Neutron Spectrometers


[Objectives]
Measurement of the DD neutron spectra to investigate the ion velosity distribution function.

[Detectors, Diagnostics Method]
Pulse hight analysis using Gridded He-3 ionization chamber and NE213 liquid scintillator detector.

[Specifications]
„Time resolution:100 ms
„Energy range: Thermal ~ 3 MeV (Gridded He-3 ionization chamber)
1 ~ 20 MeV (NE213 liquid scintillator detector)
„Energy resolution: 3% at 2.5 MeV (Gridded He-3 ionization chamber)
10% at 2.5 MeV (NE213 liquid scintillator detector)
„Position: Basement under the U2 port of P-10 section.

[Reference]
(1) T. Nishitani, M. Hoek, "Neutron Measurement as Fusion Plasma@Diagnostics", JAERI-M 93-228 Vol.2, (1993)1009.