Gamma and neutron tagged dataset from CLYC SiPM detector

Tagged dataset of gamma and neutron events from Deuterium-Deuterium (DD) and Deuterium-Tritium (DT) generators. Data from a calibration Cs-137 gamma-only source is also included. The dataset was recorded at the Neutron Science Facility (NSF) of the Nuclear Science and Instrumentation Laboratory (NSIL), IAEA. The detector is based on a small CLYC (Cs2LiYCl6:Ce) crystal (0.5 in diameter by 30 mm length) coupled to a 4-element SiPM array. The data were sampled at 4 GSPS with 10-bits resolution using a CAEN DT5761 digitizer. Subsampling was done to allow the dataset to be used in real-time embedded deployments, leading to a 100 MSPS final sampling rate. The detector energy range goes up to ~4.5 MeVee.

Classification of gamma and neutron events was carried out using a frequency-based pulse shape analysis (FCI). Two data files are included: gamma.csv and neutron.csv. The data is stored as follows in both cases:

Each row represents a single recorded event at 100 MSPS

The first 3001 columns represent the raw pulse shapes in ADC units

Column 3002 is named "Energy" and represents the calibrated event energy in keVee (kilo electron-Volt energy-equivalent) units

Column 3003 is named "FCI" and represents the neutron/gamma classification index based on the frequency-domain parameter

A plot is provided (Dataset Preview.png) to show how the events are classified using FCI against Energy.

The total gamma and neutron events in this dataset are 10913 and 27696, respectively.