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Spatial Heterodyne Spectro-Polarimetry Systems for Imaging Key Plasma Parameters in Fusion Devices

John HOWARD, Ahmed DIALLO, Roger JASPERS¹⁾ and Jinil CHUNG²⁾

Plasma Research Laboratory, Australian National University. Canberra ACT 0200, Australia

1)

FOM institute for Plasmaphysics Rijnhuizen, 3430 BE Nieuwegein, The Netherlands

2)

National Fusion Research Institute, Gwahangno 113, Yusung-Gu, Daejeon, 305-333, Korea

(Received 19 January 2009 / Accepted 8 July 2009 / Published 26 March 2010)

Abstract

Imaging diagnostics systems are very important to aid the understanding of core and edge confinement in 3D helical magnetic devices. In this paper we consider recent developments in optical “coherence imaging” interferometric systems that open new diagnostic capabilities for next generation devices, with particular focus on Motional Stark Effect (MSE) imaging. We present preliminary results obtained using a hybrid spatio-temporal heterodyne snapshot imaging polarimeter-interferometer for motional Stark effect imaging of the q-profile in the TEXTOR tokamak.

Copyright (c) 2010 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

polarimetry, spectroscopy, Motional Stark Effect, coherence, interferometry

DOI: 10.1585/pfr.5.S1010

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References

• [1] F.M. Levinton et al., Phys. Rev. Lett. 63, 2060 (1989).
• [2] D. Wroblewski et al., Rev. Sci. Instrum. 61, 3552 (1990).
• [3] B.W. Rice, Fusion Eng. Des. 34-35, 135 (1999).
• [4] J. Howard, Plasma Phys. Control. Fusion 50, 125003 (18pp) (2008).
• [5] M. Francon and S. Mallick, Polarization Interferometers (Wiley-Interscience, London, 1971).

This paper may be cited as follows:

John HOWARD, Ahmed DIALLO, Roger JASPERS and Jinil CHUNG, Plasma Fusion Res. 5, S1010 (2010).