Publications by Pierre Lavanchy

Related publications (16)

The JET Alfven Eigenmode Local Manager for the real-time detection and tracking of a frequency-degenerate spectrum of MHD instabilities

Ambrogio Fasoli, Duccio Testa, Patrick Blanchard, Pierre Lavanchy, Theodoros Panis

We present the real-time VME system used to detect and track MHD instabilities, and particularly Alfven Eigenmodes, on the JET tokamak [J.Wesson, Tokamaks, 3rd ed., Oxford Science Publication, Oxford, 2003, p.617]. This system runs on a 1 kHz clock cycle, ...

Elsevier2011

Safety factor profile requirements for electron ITB formation in TCV

Olivier Sauter, Stefano Coda, Ambrogio Fasoli, Basil Duval, Henri Weisen, Jonathan Bryan Lister, Timothy Goodman, Richard Pitts, Yves Martin, Stefano Alberti, Yann Camenen, Antoine Pochelon, Jean-Marc Moret, Sun Hee Kim, Minh Quang Tran, Kurt Appert, Roland Behn, Jan Horacek, Jean-Philippe Hogge, René Chavan, Laurie Porte, Mikhail Maslov, Marco Wischmeier, Markus Siegrist, Alexander Karpushov, Alberto Bottino, Damien Fasel, Emiliano Fable, Petri Nikkola, Philippe Marmillod, Costanza Zucca, Gilbert Tonetti, Andrei Martynov, Andrea Scarabosio, Xavier Llobet, Christian Schlatter, Alessandro Bortolon, Albert Perez, Gilles Arnoux, Yanis Andrebe, Blaise Marlétaz, Alessandro Marinoni, Ugo Siravo, Pierre Lavanchy, Igor Klimanov, Barbora Bruant Gulejová, Pierre-François Isoz, Alexey Zabolotskiy, Jonathan Rossel, Emmanuel Droz, Jean-Claude Magnin, Ilya Pavlov, Karin Schombourg, Pierre Etienne

On the Tokamak a Configuration Variable (TCV), electron internal transport barriers (eITBs) can be formed during a gradual evolution from a centrally peaked to a hollow current profile while all external actuators are held constant. The formation occurs ra ...

2005

Improving spatial and spectral resolution of TCV Thomson scattering

Basil Duval, Patrick Blanchard, René Chavan, Joan Decker, Xavier Llobet, Yanis Andrebe, Matthieu Toussaint, Pierre Lavanchy, Philippe Marmillod, Robert Bertizzolo

The recently completed MST2 upgrade to the Thomson scattering (TS) system on TCV (Tokamak a Configuration Variable) at the Swiss Plasma Center aims to provide an enhanced spatial and spectral resolution while maintaining the high level of diagnostic flexib ...

Iop Publishing Ltd2017

Design and upgrades of the TCV fast ion loss detector

Augustin Charles Roger Philippe Clément, Ambrogio Fasoli, Basil Duval, Alexander Karpushov, Yanis Andrebe, Pierre Lavanchy, Matteo Vallar, Jesús Poley Sanjuán

The Tokamak à Configuration Variable has a unique Fast Ion Loss Detector (FILD) that allows the simultaneous measurement of co- and counter-current fast-ion losses in forward or reverse magnetic field. Recently, multiple novel upgrades have been implemente ...

AIP Publishing2025

New capabilities of the incoherent Thomson scattering diagnostics in the TCV tokamak: divertor and real-time measurements

Basil Duval, Patrick Blanchard, Federico Alberto Alfredo Felici, Joan Decker, Philippe Marmillod, Cristian Galperti, Xavier Llobet, Yanis Andrebe, Blaise Marlétaz, Pierre Lavanchy, Pierre-François Isoz, Steve Couturier, Severino Antonioni

This work reports developments of the incoherent TS diagnostic capabilities in the Tokamak a Configuration Variable (TCV). Their goals are to (i) diagnose the TCV divertor region, and (ii) provide Te and ne profiles of the plasma bulk in real-time. These t ...

IOP PUBLISHING LTD2019

Thomson scattering measurements in the divertor region of the TCV Tokamak plasmas

Basil Duval, Ivo Furno, Patrick Blanchard, Joan Decker, Xavier Llobet, Yanis Andrebe, Blaise Marlétaz, Riccardo Agnello, Pierre Lavanchy, Pierre-François Isoz, Hugo Antoine Georges Arnichand, Jonathan Sylvain Masur, Steve Couturier, Severino Antonioni

In order to better study conventional and alternative divertor configurations, the TCV Tokamak was recently upgraded. In-vessel graphite baffles were installed in the TCV chamber to delimit a separate divertor chamber from the core that required enhanced d ...

2019

First experimental results from the European Union 2 MW coaxial cavity ITER gyrotron prototype

Timothy Goodman, Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge, Laurie Porte, Damien Fasel, Philippe Marmillod, Ioannis Pagonakis, Albert Perez, Blaise Marlétaz, Ugo Siravo, Pierre Lavanchy, Emmanuel Droz

The European Union is working toward providing 2-MW, coaxial-cavity, continuous-wave (cw) 170-GHz gyrotrons for ITER. Their design is based on results,from an experimental preprototype tube having a pulse length of several milliseconds, in operation at For ...

