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Neutron Energy Spectrum Measurements with a Compact Liquid Scintillation Detector on EAST
- Publication Year :
- 2013
- Publisher :
- arXiv, 2013.
-
Abstract
- A neutron detector based on EJ301 liquid scintillator has been employed at EAST to measure the neutron energy spectrum for D-D fusion plasma. The detector was carefully characterized in different quasi-monoenergetic neutron fields generated by a 4.5 MV Van de Graaff accelerator. In recent experimental campaigns, due to the low neutron yield at EAST, a new shielding device was designed and located as close as possible to the tokamak to enhance the count rate of the spectrometer. The fluence of neutrons and gamma-rays was measured with the liquid neutron spectrometer and was consistent with 3He proportional counter and NaI (Tl) gamma-ray spectrometer measurements. Plasma ion temperature values were deduced from the neutron spectrum in discharges with lower hybrid wave injection and ion cyclotron resonance heating. Scattered neutron spectra were simulated by the Monte Carlo transport Code, and they were well verified by the pulse height measurements at low energies.<br />Comment: 19 pages,10 figures, 1 table
- Subjects :
- Bonner sphere
Physics
Physics - Instrumentation and Detectors
Physics::Instrumentation and Detectors
Astrophysics::High Energy Astrophysical Phenomena
Nuclear instruments and methods for hot plasma diagnostic
FOS: Physical sciences
Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)
Instrumentation and Detectors (physics.ins-det)
Neutron scattering
Neutron temperature
Nuclear physics
FIS/01 - FISICA SPERIMENTALE
Neutron generator
Physics::Plasma Physics
Neutron cross section
Neutron source
Neutron detection
Neutron
Nuclear Experiment (nucl-ex)
Nuclear Experiment
Instrumentation
Neutron detectors (cold, thermal, fast neutrons)
Mathematical Physics
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....b8c701ccce88d5fff81a6083fa73781c
- Full Text :
- https://doi.org/10.48550/arxiv.1304.7356