Publications related to Active and fast particle driven Alfven eigenmodes in Alcator C-Mod

Pedestal Structure and Energy Confinement Studies on TCV

Olivier Sauter, Basil Duval, Patrick Blanchard, Benoît Labit, Christian Gabriel Theiler, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh, Cedric Kar-Wai Tsui

High external gas injection rates are foreseen for future devices to reduce divertor heat loads and this can influence pedestal stability. Fusion yield has been estimated to vary as strongly as

{T}_{e,{\rm{ped}}}^{2}

so an understanding of the underlying ...

2018

Heavy Impurity Confinement in Hybrid Operation Scenario Plasmas with a Rotating 1/1 Continuous Mode

Jonathan Graves, Wilfred Anthony Cooper, David Pfefferlé, Madhusudan Raghunathan

In future tokamaks like ITER with tungsten walls, it is imperative to control tungsten accumulation in the core of operational plasmas, especially since tungsten accumulation can lead to radiative collapse and disruption. We investigate the behaviour of tu ...

IOP Science2017

Physics and performance of the I-mode regime over an expanded operating space on Alcator C-Mod

Christian Gabriel Theiler, Yu Lin

New results on the I-mode regime of operation on the Alcator C-Mod tokamak are reported. This ELM-free regime features high energy confinement and a steep temperature pedestal, while particle confinement remains at L-mode levels, giving stationary density ...

2017

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

20 years of research on the Alcator C-Mod tokamak

Basil Duval, Christian Gabriel Theiler, Yu Lin

The object of this review is to summarize the achievements of research on the Alcator C-Mod tokamak [Hutchinson et al., Phys. Plasmas 1, 1511 (1994) and Marmar, Fusion Sci. Technol. 51, 261 (2007)] and to place that research in the context of the quest for ...

Amer Inst Physics2014

Plasma turbulence simulations of the tokamak scrape-off layer

Paolo Ricci, Trach-Minh Tran, Sébastien Jolliet, Federico David Halpern, Fabio Riva, Christoph Wersal, Augustin Joëssel

In the tokamak scrape-off layer (SOL) the magnetic field lines are open, channeling particles and heat onto plasma facing components, and constraining their lifetime. Therefore, safe operation of future fusion reactors requires an understanding of SOL plas ...

2014

Plasma turbulence in the tokamak scrape-off layer

Paolo Ricci, Joaquim Loizu Cisquella, Mario Ludovico Podesta, Sébastien Jolliet, Federico David Halpern, Fabio Riva, Annamaria Mosetto, Christoph Wersal

In the tokamak scrape-off layer (SOL) the magnetic field lines are open, channeling particles and heat onto plasma facing components, and constraining their lifetime. This is a critical issue for ITER and future devices -- safe operation of fusion devices ...

2014

Aspect ratio effects on limited scrape-off layer plasma turbulence

Paolo Ricci, Joaquim Loizu Cisquella, Sébastien Jolliet, Federico David Halpern, Annamaria Mosetto

The drift-reduced Braginskii model describing turbulence in the tokamak scrape-off layer is written for a general magnetic configuration with a limiter. The equilibrium is then specified for a circular concentric magnetic geometry retaining aspect ratio ef ...

Amer Inst Physics2014

From Series Production of Gyrotrons for W7-X Toward EU-1 MW Gyrotrons for ITER

Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge, Ioannis Pagonakis, Konstantinos Avramidis

Europe is devoting significant joint efforts to develop and to manufacture MW-level gyrotrons for electron cyclotron heating and current drive of future plasma experiments. The two most important ones are the stellarator Wendelstein W7-X at Greifswald and ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Development of the gas puff charge exchange recombination spectroscopy (GP-CXRS) technique for ion measurements in the plasma edge

Christian Gabriel Theiler

A novel charge-exchange recombination spectroscopy (CXRS) diagnostic method is presented, which uses a simple thermal gas puff for its donor neutral source, instead of the typical high-energy neutral beam. This diagnostic, named gas puff CXRS (GP-CXRS), is ...

American Institute of Physics2013

Active and fast particle driven Alfven eigenmodes in Alcator C-Mod

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Pedestal Structure and Energy Confinement Studies on TCV

Heavy Impurity Confinement in Hybrid Operation Scenario Plasmas with a Rotating 1/1 Continuous Mode

Physics and performance of the I-mode regime over an expanded operating space on Alcator C-Mod

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

20 years of research on the Alcator C-Mod tokamak

Plasma turbulence simulations of the tokamak scrape-off layer

Plasma turbulence in the tokamak scrape-off layer

Aspect ratio effects on limited scrape-off layer plasma turbulence

From Series Production of Gyrotrons for W7-X Toward EU-1 MW Gyrotrons for ITER

Development of the gas puff charge exchange recombination spectroscopy (GP-CXRS) technique for ion measurements in the plasma edge

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

Pedestal Structure and Energy Confinement Studies on TCV

Heavy Impurity Confinement in Hybrid Operation Scenario Plasmas with a Rotating 1/1 Continuous Mode

Plasma turbulence simulations of the tokamak scrape-off layer

Plasma turbulence in the tokamak scrape-off layer

Aspect ratio effects on limited scrape-off layer plasma turbulence

20 years of research on the Alcator C-Mod tokamak

Physics and performance of the I-mode regime over an expanded operating space on Alcator C-Mod

Development of the gas puff charge exchange recombination spectroscopy (GP-CXRS) technique for ion measurements in the plasma edge

From Series Production of Gyrotrons for W7-X Toward EU-1 MW Gyrotrons for ITER