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Title: Measurement and simulation of ICRF wave intensity with a recalibrated phase contrast imaging diagnostic on Alcator C-Mod

Waves in the ion cyclotron range of frequencies (ICRF) are one of the major tools to heat fusion plasmas. Full-wave simulations are essential to predict the wave propagation and absorption quantitatively, and it is important that these codes be validated against actual experimental measurements. In this work, the absolute intensity of the ICRF waves previously measured with a phase contrast imaging diagnostic was recalibrated and compared once more with full-wave predictions. In the earlier work, significant discrepancies were found between the measured and the simulated mode converted wave intensity [N. Tsujii et al., Phys. Plasmas 19, 082508]. With the new calibration of the detector array, the measured mode converted wave intensity is now in much better agreement with the full-wave predictions. The agreement is especially good for comparisons performed close to the antenna.
Authors:
 [1] ; ; ; ; ; ; ;  [2] ;  [3] ;  [4] ;  [5]
  1. The University of Tokyo, Kashiwa (Japan)
  2. MIT Plasma Science and Fusion Center, Cambridge, Massachusetts (United States)
  3. XCEL Engineering, Oak Ridge, Tennessee (United States)
  4. Oak Ridge National Laboratory, Oak Ridge, Tennessee (United States)
  5. CompX, Del Mar, California (United States)
Publication Date:
OSTI Identifier:
22496196
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1689; Journal Issue: 1; Conference: 21. topical conference on radio frequency power in plasmas, Lake Arrowhead, CA (United States), 27-29 Apr 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; ALCATOR DEVICE; ANTENNAS; CALIBRATION; COMPARATIVE EVALUATIONS; FORECASTING; ICR HEATING; IMAGES; ION CYCLOTRON-RESONANCE; PLASMA; SIMULATION; WAVE PROPAGATION