The multichannel triple-laser interferometer/polarimeter system at RTP

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1147884· OSTI ID:452848

Rommers, J H; Donne, A J; Karelse, F A ^[1]; Howard, J ^[2]

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1. FOM---Instituut voor Plasmafysica Rijnhuizen, Association Euratom-FOM, P.O. Box 1207, 3430 BE Nieuwegein (The Netherlands)
2. Plasma Research Laboratory, Australian National University, Canberra, A.C.T. 0200 (Australia)

A 19-channel combined interferometer and polarimeter system has recently become operational at the Rijnhuizen Tokamak Project (a=0.164 m, R=0.72 m, B{sub tor}{le}2.5 T, I{sub p}{le}150kA, plasma pulse duration {le}500ms), in order to determine the poloidal magnetic field and plasma density distribution simultaneously. The method is based on the separate propagation of two counter-rotating, circularly polarized probing waves, and enables high temporal resolution measurements of both the interferometric and the polarimetric phase change using only one detector per line of sight. In this article a thorough discussion of the (polarization-related) optical, electronic, and computational aspects of the system will be presented. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 452848
• Report Number(s): CONF-960543--
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 2 Vol. 68; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
INTERFEROMETERS
LASER RADIATION
MAGNETIC FIELDS
OPERATION
PLASMA DENSITY
PLASMA DIAGNOSTICS
POLARIMETERS
POLARIMETRY
RTP TOKAMAK
TOKAMAK DEVICES
WAVE PROPAGATION
light interferometers
measurement by laser beam
plasma toroidal confinement