American Nuclear Society2009

First Microsecond Velocity-space Resolved Simultaneous Measurements of Co- and Counter-current Fast-ion Losses in Forward and Reverse Magnetic Field in a Tokamak

Adrien Rayane Clement, Ambrogio Fasoli, Basil Duval, Alexander Karpushov, Yanis Andrebe, Pierre Lavanchy, Matteo Vallar, Matthieu Toussaint, Jesús Poley Sanjuán, Anton Jansen Van Vuuren

A novel Fast Ion Loss Detector was designed, manufactured, installed and commissioned at the Tokamak & aacute; Configuration Variable. This is the first Fast Ion Loss Detector to feature four collimators that enable simultaneous detection of co- and counte ...

IOP Publishing Ltd2025

High-efficiency, long-pulse operation of MW-level dual-frequency gyrotron, 84/126GHz, for the TCV Tokamak

Timothy Goodman, Stefano Alberti, Jean-Philippe Hogge, Damien Fasel, Blaise Marlétaz, Jérémy Genoud, Ugo Siravo, Pierre Lavanchy, Jérémie Dubray, Pierre-François Isoz, Matthieu Toussaint, Miguel Filipe Silva Füglister, Jonathan Sylvain Masur

The first unit of the dual-frequency gyrotron, 84-126GHz/lMW/2s, for the upgrade of the TCV ECH system has been delivered and is presently being commissioned. During a first phase, long-pulse operation (TRF>0.5s) has been achieved and powers in excess of 0 ...

IEEE2019

Upgrade of the neutral beam heating system on the TCV tokamak - second high energy neutral beam

Ambrogio Fasoli, Stefano Coda, Basil Duval, Yves Martin, Holger Reimerdes, Alexander Karpushov, Damien Fasel, Umar Sheikh, Blaise Marlétaz, Frédéric Dolizy, Ugo Siravo, Marcelo Baquero Ruiz, Pierre Lavanchy, Matteo Vallar, Rémy Jacquier, Filippo Bagnato, Jérémie Dubray, Claudia Colandrea, Matthieu Toussaint, Lorenzo Martinelli, Dmytry Mykytchuk, Jesús Poley Sanjuán

The TCV tokamak continues to leverage its unique shaping capabilities, flexible heating systems and modern control system to provide a stepladder approach for extrapolations of experimental results from different ma-chines to ITER and DEMO. TCV's configura ...

ELSEVIER SCIENCE SA2022

V-band Doppler backscattering diagnostic in the TCV tokamak

Stefano Coda, Laurie Porte, Matthieu Toussaint, Pierre Lavanchy, Pedro Andres Molina Cabrera, Nicola Offeddu

A variable configuration V-band heterodyne Doppler back-scattering diagnostic has been recently made operational in the tokamak a configuration variable. This article describes the hardware setup options, flexible quasi-optical launcher antenna, data-analy ...

AMER INST PHYSICS2018

Langmuir probe electronics upgrade on the tokamak a configuration variable

Richard Pitts, Benoît Labit, René Chavan, Christian Gabriel Theiler, Philippe Marmillod, Blaise Marlétaz, Pierre Lavanchy, Hugo De Oliveira

A detailed description of the Langmuir probe electronics upgrade for TCV (Tokamak a Configuration Variable) is presented. The number of amplifiers and corresponding electronics has been increased from 48 to 120 in order to simultaneously connect all of the ...

2019

First Measurement of the Damping Rate of High-n Toroidal Alfvén Eigenmodes in JET Tokamak Plasmas

Ambrogio Fasoli, Laurent Villard, Duccio Testa, René Chavan, Robert Bertizzolo, Frédéric Dolizy, Pierre Lavanchy

2007

LTCC magnetic sensors at EPFL and TCV: Lessons learnt for ITER

Jonathan Bryan Lister, Duccio Testa, Thomas Maeder, Philippe Marmillod, Xavier Llobet, Matthieu Toussaint, Blaise Marlétaz, Frédéric Dolizy, Ugo Siravo, Caroline Marguerite Jacq, Pierre Lavanchy, Aylwin Iantchenko, Steve Couturier, Lorenzo Stipani, Severino Antonioni, Adrien Aymeric Thibault Corne, Christian Moura

Innovative 3D high-frequency magnetic sensors have been designed and manufactured in-house for installation on the Tokamak a Configuration Variable (TCV), and are currently routinely operational. These sensors combine the Low Temperature Co-fired Ceramic ( ...

2019

First Measurement of the Damping Rate of High-n Toroidal Alfvén Eigenmodes in JET Tokamak Plasmas

Ambrogio Fasoli, Laurent Villard, Duccio Testa, René Chavan, Robert Bertizzolo, Frédéric Dolizy, Pierre Lavanchy

2007

Ten Years of Experience in Integrated Control of the Multi-Megawatt

Stefano Coda, Basil Duval, Jonathan Bryan Lister, Timothy Goodman, Stefano Alberti, Jean-Marc Moret, Jean-Philippe Hogge, Damien Fasel, Philippe Marmillod, Blaise Marlétaz, Pierre-François Isoz, Pierre Lavanchy

2007