Speakers
Description
Digital pulse shape discrimination methodologies, used in neutron gamma discrimination application are mostly offline based due to computational burden and hardware limitations. This research work describes a new pulse peak reference based, real-time pulse shape discrimination algorithm, implemented on FPGA. The detection of the start of a pulse is very much sensitive to noise floor, as it just crosses the baseline. Also, the performances of discriminators are dependent on time walk, jitter and noise. Whereas, the pulse peak position can be easily measured and less prone to noise. This algorithm is based on pulse peak position, and reference to that, integration of pulse to two different pre-defined regions, to have good pulse shape discrimination. The algorithm is implemented on KC705 FPGA board for real time pulse shape discrimination application and neutron gamma discrimination study is performed with 5 inches by 5 inches (length by diameter) liquid scintillator-based detector (BC501A), coupled with Hamamatsu photomultiplier tube (PMT) R4144.
| Position | Scientific Officer |
|---|---|
| Affiliation | Variable Energy Cyclotron Centre |
| Country | India |