Neutron detector array at IUAC: Design features and instrumentation developments
P Sugathan A Jhingan K S Golda T Varughese S Venkataramanan N Saneesh V V Satyanarayana S K Suman J Antony Ruby Shanti K Singh S K Saini A Gupta A Kothari P Barua Rajesh Kumar J Zacharias R P Singh B R Behera S K Mandal I M Govil R K Bhowmik
The characteristics and performance of the newly commissioned neutron detector array at IUAC are described. The array consists of 100 BC501 liquid scintillators mounted in a semispherical geometry and are kept at a distance of 175 cm from the reaction point. Each detector is a $5''\times 5''$ cylindrical cell coupled to $5''$ diameter photomultiplier tube (PMT). Signal processing is realized using custom-designed home-made integrated electronic modules which perform neutron–gamma discrimination using zero cross timing and time-of-flight (TOF) technique. Compact custom-built high voltage power supply developed using DC–DC converters are used to bias the detector. The neutrons are recorded in coincidence with fission fragments which are detected using multi-wire proportional counters mounted inside a 1m diameter SS target chamber. The detectors and electronics have been tested off-line using radioactive sources and the results are presented.
P Sugathan1 A Jhingan1 K S Golda1 T Varughese1 S Venkataramanan1 N Saneesh1 V V Satyanarayana1 S K Suman1 J Antony1 Ruby Shanti1 K Singh1 S K Saini1 A Gupta1 A Kothari1 P Barua1 Rajesh Kumar1 J Zacharias1 R P Singh1 B R Behera1 S K Mandal1 I M Govil1 R K Bhowmik1
Volume 94, 2020
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