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Browse Journals & Magazines > Review of Scientific Instrume ...> Volume:62 Issue:11 Help

Poloidal magnetic field measurement system in JT‐60

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9 Author(s)
Nishino, Nobuhiro ; Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, 801‐1 Mukoyama, Naka‐machi, Naka‐gun, Ibaraki 311‐02, Japan ; Kubo, Hirotaka ; Sakasai, Akira ; Koide, Yoshihiko
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A diagnostic system using a helium beam for local poloidal magnetic field measurements (Zeeman polarimeter system) has been constructed. The Zeeman spectrum of the helium 31P‐21S line was observed in JT‐60. The intensity and energy of the neutral helium beam were up to 0.6 A and 200 keV, respectively. Resolution of the Zeeman polarimeter was 0.01 nm which was realized by using a Littrow‐type spectrometer. Photon counting efficiency was 0.065. Moreover, an in situ wavelength calibration could be done, using an Ar laser, within an error of 0.001 nm.

Published in:
Review of Scientific Instruments  (Volume:62 ,  Issue: 11 )

Date of Publication: Nov 1991

Page(s):
2695 - 2699
ISSN :
0034-6748
Digital Object Identifier :
10.1063/1.1142202
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Nov 1991

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