Time resolved neutron flux diagnostics for quasi-steady-state operation study of the HT-7 tokamak
Creators
- 1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)
Description
Time resolved neutron flux diagnostic systems based on BF3 proportional counter and ZnS(Ag) scintillator have been developed and implemented on the HT-7 superconducting tokamak. A ten-channel flexible data acquisition system designed with a PCI-8554 general digital counter and industry PC is equipped. Calibrations are made with several neutron sources. The consistencies of experimental data from two techniques have been proven; the BF3 based system is more reliable with better detection efficiency. The measured neutron yield shows good agreement with the simple numerical calculation. The observed photo-neutron production indicates that photon-nuclear reactions are dominant in several special cases such as low density and disruption conditions. Good agreement on ion temperature deduced from neutron diagnosis and neutral particle analyzer under high parameter plasma conditions implies that neutron flux diagnostics can be used as an effective higher temporal resolution ion temperature monitor
Additional details
Identifiers
- DOI
- 10.1063/1.1789616;
Publishing Information
- Journal Title
- Review of Scientific Instruments
- Journal Volume
- 75
- Journal Issue
- 10
- Journal Page Range
- p. 4284-4286
- ISSN
- 0034-6748
- CODEN
- RSINAK
Conference
- Title
- 15. topical conference on high temperature plasma diagnostics
- Dates
- 19-22 Apr 2004
- Place
- San Diego, CA (United States)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36083258
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S43: PARTICLE ACCELERATORS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BORON FLUORIDES; DATA ACQUISITION; DATA ACQUISITION SYSTEMS; ELECTRON TEMPERATURE; HT-7 TOKAMAK; ION TEMPERATURE; NEUTRAL PARTICLE ANALYZERS; NEUTRON FLUX; NEUTRON SOURCES; NUCLEAR REACTIONS; PHOTONS; PLASMA DIAGNOSTICS; PROPORTIONAL COUNTERS; SEMICONDUCTOR MATERIALS; SILVER; STEADY-STATE CONDITIONS; SUPERCONDUCTING DEVICES; TIME RESOLUTION; ZINC SULFIDES
- Descriptors DEC
- BORON COMPOUNDS; BOSONS; CHALCOGENIDES; CLOSED PLASMA DEVICES; ELEMENTARY PARTICLES; ELEMENTS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; INORGANIC PHOSPHORS; MASSLESS PARTICLES; MATERIALS; MEASURING INSTRUMENTS; METALS; PARTICLE SOURCES; PHOSPHORS; RADIATION DETECTORS; RADIATION FLUX; RADIATION SOURCES; RESOLUTION; SPECTROMETERS; SULFIDES; SULFUR COMPOUNDS; THERMONUCLEAR DEVICES; TIMING PROPERTIES; TOKAMAK DEVICES; TRANSITION ELEMENTS; ZINC COMPOUNDS
Optional Information
- Notes
- (c) 2004 American Institute of Physics