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Related Experiment Video

Updated: May 16, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

A real-time n/γ digital pulse shape discriminator based on FPGA.

Shiping Li¹, Xiufeng Xu, Hongrui Cao

¹Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China. liship@mail.ustc.edu.cn

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine

|December 5, 2012

Summary

A novel Field Programmable Gate Array (FPGA) based digital pulse shape discriminator effectively separates neutrons from gammas in mixed radiation fields. This technology achieves excellent discrimination quality and zero dead time for the International Thermonuclear Experimental Reactor

Related Experiment Videos

Last Updated: May 16, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

Area of Science:

Nuclear instrumentation
Fusion energy research

Background:

Accurate neutron detection is crucial for fusion reactor monitoring.
Distinguishing neutrons from gamma rays in mixed fields presents a significant challenge.

Purpose of the Study:

To develop and validate a real-time digital pulse shape discriminator for neutron detection.
To enhance the performance of the Neutron Flux Monitor (NFM) for the International Thermonuclear Experimental Reactor (ITER).

Main Methods:

Utilized Field Programmable Gate Arrays (FPGAs) for parallel and pipeline processing.
Implemented simultaneous rise time and amplitude inspection techniques for pulse shape discrimination.
Integrated the discriminator into the Neutron Flux Monitor (NFM) system.

Main Results:

Achieved effective real-time separation of neutrons and gammas in mixed radiation fields.
Demonstrated excellent neutron/gamma discrimination quality.
Verified zero dead time performance of the developed discriminator.

Conclusions:

The FPGA-based real-time digital pulse shape discriminator meets the NFM requirements for ITER.
The developed system offers a robust solution for neutron detection in fusion environments.