Publications by Joaquim Loizu Cisquella

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

Drift effects in SOLPS-ITER simulations for the TCV divertor upgrade

Basil Duval, Holger Reimerdes, Christian Gabriel Theiler, Joaquim Loizu Cisquella, Marco Wischmeier, Davide Galassi, Kevin Henricus Annemarie Verhaegh, Roberto Maurizio, Mirko Wensing, Hugo De Oliveira, Lorenzo Martinelli

This contribution reports on the progress towards including drift effects in SOLPS-ITER simulations to assess power distribution and detachment onset in the light of the 2019 TCV divertor upgrade [1]. The installation of in-vessel gas baffles (Figure 1a) i ...

2019

A novel, compact, quasi-axisymmetric configuration is presented which exhibits low fast-particle losses and is stable to ideal magnetohydrodynamic (MHD) instabilities. The design has fast-particle loss rates below 8% for flux surfaces within the half-radiu ...

2019

A comparison between a refined two-point model for the limited tokamak SOL and self-consistent plasma turbulence simulations

Paolo Ricci, Joaquim Loizu Cisquella, Christoph Wersal

A refined two-point model is derived from the drift-reduced Braginskii equations for the limited tokamak scrape-off layer (SOL) by balancing the parallel and perpendicular transport of plasma and heat and taking into account the plasma–neutral interaction. ...

Institute of Physics2017

Poloidal asymmetry in the narrow heat flux feature in the TCV scrape-off layer

Basil Duval, Stefano Coda, Ivo Furno, Paolo Ricci, Holger Reimerdes, Benoît Labit, Christian Gabriel Theiler, Joaquim Loizu Cisquella, Jan Horacek, Federico Nespoli, Federico David Halpern, Cedric Kar-Wai Tsui

Heat flux profiles inferred from a reciprocating probe at the outer midplane of the TCV tokamak during inner wall limited discharges feature radial fall-off lengths that shorten near the last closed flux surface (LCFS) consistent with the so-called narrow ...

2017

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To investigate the mechanisms leading to the heat deposition onto the first wall in the Scrape-Off Layer (SOL), we perform dedicated numerical non-linear simulations of the SOL plasma dynamics of a TCV discharge using the GBS code. The simulated parallel h ...

Elsevier Science Bv2017

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A methodology to perform a rigorous verification of Particle-in-Cell (PIC) simulations is presented, both for assessing the correct implementation of the model equations (code verification), and evaluating the numerical uncertainty affecting the simulation ...

2017

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We investigate the question of how plasma currents circulate and close in the scrape-off-layer (SOL) of convection-limited tokamak plasmas. A simplified two-fluid model describes how currents must evacuate charge at the sheaths due to cross-field currents ...

Cambridge University Press2017

The GBS code for tokamak scrape-off layer simulations

Paolo Ricci, Joaquim Loizu Cisquella, Trach-Minh Tran, Sébastien Jolliet, Federico David Halpern, Fabio Riva, Annamaria Mosetto, Christoph Wersal

We describe a new version of GBS, a 3D global, flux-driven plasma turbulence code to simulate the turbulent dynamics in the tokamak scrape-off layer (SOL), superseding the code presented by Ricci et al. (2012) [14]. The present work is driven by the object ...

Elsevier2016

A new generation plasma turbulence fluid code for tokamak scrape-off layer dynamics

Minh Quang Tran, Paolo Ricci, Joaquim Loizu Cisquella, Sébastien Jolliet, Federico David Halpern, Fabio Riva, Annamaria Mosetto, Christoph Wersal, Félix Benedito Clément Musil

Understanding the turbulent dynamics of the tokamak scrape-off layer (SOL) is critical for the safe operation of future fusion reactors. In this region of the tokamak device, the plasma exhausts particles and heat onto plasma facing hardware components, wh ...

2015

Joaquim Loizu Cisquella

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

Drift effects in SOLPS-ITER simulations for the TCV divertor upgrade

A comparison between a refined two-point model for the limited tokamak SOL and self-consistent plasma turbulence simulations

Poloidal asymmetry in the narrow heat flux feature in the TCV scrape-off layer

The GBS code for tokamak scrape-off layer simulations

A new generation plasma turbulence fluid code for tokamak scrape-off layer dynamics

A comparison between a refined two-point model for the limited tokamak SOL and self-consistent plasma turbulence simulations

A new generation plasma turbulence fluid code for tokamak scrape-off layer dynamics

The GBS code for tokamak scrape-off layer simulations

Poloidal asymmetry in the narrow heat flux feature in the TCV scrape-off layer

Drift effects in SOLPS-ITER simulations for the TCV divertor upgrade

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