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Ioannis Pagonakis

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Related publications (37)

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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

A new 3MW ECRH system at 105 GHz for WEST*

Timothy Goodman, Stefano Alberti, Jean-Philippe Hogge, Ioannis Pagonakis, François Jean Gaston Legrand

The aim of the WEST experiments is to master long plasma pulses (1000s) and expose ITER-like tungsten wall to deposited heat fluxes up to 10 MW/m2. To increase the margin to reach the H-Mode and to control W-impurities in the plasma, the installation of an ...

2023

Overview on recent progress in magnetron injection gun theory and design for high power gyrotrons

Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge, Trach-Minh Tran, Ioannis Pagonakis, Jérémy Genoud, François Jean Gaston Legrand

The magnetron injection gun (MIG) is one of the most critical subcomponents in gyrotrons. The electron beam, which has the primary role on the gyrotron operation, is generated and configured at this part of the tube. The electron beam properties determine ...

E D P SCIENCES2019

Electron trapping mechanisms in magnetron injection guns

Jean-Philippe Hogge, Ioannis Pagonakis

A key parameter for the gyrotron operation and efficiency is the presence of trapped electrons. Two electron trapping mechanisms can take place in gyrotrons: (i) the adiabatic trap and (ii) the magnetic potential well. Their influence on the gyrotron opera ...

American Institute of Physics (AIP)2016

Overview of Recent Gyrotron R&D at KIT in View of the EU DEMO

Minh Quang Tran, Ioannis Pagonakis, Carl Love Mikael Råman Vinnå

A large part of the gyrotron R&D activities at Karlsruhe Institute of Technology focus on addressing challenging requirements posed on gyrotrons by the European concept for a demonstration fusion power plant (EU DEMO). This paper reports on the progress of ...

IEEE2018

Status and Experimental Results of the European 1 MW, 170 GHz Industrial CW Prototype Gyrotron for ITER

Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge, Christian Schlatter, Ioannis Pagonakis

In the frame of a collaborative effort between the European GYrotron Consortium (EGYC), the European domestic agency Fusion for Energy (F4E) and the Industrial partner Thales Electron Devices (TED), the first continuous wave (CW) prototype of the EU gyrotr ...

Ieee2016

A new concept for the collection of an electron beam guided by an externally applied magnetic field

Stefano Alberti, Jean-Philippe Hogge, Ioannis Pagonakis

2007

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

Numerical study of the effect of stray magnetic field on the beam quality of the 170 GHz, 2MW gyrotron gun for ITER

Stefano Alberti, Jean-Philippe Hogge, Ioannis Pagonakis

2007

Parameterization Technique for the Preliminary Gun Design of the EU 170GHz 1MW Conventional Cavity gyrotron for ITER

Stefano Alberti, Jean-Philippe Hogge, Ioannis Pagonakis

2008

DEMO-Relevant Gyrotron Research at KIT

Minh Quang Tran, Ioannis Pagonakis

The DEMO-relevant gyrotron research at Karlsruhe Institute of Technology is driven by the European concept for a demonstration fusion reactor (EU DEMO). This paper reports on the recent results of the theoretical and experimental studies towards the develo ...

IEEE2019

Status of development of the 2MW, 170GHz coaxial-cavity gyrotron for ITER

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

2008

Critical Issues Associated with the ITER ECH System

Olivier Sauter, Stefano Alberti, René Chavan, Damien Fasel, Costanza Zucca, Ioannis Pagonakis

2007

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

Th1509U European 170 Ghz 1 Mw Cw Industrial Gyrotron Upgrade

A new 3MW ECRH system at 105 GHz for WEST*

Overview on recent progress in magnetron injection gun theory and design for high power gyrotrons

Electron trapping mechanisms in magnetron injection guns

Overview of Recent Gyrotron R&D at KIT in View of the EU DEMO

Status and Experimental Results of the European 1 MW, 170 GHz Industrial CW Prototype Gyrotron for ITER

A new concept for the collection of an electron beam guided by an externally applied magnetic field

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

Numerical study of the effect of stray magnetic field on the beam quality of the 170 GHz, 2MW gyrotron gun for ITER

Parameterization Technique for the Preliminary Gun Design of the EU 170GHz 1MW Conventional Cavity gyrotron for ITER

DEMO-Relevant Gyrotron Research at KIT

A new concept for the collection of an electron beam configured by an externally applied axial magnetic field

The European 2MW, 170GHz Coaxial Cavity Gyrotron for ITER (Invited paper)

THALES TH1507 140 GHz 1 MW CW Gyrotron for W7-X Stellarator

Status of development of the 2MW, 170GHz coaxial-cavity gyrotron for ITER

Critical Issues Associated with the ITER ECH System