A compact stilbene crystal neutron spectrometer for EAST D-D plasma neutron diagnostics
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Chengfu Road 201, 100871 Beijing (China)
- Institute of Plasma Physics, Chinese Academy of Sciences, PO Box 1126, 230031 Hefei, Anhui (China)
A new compact stilbene crystal neutron spectrometer has been investigated and applied in the neutron emission spectroscopy on the EAST tokamak. A new components analysis method is presented to study the anisotropic light output in the stilbene crystal detector. A Geant4 code was developed to simulate the neutron responses in the spectrometer. Based on both the optimal light output function and the fitted pulse height resolution function, a reliable neutron response matrix was obtained by Geant4 simulations and validated by 2.5 MeV and 14 MeV neutron measurements at a 4.5 MV Van de Graaff accelerator. The spectrometer was used to diagnose the ion temperature in plasma discharges with lower hybrid wave injection and ion cyclotron resonance heating on the EAST tokamak.
- OSTI ID:
- 22105456
- Journal Information:
- Review of Scientific Instruments, Vol. 84, Issue 3; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
COMPUTERIZED SIMULATION
HT-7U TOKAMAK
ICR HEATING
ION TEMPERATURE
NEUTRON DETECTION
NEUTRON EMISSION
NEUTRON SPECTROMETERS
NEUTRON SPECTROSCOPY
NEUTRONS
PLASMA DIAGNOSTICS
SENSORS
STILBENE
VAN DE GRAAFF ACCELERATORS