Neutron fluctuation measurements on TFTR | Zendy

W. W. Heidbrink | Zendy

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Neutron fluctuation measurements on TFTR

Author(s) -

W. W. Heidbrink

Publication year - 1986

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.1139176

Subject(s) - scintillator , tokamak fusion test reactor , neutron , photomultiplier , deuterium , materials science , tokamak , neutron emission , nuclear physics , optics , beam (structure) , physics , neutron detection , plasma diagnostics , plasma , neutron temperature , detector

Measurements of fluctuations in the neutron yield are made on the tokamak fusion test reactor (TFTR) with plastic scintillators. Light from the scintillators is coupled through acrylic rods or fiber‐optic cables to photomultipliers operated in current mode. Discrimination against hard x rays is accomplished through comparison with the signal from a ZnS(6Li) scintillator. These measurements are useful in studies of deuterium pellet deposition, of the acceleration of beam ions during major radial compression, and of MHD instabilities. Techniques for measuring the neutral beam density profile and Qequivdt using neutron fluctuation measurements during pellet injection also have been proposed.

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