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Langmuir probe and infrared thermography measurements of wide and narrow heat flux profiles in the ST40 tokamak
T. Brewer, X. Zhang, C. Marsden +11
Very narrow heat flux profiles have been observed on ST40 with decay lengths in the near scrape-off-layer (SOL) of ~1~mm in H-mode plasmas. Measurements from divertor…
Infra-red thermographic inversion in ST40
Matteo Moscheni, Erik Maartensson, Matthew Robinson +8
Infra-red (IR) thermography is an essential diagnostic tool for understanding the edge plasma behavior in fusion devices. In this work, we present a new in-house numerical tool, Fu…
Inferring the scrape-off layer heat flux width in a divertor with a low degree of axisymmetry
C. Marsden, X. Zhang, M. Moscheni +7
Plasma facing components (PFCs) in the next generation of tokamak devices will operate in challenging environments, with heat loads predicted to exceed 10 MWm. The magnitude…
Experimental observations of bifurcated power decay lengths in the near Scrape-Off Layer of tokamak plasmas
X Zhang, C Marsden, M Moscheni +14
The scrape-off layer parallel heat flux decay lengths measured at ST40, a high field, low aspect ratio spherical tokamak, have been observed to bifurcate into two groups. The wide…