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Jean-Marc Moret

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Publications associées (74)

Using APCS for Plasma Vertical Control at TCV

Basil Duval, Jean-Marc Moret, Stefano Coda, James Paley, Francesco Piras, Federico Alberto Alfredo Felici

Early tokamaks with circular cross-section plasmas were vertically stable in nature and no problems were reported on the control of the vertical position. However, the concept of vertically elongated plasma cross-section, with benefits to the energy confin ...

2011

Real-time physics-model-based simulation of the current density profile in tokamak plasmas

Basil Duval, Timothy Goodman, Jean-Marc Moret, Olivier Sauter, Stefano Coda, James Paley, Federico Alberto Alfredo Felici

A new paradigm is presented to reconstruct the plasma current density profile in a tokamak in real-time. The traditional method of basing the reconstruction on real-time diagnostics combined with a real-time Grad-Shafranov solver suffers from the difficult ...

IOP Publishing Ltd2011

Multiple EC power deposition locations tracking by break-in-slope analysis in TCV plasmas

Timothy Goodman, Jean-Marc Moret, Antoine Pochelon, Loïc Curchod, James Paley, Federico Alberto Alfredo Felici, Joan Decker

Modulation of the amplitude of externally injected electron cyclotron (EC) power is a frequent method used to determine the radial power deposition profile in fusion plasmas. There are many tools to analyze the plasma response to the power modulations unde ...

2011

Prototyping a High-Frequency Inductive Magnetic Sensor Using the Nonconventional, Low-Temperature Co-Fired Ceramic Technology for Use in ITER

Thomas Maeder, René Chavan, Jonathan Bryan Lister, Jean-Marc Moret, Gilbert Tonetti, Duccio Testa, Jérôme Guterl, Matthieu Toussaint

The ITER high-frequency (HF) magnetic sensor is currently intended to be a conventional, Mirnov-type, pickup coil, designed to provide measurements of magnetic instabilities with magnitude as low as |dB|~10e-4G at the position of the sensors and up to freq ...

2011

Measurement of the magnetic field errors on TCV

Jean-Marc Moret, Jonathan Rossel, Francesco Piras

A set of 24 saddle loops is used on the Tokamak à Configuration Variable (TCV) to measure the radial magnetic flux at different toroidal and vertical positions. The new system is calibrated together with the standard magnetic diagnostics on TCV. Based on t ...

Fusion Engineering and Design2010

A 3D multi-mode geometry-independent RMP optimization method and its application to TCV

Yves Martin, Jean-Marc Moret, Jonathan Rossel

Resonant magnetic perturbation (RMP) and error field correction (EFC) produced by toroidally and poloidally distributed coil systems can be optimized if each coil is powered with an independent power supply. A 3D multi-mode geometry-independent Lagrange me ...

IOP2010

The Magnetic Diagnostic Set for ITER

Thomas Maeder, René Chavan, Jonathan Bryan Lister, Jean-Marc Moret, Albert Perez, Gilbert Tonetti, Yannick Sébastien Fournier, Duccio Testa, Francisco Sanchez, Benoît Schaller, Jérôme Guterl, Matthieu Toussaint

This paper presents the multiple set of requirements for the ITER magnetic diagnostic systems and the current status of the various R&D activities performed by the EU partners. ...

2010

The Magnetic Diagnostic Set for ITER

Thomas Maeder, René Chavan, Jonathan Bryan Lister, Jean-Marc Moret, Albert Perez, Gilbert Tonetti, Duccio Testa, Francisco Sanchez, Jérôme Guterl, Matthieu Toussaint

2010

"Snowflake" H Mode in a Tokamak Plasma

Basil Duval, Jean-Marc Moret, Olivier Sauter, Stefano Coda, Benoît Labit, János Márki, Andreas Pitzschke, Francesco Piras

An edge-localized mode (ELM) H-mode regime, supported by electron cyclotron heating, has been successfully established in a snowflake (second-order null) divertor configuration for the first time in the TCV tokamak. This regime exhibits 2 to 3 times lowe ...

