The thermal helium beam edge diagnostic has recently been upgraded at the ASDEX
Upgrade (AUG) tokamak experiment. Line ratio spectroscopy on neutral helium is a valuable …

Validation of 2D and measurements made with Helium imaging spectroscopy in the volume of
the TCV divertor - IOPscience This site uses cookies. By continuing to use this site you agree …

A new thermal helium beam diagnostic has been implemented as plasma edge diagnostic
at the ASDEX Upgrade (AUG) tokamak. The helium beam is built to measure the electron …

Statistical properties of the scrape-off layer plasma fluctuations are studied in ohmically
heated plasmas in the Alcator C-Mod tokamak. For the first time, plasma fluctuations as well …

Abstract a versatile gas injection system and an absolute calibrated spectroscopic
observation system with more than 200 lines-of-sight have been installed in two divertor …

Electron temperature T e and density ne have been measured in the divertor island of
Wendelstein 7-X by means of a new thermal He-beam system utilizing line-ratio …

A beam emission spectroscopy system on thermal helium (He) and neon (Ne) has been set
up at Wendelstein 7-X to measure edge electron temperature and density profiles utilizing …

Thermal helium beam diagnostics using the line ratio spectroscopy method are widely used
to infer temperature and density in fusion-relevant edge plasmas. These diagnostics consist …

Spectra of neutral helium in the visible wavelength range are measured for a discharge in
the Large Helical Device (LHD). The electron temperature (T e) and density (ne) are derived …

The role of turbulence in setting boundary plasma conditions is presently a key uncertainty
in projecting to fusion energy reactors. To robustly diagnose edge turbulence, we develop …