65 citations · 336 across the 16 of their papers we have counts for
16 papers
High-power TCV scenario for conventional and alternative divertor studies
K. Lee, C. Theiler, M. Carpita +20
Alternative divertor configurations (ADCs) must be evaluated under boundary plasma conditions approaching reactor-level values to be considered a reliable, physics-based solution f…
Ion Temperature Measurements in the MAST-U Divertor During Steady State Plasmas and ELM Burn Through Phenomena
Y. Damizia, S. Elmore, K. Verhaegh +7
This study presents ion temperature (\(T_i\)) measurements in the MAST-U divertor, using a Retarding Field Energy Analyzer (RFEA). Steady state measurements were made during an L-M…
A novel understanding of the role of plasma-molecular kinetics on divertor power exhaust
N. Osborne, K. Verhaegh, D. Moulton +12
During detachment, a buffer of neutral atoms and molecules builds up between the target and the ionising plasma. Collisions between the plasma and the molecules play an important r…
First demonstration of Super-X divertor exhaust control for transient heat load management in compact fusion reactors
B. Kool, K. Verhaegh, G. L. Derks +14
Nuclear fusion could offer clean, abundant energy. However, managing the immense power exhausted from the core fusion plasma towards the divertor remains a major challenge. This is…
Predictive power-sharing scaling law in double-null L-mode plasmas
K. Lim, P. Ricci, L. Stenger +5
The physical mechanisms regulating the power sharing at the outer targets of L-mode double-null (DN) configurations are investigated using nonlinear, flux-driven, three-dimensional…
Divertor shaping with neutral baffling as a solution to the tokamak power exhaust challenge
K. Verhaegh, J. R. Harrison, D. Moulton +20
Exhausting power from the hot fusion core to the plasma-facing components is one of the biggest challenges in fusion energy. The MAST Upgrade tokamak uniquely integrates strong con…
Investigations of atomic \& molecular processes of NBI-heated discharges in the MAST Upgrade Super-X divertor with implications for reactors
K. Verhaegh, J. R. Harrison, B. Lipschultz +20
This experimental study presents an in-depth investigation of the performance of the MAST-U Super-X divertor during NBI-heated operation (up to 2.5 MW) focussing on volumetric ion…
Initial Fulcher band observations from high resolution spectroscopy in the MAST-U divertor
N. Osborne, K. Verhaegh, M. D. Bowden +8
High resolution Fulcher band spectroscopy was used in the MAST-U divertors during Super-X and elongated conventional divertor density ramps with fuelling from the mi…
The role of plasma-atom and molecule interactions on power \& particle balance during detachment on the MAST Upgrade Super-X divertor
Kevin Verhaegh, Bruce Lipschultz, James Harrison +12
This paper shows first quantitative analysis of the detachment processes in the MAST Upgrade Super-X divertor (SXD). We identify an unprecedented impact of plasma-molecular interac…
Investigating the impact of the molecular charge-exchange rate on detached SOLPS-ITER simulations
Kevin Verhaegh, Aelwyn C Williams, David Moulton +7
Plasma-molecular interactions generate molecular ions which react with the plasma and contribute to detachment through molecular activated recombination (MAR), reducing the ion tar…
The role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak
Kevin Verhaegh, Bruce Lipschultz, James Harrison +14
This paper shows experimental results from the TCV tokamak that indicate plasma-molecule interactions involving and possibly play an important role as sinks of energy…
A novel hydrogenic spectroscopic technique for inferring the role of plasma-molecule interaction on power and particle balance during detached conditions
K Verhaegh, B Lipschultz, C Bowman +13
Detachment, an important mechanism for reducing target heat deposition, is achieved through reductions in power, particle and momentum; which are induced through plasma-atom and pl…
A study of the influence of plasma-molecule interactions on particle balance during detachment
K Verhaegh, B Lipschultz, J R Harrison +9
In this work we provide experimental insights into the impact of plasma-molecule interactions on the target ion flux decrease during divertor detachment achieved through a core den…
Novel inferences of ionisation & recombination for particle/power balance during detached discharges using deuterium Balmer line spectroscopy
K. Verhaegh, B. Lipschultz, B. P. Duval +4
The physics of divertor detachment is determined by divertor power, particle and momentum balance. This work provides a novel analysis technique of the Balmer line series to obtain…
An improved understanding of the roles of atomic processes and power balance in divertor target ion current loss during detachment
Kevin Verhaegh, Bruce Lipschultz, Basil Duval +16
The process of divertor detachment, whereby heat and particle fluxes to divertor surfaces are strongly diminished, is required to reduce heat loading and erosion in a magnetic fusi…
Spectroscopic investigations of divertor detachment in TCV
K. Verhaegh, B. Lipschultz, B. P. Duval +13
The aim of this work is to provide an understanding of detachment at TCV with emphasis on analysis of the Balmer line emission. A new Divertor Spectroscopy System has been develope…