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Updated: Apr 20, 2026

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
Published on: August 25, 2016
X-ray crystal spectrometer upgrade for ITER-like wall experiments at JET
A E Shumack1, J Rzadkiewicz2, M Chernyshova3
1JET-EFDA, Culham Science Centre, Abingdon OX14 3DB, United Kingdom.
Abstract:
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.
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