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Jean-Philippe Hogge

Cette personne a quitté l’EPFL

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Publications associées (98)

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Development of multimegawatt gyrotrons for fusion plasma heating and current drive

Minh Tâm Tran, Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge

High-frequency gyrotrons; with high output power are mainly used for microwave heating and current drive in plasmas for thermonuclear fusion. The development of high-power gyrotrons; in continuous wave (CW) operation has been in progress for several years ...

2005

Thorough Simulation of High-Power Gyrotron Cavity Interaction in the Hard Excitation Regime

Alexander Edward Barnes, Jean-Philippe Hogge, Jérémy Genoud

Using the new interaction code Phaedra, a thorough and systematic investigation of the operation of a high-power gyrotron cavity in the hard excitation regime took place. The preliminary result of this analysis shows that in the hard excitation regime, the ...

Institute of Electrical and Electronics Engineers Inc.2024

Nanosecond Pulses in a THz Gyrotron Oscillator Operating in a Mode-Locked Self-Consistent Q-Switch Regime

Stefano Alberti, Minh Quang Tran, Jean-Philippe Ansermet, Jean-Philippe Hogge, Jérémy Genoud, Trach-Minh Tran

An experimental study of a nanosecond pulsed regime in a THz gyrotron oscillator operating in a self-consistent Q-switch regime has been carried out. The gyrotron is operated in the TE7,2 transverse mode radiating at a frequency of 260.5 GHz. The 5 W nanos ...

Amer Physical Soc2013

Moment-based, self-consistent linear analysis of gyrotron oscillators

Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge, Trach-Minh Tran

A new model for simulating gyrotron oscillators in the monomode time-dependent linear self-consistent regime is presented. Starting from a nonlinear time-dependent monomode model, the linearization and the following simplification of the model, based on a ...

Amer Inst Physics2014

Third-Order Susceptibility of Silicon Crystals Measured with Millimeter-Wave Gyrotron

Jean-Philippe Hogge, Markus Siegrist

We investigate experimental dependence of the third harmonic generation efficiency in the n-type Si crystals on the geometrical dimensions of the sample, polarization and power of the fundamental wave. The efficiency increases monotonically with the rise o ...

2011

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

Manufacturing and Tests of the European 1 MW, 170 GHz CW Gyrotron Prototype for ITER

Stefano Alberti, Jean-Philippe Hogge

An industrial 1 MW, 170 GHz continuous-wave (CW) gyrotron prototype has been manufactured in 2015 at Thales. The physical design is provided by the European GYrotron Consortium (EGYC) and is supported by the construction and the measurement of a modular sh ...

IEEE2016

Design description and thermo-hydraulic assessment of the steering mirror for the EU DEMO Electron Cyclotron system

Jean-Philippe Hogge, René Chavan, Avelino Mas Sanchez, Anastasia Xydou, Cinta Lucia Marraco Borderas, Daniel Birlan

Six Electron Cyclotron (EC) launchers are currently envisaged to be installed at the Equatorial Ports (EP) of the EU DEMO Tokamak with the purpose of delivering up to 130 MW for plasma bulk heating (BH), thermal instability (TI) control and magnetohydrodyn ...

2025

TWANG-PIC, a novel gyro-averaged one-dimensional particle-in-cell code for interpretation of gyrotron experiments

Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge, Jérémy Genoud, Trach-Minh Tran

A new gyrotron simulation code for simulating the beam-wave interaction using a monomode time-dependent self-consistent model is presented. The new code TWANG-PIC is derived from the trajectory-based code TWANG by describing the electron motion in a gyro-a ...

Amer Inst Physics2015

Excitation of parasitic modes in gyrotrons with fast voltage rise

Jean-Philippe Hogge

American Institute of Physics (AIP)2008

Pre-conceptual design of the steering mirror for the DEMO electron cyclotron heating system

Timothy Goodman, Jean-Philippe Hogge, René Chavan, Avelino Mas Sanchez, Anastasia Xydou, Cinta Lucia Marraco Borderas, Daniel Birlan

An Electron Cyclotron (EC) Heating and Current Drive (HCD) system will be installed in the EU DEMO Tokamak to provide plasma heating and stabilization by coupling up to 130 MW of mm-wave power into specific regions of the plasma. The mm -waves will be gene ...

Elsevier Science Sa2024

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

Stacked rings for terahertz wave-guiding

Stefano Alberti, Jean-Philippe Ansermet, Jean-Philippe Hogge, Alessandro Macor, Emile Jacques de Rijk

We demonstrate the construction of corrugated waveguides using stacked rings to propagate terahertz frequencies. The waveguide allows propagation of the same fundamental mode as an optical-fiber, namely, the H E11 mode. This simple concept opens the way fo ...

American Institute of Physics2011

Experimental results of the 1-MW, 140-GHz, CW gyrotron for W7-X

Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge

2006

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

Note: Stacked rings for terahertz wave-guiding

Stefano Alberti, Jean-Philippe Ansermet, Jean-Philippe Hogge, Emile Jacques de Rijk, Alessandro Macor

We demonstrate the construction of corrugated waveguides using stacked rings to propagate terahertz frequencies. The waveguide allows propagation of the same fundamental mode as an optical-fiber, namely, the HE11 mode. This simple concept opens the way for ...

American Institute of Physics2011