particle – γ-ray coincidence for the system ¹²C + ²⁸Si at 30 MeV. Detailed test results and activities on instrumentation development and design will be presented