TY - JOUR
T1 - Investigation of interaction between MeV-ions and first wall from neutron and γ-ray measurements in JT-60U
AU - Kondoh, T.
AU - Kusama, Y.
AU - Kimura, H.
AU - Saigusa, M.
AU - Fujii, T.
AU - Moriyama, S.
AU - Nemoto, M.
AU - Tobita, K.
AU - Morioka, A.
AU - Nagashima, K.
AU - Nishitani, T.
PY - 1997/2/11
Y1 - 1997/2/11
N2 - Loss of MeV-energy protons to the first wall during H-minority second harmonic ion cyclotron range of frequency (ICRF) heating has been measured for the first time by neutron signals emitted by 11B(p,n)11C reaction in B4C coated divertor tiles and boronized tiles in the JT-60U tokamak. Since the reaction has a threshold energy of 3.0 MeV, the neutron signal indicates loss of fast protons whose energy is more than 3 MeV. Measurements of gamma-ray lines emitted from reaction between the fast protons and plasma impurities are also used for measurements of confined protons accelerated up to 5 MeV.
AB - Loss of MeV-energy protons to the first wall during H-minority second harmonic ion cyclotron range of frequency (ICRF) heating has been measured for the first time by neutron signals emitted by 11B(p,n)11C reaction in B4C coated divertor tiles and boronized tiles in the JT-60U tokamak. Since the reaction has a threshold energy of 3.0 MeV, the neutron signal indicates loss of fast protons whose energy is more than 3 MeV. Measurements of gamma-ray lines emitted from reaction between the fast protons and plasma impurities are also used for measurements of confined protons accelerated up to 5 MeV.
KW - Fast particle losses
KW - JT-60U
KW - RF heating
KW - Tokamak
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U2 - 10.1016/s0022-3115(97)80100-6
DO - 10.1016/s0022-3115(97)80100-6
M3 - Article
AN - SCOPUS:85028727354
VL - 241-243
SP - 564
EP - 568
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
ER -