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Title: A new beam emission polarimetry diagnostic for measuring the magnetic field line angle at the plasma edge of ASDEX Upgrade

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4959952· OSTI ID:22596464
;  [1]
  1. Max-Planck-Institute for Plasma Physics, Boltzmannstr. 2, 85748 Garching (Germany)

A new edge beam emission polarimetry diagnostic dedicated to the measurement of the magnetic field line angle has been installed on the ASDEX Upgrade tokamak. The new diagnostic relies on the motional Stark effect and is based on the simultaneous measurement of the polarization direction of the linearly polarized π (parallel to the electric field) and σ (perpendicular to the electric field) lines of the Balmer line D{sub α}. The technical properties of the system are described. The calibration procedures are discussed and first measurements are presented.

OSTI ID:
22596464
Journal Information:
Review of Scientific Instruments, Vol. 87, Issue 11; Other Information: (c) 2016 EURATOM; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
Country of Publication:
United States
Language:
English