Publications de Pierre Lavanchy

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

Ambrogio Fasoli, Basil Duval, Alexander Karpushov, Yanis Andrebe, Matthieu Toussaint, Pierre Lavanchy, Jesús Poley Sanjuán, Matteo Vallar

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

Design and upgrades of the TCV fast ion loss detector

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

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

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

Ambrogio Fasoli, Basil Duval, Stefano Coda, Yves Martin, Holger Reimerdes, Alexander Karpushov, Damien Fasel, Umar Sheikh, Matthieu Toussaint, Pierre Lavanchy

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

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, Xavier Llobet, Joan Decker, Yanis Andrebe, Pierre Lavanchy, Cristian Galperti, Philippe Marmillod, Blaise Marlétaz

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

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, Matthieu Toussaint, Pierre Lavanchy, Ugo Siravo, Jérémy Genoud, Jérémie Dubray, 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

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

Basil Duval, Ivo Furno, Patrick Blanchard, Xavier Llobet, Joan Decker, Yanis Andrebe, Pierre Lavanchy, Riccardo Agnello, 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

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

Duccio Testa, Xavier Llobet, Pierre Lavanchy, Matthieu Toussaint, Ugo Siravo, Frédéric Dolizy, Jonathan Bryan Lister, Steve Couturier, Thomas Maeder, Philippe Marmillod

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

Langmuir probe electronics upgrade on the tokamak a configuration variable

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

V-band Doppler backscattering diagnostic in the TCV tokamak

Stefano Coda, Laurie Porte, Pierre Lavanchy, Matthieu Toussaint, 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

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