Publications de Jean-Daniel Landis

Gas puff imaging on the TCV tokamak

Basil Duval, Christian Gabriel Theiler, Cristian Galperti, Jean-Daniel Landis, Yanis Andrebe, Olivier Claude Martin Février, Robert Bertizzolo, Curdin Tobias Wüthrich, Nicola Offeddu

We present the design and operation of a suite of Gas Puff Imaging (GPI) diagnostic systems installed on the Tokamak a Configuration Variable (TCV) for the study of turbulence in the plasma edge and Scrape-Off-Layer (SOL). These systems provide the unique ...

AIP Publishing2022

Nearing final design of the ITER EC H&CD Upper Launcher

Olivier Sauter, Timothy Goodman, René Chavan, Jean-Daniel Landis, Robert Bertizzolo, Matteo Vagnoni, Florian Ramseyer, Emanuele Poli

The ITER ECRH system consists of 24 gyrotrons with up to 24 MW installed millimeter wave heating power at 170 GHz, power supplies, control system, transmission lines, one Equatorial and the four Upper Launchers. With its high frequency and small beam focus ...

ELSEVIER SCIENCE SA2019

Design status of the double Closure Plate Sub-Plate concept for the ITER Electron Cyclotron Upper Launcher

Timothy Goodman, René Chavan, Jean-Daniel Landis, Matteo Vagnoni, Avelino Mas Sanchez, Florian Ramseyer

The Closure Plate Sub-Plate (CPSP), which defines the border between ex-vessel and in-vessel components of the Electron Cyclotron Upper Launcher (EC UL), bundles the waveguides into a sub-assembly which can be manipulated separately from the UL Port Plug ( ...

2018

Status Status of the final design of the EC UPP launcher

René Chavan, Jean-Daniel Landis

Four EC H&CD (Electron Cyclotron Heating and Current Drive) launchers will be installed into the upper ports #12, #13, #15 and #16 in ITER. Beside plasma heating their main purpose is to counteract plasma instabilities by injecting up to 20 MW of microwave ...

ELSEVIER SCIENCE SA2018

Thermal mechanical analyses of the mm-wave miter bend for the ITER electron cyclotron upper launcher first confinement system

Timothy Goodman, René Chavan, Jean-Daniel Landis, Matteo Vagnoni, Avelino Mas Sanchez, Florian Ramseyer

Each of the 4 ITER Electron Cyclotron Heating Upper Launcher (ECHUL) features 8 transmission lines used to inject microwave power of up to 1.31 MW (at the source) per line, into the plasma at 170 GHz. The microwaves are guided from the gyrotrons via (empty ...

ELSEVIER SCIENCE SA2018

Mechanical analyses of the ITER electron cyclotron upper launcher first confinement system

Timothy Goodman, René Chavan, Jean-Daniel Landis, Avelino Mas Sanchez

2017

Characterization of metallic seals to be used in the waveguide flange coupling of the ITER electron cyclotron upper launcher first confinement system

Timothy Goodman, René Chavan, Jean-Daniel Landis, Robert Bertizzolo

2017

Thermal analyses of the mm-waveguide cooling concepts for the ITER electron cyclotron upper launcher first confinement system

Timothy Goodman, René Chavan, Jean-Daniel Landis, Avelino Mas Sanchez, Robert Bertizzolo

2017

Mechanical analyses of the waveguide flange coupling for the first confinement system of the ITER electron cyclotron upper launcher

Timothy Goodman, René Chavan, Jean-Daniel Landis, Robert Bertizzolo

The four electron cyclotron (EC) upper port antennas (or "upper launchers" -UL) will be used to drive current locally inside magnetic islands located at the q= 2 (or smaller) rational surfaces in order to stabilize neoclassical tearing modes (NTMs), as wel ...

Elsevier Science Sa2016

Tunable radiator for small satellite application

Jean-Daniel Landis, Frédéric Bongard, Pedro Robustillo Bayon, Nevena Saponjic, Tomislav Debogovic, Mikaël Krummen

A tunable radiator for space application has been developed to meet stringent requirements in terms of electrical and environmental specifications but also low mass, simple manufacturing and low cost. The element is based on the folded PIFA antenna, with s ...

2016