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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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High-resolution charge exchange measurements at ASDEX Upgrade.

E Viezzer1, T Pütterich, R Dux

  • 1Max-Planck-Institut für Plasmaphysik, EURATOM Association, Boltzmannstr. 2, 85748 Garching, Germany. Eleonora.Viezzer@ipp.mpg.de

The Review of Scientific Instruments
|November 8, 2012
PubMed
Summary
This summary is machine-generated.

Upgraded charge exchange recombination spectroscopy (CXRS) diagnostics at ASDEX Upgrade provide high-resolution measurements of plasma properties. These enhancements enable faster, more detailed analysis of impurity ion temperature, density, and rotation for fusion energy research.

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Area of Science:

  • Plasma Physics
  • Fusion Energy Research
  • Spectroscopy

Background:

  • Advanced diagnostics are crucial for understanding and controlling fusion plasmas.
  • Charge Exchange Recombination Spectroscopy (CXRS) is a key technique for measuring plasma properties.

Purpose of the Study:

  • To upgrade and extend CXRS diagnostics at ASDEX Upgrade for enhanced plasma measurements.
  • To improve spatial and temporal resolution for impurity ion diagnostics.

Main Methods:

  • Refurbishment of the core toroidal CXRS diagnostic to increase signal levels.
  • Installation of a new CXRS system for poloidal impurity ion rotation measurements.
  • Implementation of a new in situ wavelength correction method for calibration.

Main Results:

  • Achieved shorter exposure times (down to 3.5 ms) for core measurements.
  • Enabled simultaneous measurements of multiple impurities with improved spatial resolution (down to 5 mm).
  • Obtained absolute measurements of poloidal impurity ion rotation with high accuracy (<1.5 km/s uncertainty).

Conclusions:

  • The upgraded CXRS systems provide high-resolution, accurate measurements of plasma profiles.
  • Consistency checks show good agreement across all CXRS systems, validating the enhancements.
  • These advancements contribute to better plasma control and understanding in fusion devices.