Publications de Avelino Mas Sanchez

Conceptual design proposal for the EU-DEMO electron cyclotron ex-vessel waveguide system with enhanced remote maintainability

René Chavan, Jean-Philippe Hogge, Avelino Mas Sanchez, Anastasia Xydou

The EUropean DEMOnstration power plant (EU-DEMO) project, a EUROfusion initiative, seeks to advance fusion power technology by developing a reliable Electron Cyclotron (EC) heating and current drive system capable of delivering up to 130 MW of auxiliary he ...

2025

Effect of Ion Irradiation on the Surface Electrical Conductivity of Cucrzr at High Frequencies

René Chavan, Timothy Goodman, Jean-Philippe Hogge, Jérémy Genoud, Avelino Mas Sanchez, Anastasia Xydou

The ohmic losses in the Electron Cyclotron Heating system of the DEMO nuclear fusion reactor depend on the surface electrical conductivity of the material at the frequency of the mm-wave beams generated in the gyrotrons. To reduce the ohmic losses, many co ...

ELSEVIER SCIENCE SA2025

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

René Chavan, Jean-Philippe Hogge, Avelino Mas Sanchez, Anastasia Xydou

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

Pre-conceptual design of the fixed mirrors for the DEMO Electron Cyclotron Heating antenna

René Chavan, Timothy Goodman, Jean-Philippe Hogge, Avelino Mas Sanchez, Anastasia Xydou, Humberto Torreblanca Quiroz

The M1 mirrors are part of the in -vessel quasi -optical Electron Cyclotron beam propagation system of the DEMO nuclear fusion reactor. These four mirrors are all non -movable and with a plane reflecting surface. Based on their functionality they are divid ...

Elsevier Science Sa2024

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

René Chavan, Timothy Goodman, Jean-Philippe Hogge, Avelino Mas Sanchez, Anastasia Xydou

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

Fluid-dynamic and thermo-mechanical analyses of the ITER electron cyclotron Miter bend mirror for the off-centered beam scenario

René Chavan, Timothy Goodman, Avelino Mas Sanchez, Anastasia Xydou, Humberto Torreblanca Quiroz

2023

High power mm-wave loss measurements of ITER ex-vessel waveguide components at the FALCON test facility at the Swiss Plasma Center

René Chavan, Timothy Goodman, Avelino Mas Sanchez, Anastasia Xydou, Humberto Torreblanca Quiroz

Many future fusion devices will rely heavily, if not solely, on electron cyclotron (EC) heating subsystems to provide bulk heating, instability control (neoclassical tearing mode (NTM) stabilization), and thermal instability control. Efficient use of the i ...

E D P SCIENCES2023

Design and Thermal-Structural Analyses of Ancillary Components for the Optical Steering Mirror (M4) for the ITER ECH Upper Launcher

René Chavan, Timothy Goodman, Avelino Mas Sanchez, Matteo Vagnoni

Each of the four ITER Electron Cyclotron Heating Upper Launcher (ECHUL) features eight transmission lines (TLs) that are used to inject 170-GHz microwave power into the plasma at a level of up to 1.31 MW (at the TL diamond window) per line. The millimeter ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

Electromagnetic and mechanical analyses of the ITER electron cyclotron Upper launcher steering M4 mirrors for the vertical displacement event

René Chavan, Timothy Goodman, Avelino Mas Sanchez, Matteo Vagnoni

The mm-wave power exiting the eight In-Vessel waveguides inside the ITER Electron Cyclotron Upper Launcher is reflected by three fixed mirror sets and finally aimed by two independent steering mirrors to specific plasma locations. A design solution for bot ...

2020

Design Concept and Thermal & x2013;Mechanical Analysis of the Optical Mirror (M3) for the ITER ECH Upper Launcher

René Chavan, Timothy Goodman, Avelino Mas Sanchez

The mirror M3 is a part of the in-vessel quasi-optical beam propagation system for the ITER electron cyclotron heating upper launcher (ECHUL). The millimeter waves are guided through fixed mirror sets (M1, M2, and M3) and the front steering mirror set (M4) ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

Design and Numerical Analyses of the M4 Steering Mirrors for the ITER Electron Cyclotron Heating Upper Launcher

René Chavan, Timothy Goodman, Avelino Mas Sanchez, Matteo Vagnoni

Four electron cyclotron heating upper launchers (ECHULs) will be used at ITER to counteract magnetohydrodynamic plasma instabilities by targeting them with up to 24 MW of mm-wave power at 170 GHz. This mm-wave power is injected through eight ex-vessel (EV) ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

Seismic analyses of the Double Closure Plate Sub-Plate for the ITER Electron Cyclotron Upper Launcher during the Vacuum Vessel baking scenario

René Chavan, Timothy Goodman, Avelino Mas Sanchez, Matteo Vagnoni

The Double Closure Plate Sub-Plate (DCPSP) was introduced in the Electron Cyclotron Upper Launcher (EC UL) design in order to minimize the openings exposing the interior of the Port Plug (PP) to the port cell; avoiding thus the near environment activation ...

2019

Thermo-mechanical analysis of an ITER ECH&CD Upper Launcher mirror

René Chavan, Timothy Goodman, Avelino Mas Sanchez, Matteo Vagnoni

The Mirror one Lower (LM1) is part of the in-vessel quasi-optical beam propagation system for the ITER Electro Cyclotron (EC) Upper Launcher (UL), where eight beams are reflected through four mirrors during its passage to the plasma. The mirrors are groupe ...

2018

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

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

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

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

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

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

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

2017

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

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

2017