| 1 | Arc Power Limit and Distribution on the Large Negative Ion Source Based on JT-60 NNBI显示文摘The target of the large negative ion source based on neutral beam injection (N-NBI) is to produce neutral beam current of 22 A and beam power of 10 MW at 500 keV with duration time of 10 s. Since it was successfully operated in 1996, the 5.3 MW neutral beam power at 380 keV with duration time of 3 s has been achieved. In recent years improving and enhancing the beam power are going on. Several reasons such as plasma non-uniformity, higher beam density at the upper region in the beam profile, | LEIGuangjiu N.Umeda M.Kawai T.Yamamoto M.Kuriyama T.Ohga N.Ebisawa T.Yamazaki M.Kusaka K.Kikuchi S.Hikida K.Usui M.Kazawa S.Numazawa K.Mogaki A.Honda F.Satoh S.Norio K.Ooshima | 2001 | Southwestern Institute of Physics Annual Report2001，，1： | 0 |
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