The American Physical Society2010

Snowflake divertor experiments on TCV

Basil Duval, Jean-Marc Moret, Olivier Sauter, Stefano Coda, Benoît Labit, János Márki, Andreas Pitzschke, Francesco Piras

An ELMy H-mode 'snowflake' (SF) divertor is established and studied for the first time in the TCV tokamak. The H-mode access and the edge localized mode (ELM) dynamics are compared with a conventional single-null diverted configuration. The SF configuratio ...

Institute of Physics2010

Real time control of plasmas and ECRH systems on TCV

Basil Duval, Timothy Goodman, Yves Martin, Jean-Marc Moret, Stefano Coda, James Paley, Francesco Piras, Federico Alberto Alfredo Felici

Developments in the real time control hardware on Tokamak à Configuration Variable (TCV) coupled with the flexibility of plasma shaping and electron cyclotron (EC) heating and current drive actuators are opening many opportunities to perform real time expe ...

IOP Publishing Ltd2009

Functional Performance Analysis and Optimization for the High-Frequency Magnetic Diagnostic System in ITER - I: Overview of the Results

René Chavan, Jonathan Bryan Lister, Jean-Marc Moret, Duccio Testa, Matthieu Toussaint

The measurement performance of the baseline system design for the ITER high-frequency magnetic diagnostic has been analyzed using an algorithm based on the sparse representation of signals. This algorithm, derived from the SparSpec code [S.Bourguignon et a ...

American Nuclear Society2009

Functional Performance Analysis and Optimization for the High-Frequency Magnetic Diagnostic System in ITER - II: Detailed Overview of the Analysis Method and of the Test Calculations

René Chavan, Jonathan Bryan Lister, Jean-Marc Moret, Duccio Testa, Matthieu Toussaint

The measurement performance of the baseline system design for the ITER high-frequency magnetic diagnostic system and attempts at its optimization have been performed using an innovative method based on the sparse representation of signals and the minimizat ...

American Nuclear Society2009

Magnetic Diagnostics

Jean-Marc Moret

Magnetic diagnostics are essential for the operation and understanding of a magnetic fusion device. Magnetic data are used in real time to measure and control the current, shape, and position of the discharge; the thermal energy of the plasma; the confinin ...

2008

The integration of the new advanced digital plasma control system in TCV

Basil Duval, Xavier Llobet, Yves Martin, Jean-Marc Moret

2008

The effect of MHD noise on the vertical observer in tokamaks

Yves Martin, Jean-Marc Moret, Olivier Sauter, Stefano Coda

2008

Snowflake Divertor Plasmas on TCV

Basil Duval, Jean-Marc Moret, Richard Pitts, Antoine Pochelon, Olivier Sauter, Ivo Furno, Stefano Coda, Costanza Zucca, Francesco Piras, Federico Alberto Alfredo Felici, Attila Bencze

Starting from a standard single null X-point configuration, a second order null divertor (snowflake (SF)) has been successfully created on the Tokamak à Configuration Variable (TCV) tokamak. The magnetic properties of this innovative configuration have bee ...

PPCF2008

Experiments with real-time controlled ECW on the TCV Tokamak

Gilles Arnoux, Stefano Alberti, Basil Duval, Timothy Goodman, Jean-Marc Moret, Stefano Coda, Laurie Porte, Yann Camenen, James Paley

2007

Electron Bernstein wave heating of over-dense H-mode plasmas in the TCV tokamak via O-X-B double mode conversion

Basil Duval, Timothy Goodman, Yves Martin, Jean-Marc Moret, Antoine Pochelon, Stefano Coda, Igor Klimanov, Laurie Porte, Loïc Curchod, Yann Camenen

This paper reports on the first demonstration of electron Bernsteinwave heating (EBWH) by double mode conversion from ordinary (O-) to Bernstein (B-) via the extraordinary (X-) mode in an over-dense tokamak plasma, using low field side launch, achieved in ...

International Atomic Energy Agency2007

The Effect of MHD Noise on the Vertical Observer in Tokamaks

Yves Martin, Jean-Marc Moret, Olivier Sauter, Stefano Coda

2007

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