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Modeling a low voltage ionization chamber based tomography system on ITER.

D Colette1, D Mazon1, R Barnsley2

  • 1CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France.

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|August 6, 2020
PubMed
Summary
This summary is machine-generated.

Soft x-ray tomography using Low Voltage Ionization Chambers (LVICs) shows promise for impurity transport studies on the International Thermonuclear Experimental Reactor (ITER). This research assesses LVIC capabilities in ITER

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Area of Science:

  • Plasma physics
  • Fusion energy research
  • Diagnostic techniques

Background:

  • Soft x-ray (SXR) tomography is crucial for studying impurity transport in tokamaks.
  • The International Thermonuclear Experimental Reactor (ITER) faces a challenging radiative environment, limiting detector choices.
  • Gas detectors, specifically Low Voltage Ionization Chambers (LVICs), are promising solutions for SXR detection in ITER.

Purpose of the Study:

  • To investigate the feasibility of SXR tomography on ITER using LVICs.
  • To develop a synthetic diagnostic for LVICs.
  • To evaluate LVIC performance and limitations in an ITER Deuterium-Tritium (D-T) scenario.

Main Methods:

  • Development of a synthetic diagnostic for LVICs.
  • Application of the synthetic diagnostic to simulate ITER D-T scenarios.
  • Analysis of LVIC tomographic capabilities, including parameter influence and noise effects.

Main Results:

  • The study demonstrates the potential of LVICs for SXR tomography in ITER.
  • The synthetic diagnostic effectively estimates LVIC capabilities.
  • Key LVIC parameters and measurement noise significantly influence tomographic results.

Conclusions:

  • LVICs are a viable technology for SXR tomography in ITER's harsh radiative environment.
  • Further optimization of LVIC parameters and noise reduction is necessary for accurate impurity transport studies.
  • This work provides a foundation for implementing LVIC-based SXR tomography on ITER.