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Kurihara, Ryoichi; Seki, Yasushi; Ueda, Shuzo; Aoki, Isao; Nishio, S.; Ajima, Toshio; Kunugi, Tomoaki; Takase, Kazuyuki; Yamauchi, M.; Hosokai, I.; Okazaki, Takashi; Yamazaki, Shunpei

doi:10.1023/a:1021895304522

Cited by 7 publications

(1 citation statement)

References 4 publications

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“…We express the topology of the magnetic flux surfaces as the relations [6]: 31F, P-5.078 (2007) where a i and b i are free parameters, subscript 'lcfs' means topological parameter at the last closed flux surface (LCFS), which are evaluated from the LCFS shape. The LCFS shape is treated as the given condition in this analysis because it can be well identified from the magnetic diagnostics [7]. The absolute value of the poloidal flux is also the free parameter.…”

Section: Development Of Mhd Equilibrium Reconstruction Methodsmentioning

confidence: 99%

Optimization of the viewing chord arrangement of the ITER poloidal polarimeter

Yamaguchi

Kawano

Fujieda

et al. 2008

Plasma Phys. Control. Fusion

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We have studied an optimization of the viewing chord arrangement of the poloidal polarimeter in the ITER tokamak. We have optimized the viewing chord arrangement based on the evaluation using a magnetohydrodynamic equilibrium reconstruction code for the first time. We have developed the reconstruction code whose results are sensitive to the measured data of the poloidal polarimeter. Using that code, we have successfully optimized viewing chord arrangements for three equilibria of the ITER operation scenario, which are the inductive operation scenario II at the start of the burn phase (S2-SOB), and so on. The accuracy of the central safety factor within 3% has been achieved for the case of which the measurement error has not been included. Furthermore, the viewing chord arrangement which is optimized for S2-SOB has been applied for other equilibria. The accuracy which is evaluated using the optimized arrangement for S2-SOB has not deteriorated drastically compared with the accuracy which is evaluated using the optimized arrangement for each equilibrium. The viewing chord arrangement which is optimized for S2-SOB is thought to be a promising candidate.

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Section: Development Of Mhd Equilibrium Reconstruction Methodsmentioning

confidence: 99%