Measurement of DT and DD components in neutron spectrum with a double-crystal time-of-flight spectrometer

K. Okada, K. Kondo, K. Ochiai, S. Sato, T. Nishitani, C. Konno, Atsushi Okamoto, S. Kitajima, M. Sasao

Research output: Chapter in Book/Report/Conference proceedingConference contribution


To investigate the deuteron and triton density ratio in core plasmas, a new methodology with measurement of tritium (DT) and deuterium (DD) neutron count rate ratio using a double-crystal time-of-flight (TOF) spectrometer is proposed. Multi-discriminator electronic circuits for the first and second detectors are used in addition to the TOF technique. The optimum arrangement of the detectors and discrimination window were examined considering the relations between the geometrical arrangement and deposited energy using a Monte Carlo Code, PHITS (Particle and Heavy Ion Transport Code System). An experiment to verify the calculations was performed using DD neutrons from an accelerator.

Original languageEnglish
Title of host publicationBurning Plasma Diagnostics - An International Conference
Number of pages4
Publication statusPublished - 2008
EventInternational Conference on Burning Plasma Diagnostics - Varenna, Italy
Duration: 2007 Sept 242007 Sept 28

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


OtherInternational Conference on Burning Plasma Diagnostics


  • Fuel ratio
  • Neutron spectrometer
  • PHITS code
  • TOF spectrometer

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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