Hα measurements and neutral particle transport in Heliotron J

被引：2

作者：

Kobayashi, S. ^{[1
]}

Yabutani, H.

Nakashima, Y.

Higashizono, Y.

Nagasaki, K.

Mizuuchi, T.

Okada, H.

Sano, F.

Cappa, A.

Kondo, K.

Nakamura, Y.

Suzuki, Y.

机构：

[1] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan

[2] Kyoto Univ, Grad Sch Energy Sci, Kyoto 6110011, Japan

[3] Univ Tsukuba, Plasma Res Ctr, Tsukuba, Ibaraki 3058577, Japan

[4] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan

[5] Natl Inst Fus Sci, Gifu 5095292, Japan

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2006年 / 77卷 / 10期

关键词：

D O I：

10.1063/1.2347621

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A multichannel system of the H alpha-line emission detector is developed in order to investigate the neutral particle transport in the Heliotron J plasma. The application of a multianode photomultiplier tube to the filter measurement system enables us to observe the H alpha emission profile with 32 chords. The absolute calibration with a standard lamp is performed and the cross-talk between each of the adjoining channels is evaluated to be less than 6%, while the photomultiplier tube has a typical cross-talk of 3% in nominal value. The temporal and spatial profiles of the H alpha emission are measured in detail in the plasma breakdown by electron cyclotron heating (ECH). The H alpha emission profile in the ECH plasma is calculated by the Monte Carlo simulation using a three-dimensional mesh model. The fueling rates of the wall recycling and the gas puffing are estimated by means of the simulation and the measurement. (c) 2006 American Institute of Physics.

引用

页数：4

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