Call for Participation – Autumn Course on Gyrotron Physics and Technology
This course is designed for engineers and scientists actively involved in the operation of fusion-relevant Electron Cyclotron Resonance Heating (ECRH) systems. Its primary objective is to provide participants with a foundational understanding of ECRH systems, spanning from the plug to the plasma. Its content includes the physics and technology of gyrotrons, as well as the intricate wave propagation from the gyrotron to the plasma.
The course's content is structured to equip attendees with the fundamental knowledge required to grasp the global operational limits of an ECRH system. This comprehension extends to evaluating the limitations of each individual subcomponent within this complex system.
This course takes a unique approach; instead of a traditional lecture-based format, the material is derived from a combination of handwritten notes, supplemented by excerpts from presentations, articles, and notes collected over the years. This methodology provides a comprehensive and practical perspective on the subject matter. Additionally, we encourage open discussions tailored to the interests of the audience, allowing for in-depth exploration of specific topics as per participants’ preferences.
Part 1: Induction Week at EPFL
🗓 Date: 3-6 November 2026
📍 Location: Swiss Plasma Center, EPFL SB SPC, Station 13, CH-1015 Lausanne
The in-person sessions will feature a mix of theoretical discussions and exclusive lab visits.
List of theoretical discussions:
- Gyrotron Physics Basis
- Magnetic field alignment
- Gyrotron Physics: Modeling Basis
- Gyrotron Control Parameters
- Gyrotron Beam Duct
- Gyrotron Electron Gun
- Gyrotron Collector
List of lab visits:
- A tour of the TCV tokamak and its ECRH systems.
- A visit to the Falcon facility, a high-power test stands used to test gyrotrons and ECRH components.
- A tour of the Low Power Milimeter Wave lab, including the Trapped Electron Experiment (T-REX)
Part 2: Weekly online training sessions
List of theoretical discussions:
- From Cavity to Window: Launcher Internal Optics
- Gyrotron Window: Gaussian Beam Technology
- Generalities on the beam wave propagation, basics on polarizers
- Free Space Propagation, Scalar Theory, Beam diagnostics
- Gaussian Beam Transformation and Mirror Losses
- Transmission Line Propagation, TEM00 to HE11 coupling
- Power supplies*
- ECRH and ECCD*
* to be confirmed
We also encourage a highly interactive learning environment. Participants are encouraged to bring questions and interests to the table, enabling in-depth exploration of specific topics most relevant to them.
