A neutron time-of-flight system for inertial confinement fusion.

Rev Sci Instrum

Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-986, Mianyang, Sichuan 621900, China.

Published: February 2020

AI Article Synopsis

  • A neutron time-of-flight (nTOF) system has been set up at China's largest laser facility to analyze neutron spectra during inertial confinement fusion experiments.
  • The system comprises 11 fast plastic scintillation detectors designed to gather data on neutron yield, ion temperature, and neutron bang time.
  • It successfully measures various neutron yields and provides accuracies around 10% for yield and temperature, while measuring neutron bang time within 60 picoseconds, making it a key diagnostic tool for over 200 experimental shots annually.

Article Abstract

A neutron time-of-flight (nTOF) system has been implemented at the largest laser facility in China. The nTOF system is used to measure neutron spectra in inertial confinement fusion experiments. The nTOF system consists of 11 fast plastic scintillation detectors. The detectors employed three designs to measure neutron yield, ion temperature, and neutron bang time. The nTOF system is capable of measuring the primary neutron yield from 10 to 10, secondary DT neutron yield from 10 to 10, and ion temperature and neutron bang time yields from 10 to 10. The accuracies of the nTOF system are about 10% for neutron yield and ion temperature measurements and better than 60 ps for neutron bang time measurements. The nTOF system has become one of the most important diagnostics for implosions, and it is used for more than 200 shots per year.

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http://dx.doi.org/10.1063/1.5109711DOI Listing

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Article Synopsis
  • A neutron time-of-flight (nTOF) system has been set up at China's largest laser facility to analyze neutron spectra during inertial confinement fusion experiments.
  • The system comprises 11 fast plastic scintillation detectors designed to gather data on neutron yield, ion temperature, and neutron bang time.
  • It successfully measures various neutron yields and provides accuracies around 10% for yield and temperature, while measuring neutron bang time within 60 picoseconds, making it a key diagnostic tool for over 200 experimental shots annually.
View Article and Find Full Text PDF

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