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Francisco Sanchez

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Related publications (49)

Page 2 of 3

Progress on the ITER ECRH upper launcher steering mirror identification and control

René Chavan, Federico Alberto Alfredo Felici, Francisco Sanchez, Robert Bertizzolo, Jean-Daniel Landis, Frédéric Dolizy

The main objective of the ITER ECRH upper launcher (UL) is to control magnetohydrodynamic activity, in particular neoclassical tearing modes (NTMs), by driving several MW of EC Current near the q = 1, 3/2, 2 flux surfaces, where NTMs are expected to occur. ...

Elsevier2009

Recent experiments with the European 1MW, 170GHz industrial CW and short-pulse gyrotrons for ITER

Minh Quang Tran, Stefano Alberti, Jean-Philippe Hogge, Francisco Sanchez, Christian Schlatter, Ioannis Pagonakis, Jérémy Genoud

The European Gyrotron Consortium (EGYC) is developing the European 1 MW, 170 GHz Continuous Wave (CW) industrial prototype gyrotron for ITER in cooperation with Thales Electron Devices (TED) and Fusion for Energy (F4E). This conventional, hollow-cavity gyr ...

ELSEVIER SCIENCE SA2019

Th1509U European 170 Ghz 1 Mw Cw Industrial Gyrotron Upgrade

Stefano Alberti, Jean-Philippe Hogge, Francisco Sanchez, Ioannis Pagonakis, François Jean Gaston Legrand

This paper describes the status on the upgrade of the first European gyrotron prototype for ITER, manufactured by Thales. The upgraded prototype, TH1509U, is now being tested to verify the performance improvements and to assess the compliance with ITER ECR ...

IEEE2021

Progress on the ITER Electron Cyclotron Heating and Current Drive Upper Launcher Steering Mirror Control System

Timothy Goodman, René Chavan, Federico Alberto Alfredo Felici, Francisco Sanchez, Robert Bertizzolo, Jean-Daniel Landis, Frédéric Dolizy

The ITER ECRH upper launcher (UL) uses a steering mechanism assembly (SMA) to steer the beams in the appropriate location for controlling magnetohydrodynamic (MILD) activity in the plasma (NTMs and sawtooth oscillations). ...

IEEE2009

Progress on the design and manufacturing of the mirrors for the ITER Electron Cyclotron Heating and Current Drive upper launcher

René Chavan, Francisco Sanchez, Robert Bertizzolo, Jean-Daniel Landis

Four of the 16 ITER upper port plugs will be devoted to electron cyclotron resonance heating (ECRH) in order to control the magneto-hydrodynamic (MHD) instabilities. ...

IEEE2009

Introducing the CTA concept

Christophe Bauer, Francisco Sanchez, Mathieu Ribordy, Xiaoqing Zhou, Reto Frei, Etienne Antoine Julien Moulin, Thomas Günther Bretz, Michael Werner, Steve Couturier

The Cherenkov Telescope Array (CTA) is a new observatory for very high-energy (VHE) gamma rays. CTA has ambitions science goals, for which it is necessary to achieve full-sky coverage, to improve the sensitivity by about an order of magnitude, to span abou ...

Elsevier Science Bv2013

Design and material selection for a pressure controlled bellows actuator for the angular positioning of the steering mirror in the ITER ECRH upper port plug

René Chavan, Francisco Sanchez, Robert Bertizzolo, Jean-Daniel Landis

2007

Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy

Christophe Bauer, Francisco Sanchez, Mathieu Ribordy, Etienne Antoine Julien Moulin, Thomas Günther Bretz, Steve Couturier

Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray astronomy has a huge potential in astrophysics, particle physics and cosmol ...

2011

European 1 MW, 170 GHz CW Gyrotron Prototype for ITER - long-pulse operation at KIT -

Jean-Philippe Hogge, Francisco Sanchez, Ioannis Pagonakis

The upgraded EU 1 MW, 170 GHz continuous wave (CW) industrial prototype gyrotron (TH1509U) for Electron Cyclotron Resonance Heating and Current Drive (ECRH&CD) in ITER was tested at the Karlsruhe Institute of Technology (KIT). The gyrotron surpassed the pe ...

IEEE2022

The physics performance of the front steering launcher for the ITER ECRH upper port

Olivier Sauter, René Chavan, Francisco Sanchez, Petri Nikkola

2005

The Magnetic Diagnostic Set for ITER

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

2010

An alternative ECRH front steering launcher for the ITER upper port

René Chavan, Francisco Sanchez

Presently, a remote steering (RS) antenna [C.P. Moeller, A method of remotely steering a microwave beam launched from a highly overmoded corrugated waveguide, in: Proceedings of the 23rd International Conference on IRMMW, Colchester, UK, 1998] is envisione ...

2005

Design status of the ITER ECH upper launcher steering mirror mechanism

René Chavan, Francisco Sanchez, Robert Bertizzolo, Jean-Daniel Landis

The ITER ECRH upper port antenna (or launcher) will be used to drive current locally for stabilising the neoclassical tearing mode (NTM)) by depositing mm-wave power inside of the island which forms on the q=3/2 or 2 rational magnetic flux surfaces and con ...

2007

mm-wave Optical System of the ITER Upper Port EC Launcher

René Chavan, Francisco Sanchez, Robert Bertizzolo, Jean-Daniel Landis, Frédéric Dolizy

2007

Critical design issues of the ITER ECH front steering upper launcher

René Chavan, Francisco Sanchez, Robert Bertizzolo, Jean-Daniel Landis, Frédéric Dolizy, Joseph Duron

2008

The Magnetic Diagnostic Set for ITER

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

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 design and physics performance of the ITER upper port ECH front steering launcher

René Chavan, Francisco Sanchez

2005

Design of the critical components in the ITER ECH upper launcher steering mechanism

René Chavan, Francisco Sanchez, Robert Bertizzolo, Jean-Daniel Landis

2007

Design status of ITER ECH upper launcher mirrors

René Chavan, Francisco Sanchez, Jean-Daniel Landis, Joseph Duron

The ITER ECH upper launcher is devoted to directing up to 8 2NM beams per port plug over half of the plasma cross section. A focusing mirror is used to achieve a very narrow deposition profile to stabilize MHD activity such as the neoclassical tearing mode ...

2007

A frictionless steering mechanism for the front steering ECCD ITER upper port launcher

René Chavan, Francisco Sanchez

2005