High-speed three-wave polarimeter-interferometer diagnostic for Madison symmetric torus

Journal Article · Sun Oct 15 00:00:00 EDT 2006 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2222332· OSTI ID:20861306

Deng, B H; Brower, D L; Ding, W X; Wyman, M D; Chapman, B E; Sarff, J S ^[1]

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1. Electrical Engineering Department, University of California, Los Angeles, California 90095 (United States)

A high-speed three-wave polarimeter-interferometer diagnostic has been developed on the Madison symmetric torus reversed field pinch to provide simultaneous measurement of electron density and poloidal magnetic field profile evolution. With increased digitizer bandwidth, polarimetry noise due to aliasing and cross-talk is minimized, and time response improved. System performance is demonstrated by measurements of equilibrium profile evolution during fast events such as the sawtooth crash and pellet injection.

• OSTI ID: 20861306
• Journal Information: Review of Scientific Instruments, Vol. 77, Issue 10; Other Information: DOI: 10.1063/1.2222332; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
INTERFEROMETERS
INTERFEROMETRY
MAGNETIC FIELDS
PELLET INJECTION
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA INSTABILITY
POLARIMETERS
POLARIMETRY
REVERSE-FIELD PINCH
REVERSED-FIELD PINCH DEVICES
SAWTOOTH OSCILLATIONS
VELOCITY
VISIBLE RADIATION