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Title: X-ray crystal spectrometer upgrade for ITER-like wall experiments at JET

The high resolution X-Ray crystal spectrometer at the JET tokamak has been upgraded with the main goal of measuring the tungsten impurity concentration. This is important for understanding impurity accumulation in the plasma after installation of the JET ITER-like wall (main chamber: Be, divertor: W). This contribution provides details of the upgraded spectrometer with a focus on the aspects important for spectral analysis and plasma parameter calculation. In particular, we describe the determination of the spectrometer sensitivity: important for impurity concentration determination.
Authors:
 [1] ;  [2] ;  [3] ; ; ;  [4] ;  [4] ;  [5] ;  [6] ; ; ; ; ; ;  [7] ;  [8] ; ; ; ;  [1] more »;  [9] ;  [10] ; « less
  1. JET-EFDA, Culham Science Centre, Abingdon OX14 3DB (United Kingdom)
  2. (Netherlands)
  3. National Centre for Nuclear Research, Andrzeja Sołtana 7, 05-400 Otwock (Poland)
  4. Institute of Plasma Physics and Laser Microfusion, Hery 23, 01-497 Warsaw (Poland)
  5. (France)
  6. Institute of Nuclear Physics PAN, ul. Radzikowskiego 152, 31-342 Kraków (Poland)
  7. Institute of Electronic Systems, Warsaw University of Technology, 00-665 Warsaw (Poland)
  8. Faculty of Physics, Institute of Experimental Physics, Warsaw University, 00-681 Warsaw (Poland)
  9. EFDA-CSU, Culham Science Centre, Abingdon OX14 3DB (United Kingdom)
  10. (Portugal)
Publication Date:
OSTI Identifier:
22308953
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 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; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CONCENTRATION RATIO; DIVERTORS; FIRST WALL; ITER TOKAMAK; JET TOKAMAK; PLASMA; PLASMA IMPURITIES; RESOLUTION; SENSITIVITY; TUNGSTEN; X-RAY SPECTROMETERS