Triton burnup measurements using scintillating fiber detectors on JT-60U

T. Nishitani; M. Isobe; G. A. Wurden; R. E. Chrien; H. Harano; K. Tobita; Y. Kusama

doi:10.1016/S0920-3796(96)00621-7

Triton burnup measurements using scintillating fiber detectors on JT-60U

T. Nishitani, M. Isobe, G. A. Wurden, R. E. Chrien, H. Harano, K. Tobita, Y. Kusama

Research output: Contribution to journal › Article

14 Citations (Scopus)

Abstract

A new type of 14 MeV neutron detector, based on scintillating fibres, was developed for triton burnup measurements in JT-60U deuterium discharges. The detector consists of an array of scintillating fibres embedded in an aluminum matrix, coupled to a magnetic-resistant phototube with a high current output base, enabling count rates up to 100 MHz. The detector characteristics have been investigated using the Fusion Neutron Source (FNS) DT neutron generator. From the time-dependent measurement of 14 MeV neutron emission in neutral beam (NB) heated plasma discharges, the fast triton diffusivity has been evaluated to be 0.05-0.15 m² s^-1. Loss of fast tritons caused by Toroidal Alfvén Eignmode (TAE) instability was observed in the peripheral region of the plasma.

Original language	English
Pages (from-to)	563-566
Number of pages	4
Journal	Fusion Engineering and Design
Volume	34-35
DOIs	https://doi.org/10.1016/S0920-3796(96)00621-7
Publication status	Published - 1997 Mar
Externally published	Yes

ASJC Scopus subject areas

Civil and Structural Engineering
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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10.1016/S0920-3796(96)00621-7

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Nishitani, T., Isobe, M., Wurden, G. A., Chrien, R. E., Harano, H., Tobita, K., & Kusama, Y. (1997). Triton burnup measurements using scintillating fiber detectors on JT-60U. Fusion Engineering and Design, 34-35, 563-566. https://doi.org/10.1016/S0920-3796(96)00621-7

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title = "Triton burnup measurements using scintillating fiber detectors on JT-60U",

abstract = "A new type of 14 MeV neutron detector, based on scintillating fibres, was developed for triton burnup measurements in JT-60U deuterium discharges. The detector consists of an array of scintillating fibres embedded in an aluminum matrix, coupled to a magnetic-resistant phototube with a high current output base, enabling count rates up to 100 MHz. The detector characteristics have been investigated using the Fusion Neutron Source (FNS) DT neutron generator. From the time-dependent measurement of 14 MeV neutron emission in neutral beam (NB) heated plasma discharges, the fast triton diffusivity has been evaluated to be 0.05-0.15 m2 s-1. Loss of fast tritons caused by Toroidal Alfv{\'e}n Eignmode (TAE) instability was observed in the peripheral region of the plasma.",

author = "T. Nishitani and M. Isobe and Wurden, {G. A.} and Chrien, {R. E.} and H. Harano and K. Tobita and Y. Kusama",

year = "1997",

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doi = "10.1016/S0920-3796(96)00621-7",

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T1 - Triton burnup measurements using scintillating fiber detectors on JT-60U

AU - Nishitani, T.

AU - Isobe, M.

AU - Wurden, G. A.

AU - Chrien, R. E.

AU - Harano, H.

AU - Tobita, K.

AU - Kusama, Y.

PY - 1997/3

Y1 - 1997/3

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AB - A new type of 14 MeV neutron detector, based on scintillating fibres, was developed for triton burnup measurements in JT-60U deuterium discharges. The detector consists of an array of scintillating fibres embedded in an aluminum matrix, coupled to a magnetic-resistant phototube with a high current output base, enabling count rates up to 100 MHz. The detector characteristics have been investigated using the Fusion Neutron Source (FNS) DT neutron generator. From the time-dependent measurement of 14 MeV neutron emission in neutral beam (NB) heated plasma discharges, the fast triton diffusivity has been evaluated to be 0.05-0.15 m2 s-1. Loss of fast tritons caused by Toroidal Alfvén Eignmode (TAE) instability was observed in the peripheral region of the plasma.

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