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Advanced Simulation of ITER Core X-ray Crystal Spectroscopy.

Xinyi Jin1, Zhifeng Cheng2, Junli Zhang1

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This summary is machine-generated.

The X-Ray Simulation Analysis (XRSA) code was updated to include auto-focusing and polarization effects for the ITER Core X-Ray Crystal Spectroscopy (XRCS-Core) diagnostic. These updates improve the accuracy of modeling the dual-reflection system performance.

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Area of Science:

  • Plasma Physics
  • Spectroscopy
  • Materials Science

Background:

  • The ITER Core X-Ray Crystal Spectroscopy (XRCS-Core) diagnostic requires accurate modeling for high spectral resolution measurements.
  • The diagnostic utilizes a dual-reflection configuration with Highly Oriented Pyrolytic Graphite (HOPG) and analyzing crystals.

Purpose of the Study:

  • To enhance the X-Ray Simulation Analysis (XRSA) code for the XRCS-Core diagnostic.
  • To incorporate auto-focusing and polarization effects into the simulation code.
  • To accurately model the spectral performance of the XRCS-Core system.

Main Methods:

  • Developed and updated the X-Ray Simulation Analysis (XRSA) code.
  • Implemented ray-tracing and mixed-code simulation techniques.
  • Incorporated auto-focusing for HOPG and polarization effects.

Main Results:

  • Updated XRSA code provides more accurate modeling of the XRCS-Core system.
  • Polarization significantly impacts the performance of the dual-reflection system.
  • Combined effects of polarization and system layout cause performance variations across channels.

Conclusions:

  • The updated XRSA code accurately simulates the spectral performance of the XRCS-Core diagnostic.
  • Polarization is a critical factor in the dual-reflection system's performance.
  • Further analysis is needed to understand performance variations due to system layout and polarization.