Highly charged ions in magnetic fusion plasmas: research opportunities and diagnostic necessities

P Beiersdorfer - Journal of Physics B: Atomic, Molecular and …, 2015 - iopscience.iop.org
Highly charged ions play a crucial role in magnetic fusion plasmas. These plasmas are
excellent sources for producing highly charged ions and copious amounts of radiation for …

Tungsten transport in JET H-mode plasmas in hybrid scenario, experimental observations and modelling

C Angioni, P Mantica, T Pütterich, M Valisa… - Nuclear …, 2014 - iopscience.iop.org
The behaviour of tungsten in the core of hybrid scenario plasmas in JET with the ITER-like
wall is analysed and modelled with a combination of neoclassical and gyrokinetic codes. In …

Non-local heat transport, rotation reversals and up/down impurity density asymmetries in Alcator C-Mod ohmic L-mode plasmas

JE Rice, C Gao, ML Reinke, PH Diamond… - Nuclear …, 2013 - iopscience.iop.org
Several seemingly unrelated effects in Alcator C-Mod ohmic L-mode plasmas are shown to
be closely connected: non-local heat transport, core toroidal rotation reversals, energy …

Core impurity transport in Alcator C-Mod L-, I-and H-mode plasmas

JE Rice, ML Reinke, C Gao, NT Howard… - Nuclear …, 2015 - iopscience.iop.org
Core impurity transport has been investigated for a variety of confinement regimes in Alcator
C-Mod plasmas from x-ray emission following injection of medium and high Z materials. In …

Investigation of the critical edge ion heat flux for LH transitions in Alcator C-Mod and its dependence on BT

M Schmidtmayr, JW Hughes, F Ryter, E Wolfrum… - Nuclear …, 2018 - iopscience.iop.org
This paper presents investigations on the role of the edge ion heat flux for transitions from L-
mode to H-mode in Alcator C-Mod. Previous results from the ASDEX Upgrade tokamak …

Inference of experimental radial impurity transport on Alcator C-Mod: Bayesian parameter estimation and model selection

F Sciortino, NT Howard, ES Marmar, T Odstrcil… - Nuclear …, 2020 - iopscience.iop.org
We present a fully Bayesian approach for the inference of radial profiles of impurity transport
coefficients and compare its results to neoclassical, gyrofluid and gyrokinetic modeling …

Upgrades of imaging x-ray crystal spectrometers for high-resolution and high-temperature plasma diagnostics on EAST

B Lyu, FD Wang, XY Pan, J Chen, J Fu, YY Li… - Review of Scientific …, 2014 - pubs.aip.org
Upgrade of the imaging X-ray crystal spectrometers continues in order to fulfill the high-
performance diagnostics requirements on EAST. For the tangential spectrometer, a new …

Multi-channel transport experiments at Alcator C-Mod and comparison with gyrokinetic simulations

AE White, NT Howard, M Greenwald, ML Reinke… - Physics of …, 2013 - pubs.aip.org
Multi-channel transport experiments have been conducted in auxiliary heated (Ion Cyclotron
Range of Frequencies) L-mode plasmas at Alcator C-Mod [Marmar and Alcator C-Mod …

Prospects of X-ray imaging spectrometers for impurity transport: Recent results from the stellarator Wendelstein 7-X

A Langenberg, NA Pablant, T Wegner… - Review of Scientific …, 2018 - pubs.aip.org
This paper reports on the design and the performance of the recently upgraded X-ray
imaging spectrometer systems, X-ray imaging crystal spectrometer and high resolution X-ray …

Quasi-coherent fluctuations limiting the pedestal growth on Alcator C-Mod: experiment and modelling

A Diallo, JW Hughes, SG Baek, B LaBombard… - Nuclear …, 2015 - iopscience.iop.org
Performance predictions for future fusion devices rely on an accurate model of the pedestal
structure. The candidate for predictive pedestal structure is EPED, and it is imperative to test …