Publications by Marco Wischmeier

The role of isotope mass and transport for H-mode access in tritium containing plasmas at JET with ITER-like wall

Haomin Sun, Henri Weisen, Javier García Hernández, Marco Wischmeier, Nicola Vianello, Mikhail Maslov

The required heating power, P-LH, to access the high confinement regime (H-mode) in tritium containing plasmas is investigated in JET with ITER-like wall at a toroidal magnetic field of B-t = 1.8 T and a plasma current of I-p = 1.7 MA. PLH, also referred t ...

IOP Publishing Ltd2023

The X-Point radiating regime at ASDEX Upgrade and TCV

Holger Reimerdes, Christian Gabriel Theiler, Umar Sheikh, Artur Perek, Marco Wischmeier, Bernhard Sieglin

Future fusion reactors require a safe, steady-state divertor operation. With deep divertor detachment, which is typically induced by impurity seeding, the radiation concentrates in a small region at the X-point or on closed flux surfaces above the X-point. ...

ELSEVIER2023

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SOLPS-ITER simulations of the European DEMO reactor with a Super-X divertor, which has larger major radius at the outer target and increased connection length, show an increased operational space for divertor power exhaust compared to the conventional sing ...

IOP PUBLISHING LTD2021

X-point radiation, its control and an ELM suppressed radiating regime at the ASDEX Upgrade tokamak

Marco Wischmeier, Bernhard Sieglin

Future fusion reactors require a safe, steady state divertor operation. The required detached operation is, in tokamaks with metal walls, usually achieved by seeding of impurities, such as nitrogen. With strong seeding levels, the dominant radiation is emi ...

IOP PUBLISHING LTD2021

Scoping the characteristics and benefits of a connected double-null configuration for power exhaust in EU-DEMO

Holger Reimerdes, Marco Wischmeier, Mirko Wensing

A double-null configuration is being considered for the EU-DEMO, due to its potential benefits for power exhaust arising from the use of two active divertors and magnetically disconnected low- and high-field sides. Using systematic parameter scans in fluid ...

ELSEVIER2021

Preliminary analysis of alternative divertors for DEMO

Paolo Ricci, Holger Reimerdes, Marco Wischmeier, Fabio Riva, Mirko Wensing

A physics and engineering analysis of alternative divertor configurations is carried out by examining benefits and problems by comparing the baseline single null solution with a Snowflake, an X- and a Super-X divertor. It is observed that alternative confi ...

ELSEVIER2021

SOLPS-ITER validation with TCV L-mode discharges

Basil Duval, Patrick Blanchard, Holger Reimerdes, Christian Gabriel Theiler, Marcelo Baquero Ruiz, Artur Perek, Sophie Danielle Angelica Gorno, Claudia Colandrea, Marco Wischmeier, Cedric Kar-Wai Tsui, Kevin Henricus Annemarie Verhaegh, Mirko Wensing, Hugo De Oliveira, Filippo Bagnato, Lorenzo Martinelli

This work presents a quantitative test of SOLPS-ITER simulations against tokamak a configuration variable (TCV) L-mode experiments. These simulations account for drifts, currents, kinetic neutrals, and carbon impurities providing the most complete edge tra ...

AMER INST PHYSICS2021

Advances in the physics studies for the JT-60SA tokamak exploitation and research plan

Stefano Coda, Javier García Hernández, Marco Wischmeier, Matteo Vallar, Kenji Tanaka, Aylwin Iantchenko, Samuele Mazzi, Leonardo Pigatto

JT-60SA, the largest tokamak that will operate before ITER, has been designed and built jointly by Japan and Europe, and is due to start operation in 2020. Its main missions are to support ITER exploitation and to contribute to the demonstration fusion rea ...

IOP PUBLISHING LTD2020

X-point potential well formation in diverted tokamaks with unfavorable magnetic field direction

Basil Duval, Holger Reimerdes, Joaquim Loizu Cisquella, Marco Wischmeier, Mirko Wensing

Fluid simulations of the boundary of fusion plasmas predict the formation of an electric potential well in the vicinity of the X-point in detached divertor conditions with Bt in the unfavorable direction for H-mode access. This potential well arises when t ...

2020

Experimental verification of X-point potential well formation in unfavorable magnetic field direction

Basil Duval, Holger Reimerdes, Christian Gabriel Theiler, Joaquim Loizu Cisquella, Sophie Danielle Angelica Gorno, Claudia Colandrea, Marco Wischmeier, Cedric Kar-Wai Tsui, Mirko Wensing, Hugo De Oliveira

Recent TCV experiments confirm the predicted formation of an electric potential well, below the magnetic X-point, in configurations with unfavorable

B_t

field direction (ion

\nabla B

drift away from the divertor), that substantially reshapes the typica ...

2020

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The role of isotope mass and transport for H-mode access in tritium containing plasmas at JET with ITER-like wall

The X-Point radiating regime at ASDEX Upgrade and TCV

X-point radiation, its control and an ELM suppressed radiating regime at the ASDEX Upgrade tokamak

Scoping the characteristics and benefits of a connected double-null configuration for power exhaust in EU-DEMO

Preliminary analysis of alternative divertors for DEMO

SOLPS-ITER validation with TCV L-mode discharges

Advances in the physics studies for the JT-60SA tokamak exploitation and research plan

X-point potential well formation in diverted tokamaks with unfavorable magnetic field direction

Experimental verification of X-point potential well formation in unfavorable magnetic field direction

The role of isotope mass and transport for H-mode access in tritium containing plasmas at JET with ITER-like wall

The X-Point radiating regime at ASDEX Upgrade and TCV

X-point potential well formation in diverted tokamaks with unfavorable magnetic field direction

X-point radiation, its control and an ELM suppressed radiating regime at the ASDEX Upgrade tokamak

Scoping the characteristics and benefits of a connected double-null configuration for power exhaust in EU-DEMO

Preliminary analysis of alternative divertors for DEMO

SOLPS-ITER validation with TCV L-mode discharges

Advances in the physics studies for the JT-60SA tokamak exploitation and research plan

Experimental verification of X-point potential well formation in unfavorable magnetic field direction