Charge-exchange neutral particle measurement in MeV energy range on JT-60U

Y. Kusama; M. Nemoto; M. Satoh; Y. Tsukahara; K. Tobita; H. Takeuchi; S. Petrov; V. Afanassiev; S. Kozlovskij; A. Kislyakov; M. Petrov

doi:10.1063/1.1146405

Charge-exchange neutral particle measurement in MeV energy range on JT-60U

Y. Kusama, M. Nemoto, M. Satoh, Y. Tsukahara, K. Tobita, H. Takeuchi, S. Petrov, V. Afanassiev, S. Kozlovskij, A. Kislyakov, M. Petrov

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Abstract

A charge-exchange neutral particle analyzer for the measurement of the MeV energy range ions produced by nuclear fusion or radio frequency heating has been developed and installed in JT-60U. Neutral particles entering the analyzer are ionized with a carbon foil of thickness 400 Å. The energy and mass of the stripped ions are resolved by magnetic and electrostatic fields (E∥B type). The analyzer has eight CsI(Tl) scintillator detectors. The energy range is 0.5-4 MeV for ⁴He⁰, the dynamic range is 4.08 and the energy resolution is 6%-11%. The detection efficiency for ⁴He⁰ with energy above 1 MeV is 30%-40%. A pulse height analysis (PHA) with 16 channels was adopted to distinguish particle signals from noise arising from neutrons, γ rays and optical lights emitted by JT-60U plasmas. The validity of the PHA was confirmed in a calibration experiment using a neutron source and in a high power heating experiment in JT-60U.

Original language	English
Pages (from-to)	339-341
Number of pages	3
Journal	Review of Scientific Instruments
Volume	66
Issue number	1
DOIs	https://doi.org/10.1063/1.1146405
Publication status	Published - 1995
Externally published	Yes

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Instrumentation

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@article{2c04fc7f3a8c4d89b7d85be373841321,

title = "Charge-exchange neutral particle measurement in MeV energy range on JT-60U",

abstract = "A charge-exchange neutral particle analyzer for the measurement of the MeV energy range ions produced by nuclear fusion or radio frequency heating has been developed and installed in JT-60U. Neutral particles entering the analyzer are ionized with a carbon foil of thickness 400 {\AA}. The energy and mass of the stripped ions are resolved by magnetic and electrostatic fields (E∥B type). The analyzer has eight CsI(Tl) scintillator detectors. The energy range is 0.5-4 MeV for 4He0, the dynamic range is 4.08 and the energy resolution is 6%-11%. The detection efficiency for 4He0 with energy above 1 MeV is 30%-40%. A pulse height analysis (PHA) with 16 channels was adopted to distinguish particle signals from noise arising from neutrons, γ rays and optical lights emitted by JT-60U plasmas. The validity of the PHA was confirmed in a calibration experiment using a neutron source and in a high power heating experiment in JT-60U.",

author = "Y. Kusama and M. Nemoto and M. Satoh and Y. Tsukahara and K. Tobita and H. Takeuchi and S. Petrov and V. Afanassiev and S. Kozlovskij and A. Kislyakov and M. Petrov",

year = "1995",

doi = "10.1063/1.1146405",

language = "English",

volume = "66",

pages = "339--341",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics Publising LLC",

number = "1",

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TY - JOUR

T1 - Charge-exchange neutral particle measurement in MeV energy range on JT-60U

AU - Kusama, Y.

AU - Nemoto, M.

AU - Satoh, M.

AU - Tsukahara, Y.

AU - Tobita, K.

AU - Takeuchi, H.

AU - Petrov, S.

AU - Afanassiev, V.

AU - Kozlovskij, S.

AU - Kislyakov, A.

AU - Petrov, M.

PY - 1995

Y1 - 1995

N2 - A charge-exchange neutral particle analyzer for the measurement of the MeV energy range ions produced by nuclear fusion or radio frequency heating has been developed and installed in JT-60U. Neutral particles entering the analyzer are ionized with a carbon foil of thickness 400 Å. The energy and mass of the stripped ions are resolved by magnetic and electrostatic fields (E∥B type). The analyzer has eight CsI(Tl) scintillator detectors. The energy range is 0.5-4 MeV for 4He0, the dynamic range is 4.08 and the energy resolution is 6%-11%. The detection efficiency for 4He0 with energy above 1 MeV is 30%-40%. A pulse height analysis (PHA) with 16 channels was adopted to distinguish particle signals from noise arising from neutrons, γ rays and optical lights emitted by JT-60U plasmas. The validity of the PHA was confirmed in a calibration experiment using a neutron source and in a high power heating experiment in JT-60U.

AB - A charge-exchange neutral particle analyzer for the measurement of the MeV energy range ions produced by nuclear fusion or radio frequency heating has been developed and installed in JT-60U. Neutral particles entering the analyzer are ionized with a carbon foil of thickness 400 Å. The energy and mass of the stripped ions are resolved by magnetic and electrostatic fields (E∥B type). The analyzer has eight CsI(Tl) scintillator detectors. The energy range is 0.5-4 MeV for 4He0, the dynamic range is 4.08 and the energy resolution is 6%-11%. The detection efficiency for 4He0 with energy above 1 MeV is 30%-40%. A pulse height analysis (PHA) with 16 channels was adopted to distinguish particle signals from noise arising from neutrons, γ rays and optical lights emitted by JT-60U plasmas. The validity of the PHA was confirmed in a calibration experiment using a neutron source and in a high power heating experiment in JT-60U.

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UR - http://www.scopus.com/inward/citedby.url?scp=0011139684&partnerID=8YFLogxK

U2 - 10.1063/1.1146405

DO - 10.1063/1.1146405

M3 - Article

AN - SCOPUS:0011139684

SN - 0034-6748

VL - 66

SP - 339

EP - 341

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 1

ER -

Charge-exchange neutral particle measurement in MeV energy range on JT-60U

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