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Title: Invited Article: A novel calibration method for the JET real-time far infrared polarimeter and integration of polarimetry-based line-integrated density measurements for machine protection of a fusion plant

In this paper, we present the work in the implementation of a new calibration for the JET real-time polarimeter based on the complex amplitude ratio technique and a new self-validation mechanism of data. This allowed easy integration of the polarimetry measurements into the JET plasma density control (gas feedback control) and as well as machine protection systems (neutral beam injection heating safety interlocks). The new addition was used successfully during 2014 JET Campaign and is envisaged that will operate routinely from 2015 campaign onwards in any plasma condition (including ITER relevant scenarios). This mode of operation elevated the importance of the polarimetry as a diagnostic tool in the view of future fusion experiments.
Authors:
; ;  [1] ;  [2] ; ;  [1] ;  [3]
  1. EUROfusion Consortium, JET, Culham Science Centre, Abingdon OX14 3DB (United Kingdom)
  2. (United Kingdom)
  3. (Poland)
Publication Date:
OSTI Identifier:
22482769
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 9; Other Information: (c) 2015 EURATOM; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BEAM INJECTION HEATING; CALIBRATION; CONTROL; ITER TOKAMAK; JET TOKAMAK; OPERATION; PLASMA DENSITY; POLARIMETERS; POLARIMETRY