Publication

Novel soft x-ray multi-energy camera to study thermal plasmas on WEST

2026

Abstract

A multi-energy soft x-ray (SXR) pinhole camera has been built, calibrated and deployed on the WEST tokamak to aid the study of thermal plasmas. This novel imaging diagnostic technique employs a 2D pixelated x-ray detector in which the lower energy threshold for photon detection can be adjusted independently on each pixel. This innovation allows the simultaneous measurement of x-rays with space, time and energy resolution. Measurements at lower energy (2-6 keV) dominated by tungsten line emission are used to estimate the tungsten concentration and the plasma ΔZeff. Measurements at higher energy (11-18 keV), where only continuum emission is present, are employed to infer the plasma electron temperature. Other applications of this powerful diagnostic include the determination of the plasma SXR centroid vertical position, characterization of tungsten UFOs and various real-time measurements.

Official source

https://infoscience.epfl.ch/entities/publication/9a41da6e-d68c-4eb7-a327-3b7ba7b664d8

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9a41da6e-d68c-4eb7-a327-3b7ba7b664d8

About this result

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