The Institute at a Glance

We are focusing on:

  • Fundamental research
    • electron beam physics and beam target interactions
    • fretting (wear resistance of materials) 
    • generation, transmission and conversion of high electromagnetic fields at millimeter wave frequencies
    • plasma-wall interaction
  • Application of the results
    • to generate pulsed electron beams with large diameters and sufficient beam energies
    • to improve the wear resistance and the liquid metal corrosion of steels
    • to electroporate biomasses and to stimulate biological cells
    • to supply Megawatt power levels for electron-cyclotron resonance heating and control
    • to apply high-power microwaves to materials by developing large-scale microwave ovens and specific microwave tools
    • to predict the impact of transients on the erosion and lifetime of wall materials of future fusion reactors


Promotion Alexander Haas

Am 25.07.2023 hat Herr Dipl.-Ing. Alexander Haas seine Promotionsprüfung zum Thema "Charakterisierung von Gebäudestrukturen mit Mikrowellenmessverfahren" bestanden. Die Arbeit wurde am "DLR - Deutsches Zentrum für Luft- und Raumfahrt" erstellt. Das Institut für Hochleistungsimpuls- und Mikrowellentechnik gratuliert ganz herzlich zur bestandenen Prüfung. 

Promotion Tobias Ruess

Am 30.05.2023 hat Herr MSc. Tobias Ruess seine Promotionsprüfung zum Thema "A First 2 MW-Class (136)/170/204 GHz Multi-Frequency Gyrotron Pre-Prototype for DEMO: Design, Construction and Key Components Verification" bestanden. Die Doktorarbeit wurde in der Arbeitsgruppe "Gyrotron- Test und Messtechnik" am IHM angefertigt. Das Institut für Hochleistungsimpuls- und Mikrowellentechnik gratuliert ganz herzlich zur bestandenen Prüfung. 

Ceremonial Award of Honorary Doctorate on Prof. Manfred Thumm

On January 24, 2022, the Scientific Council of V.N. Karazin Kharkiv National University, in Kharkiv, Ukraine, decided to appoint Prof. Dr. Dr. h.c. Manfred Thumm of the Institute for High Power Pulse and Microwave Technology (IHM) of the Karlsruhe Institute of Technology (KIT), with an honorary doctorate of this university, due to the many years of successful cooperation in the fields of plasma physics and microwave tube technology. Due to the war in Ukraine, the certificate was presented on March 9, 2023, in a ceremony in the Senate Hall of KIT by the Dean of the School of Physics and Technology Prof. Igor Girka, on behalf of the Rector Prof. Tetyana Kaganovska of Kharkiv University. The ceremony was opened by the Vice President for Transfer and International Affairs of KIT Prof. Thomas Hirth and musically accompanied by the German-Ukrainian Choir Karlsruhe.

Promotion Alexander Marek

On  July 19, 2022, Mr. MSc. Alexander Marek passed his PhD examination on the topic "New Type of sub-THz Oscillator and Amplifier Systems Based on Helical-Type Gyro-TWTs". The PhD thesis was prepared in the working group "Gyrotron Simulation & Components" at the IHM. The Institute for High Power Pulsed and Microwave Technology (IHM) congratulates very much to the passed examination.

DamarisDamaris Krust
Energie-Campus 2021

18.11.2021, Ms. MSc. Damaris Krust won 2nd place with her thesis "Microalgae on the electric chair" at the Energy Campus 2021. The Energy Campus 2021, which has taken place annually since 2011, once again united many young scientists* from various disciplines who presented their ideas for the future to a jury of experts under the motto "Energy and the environment - my idea for tomorrow". 


Gyrotrons are powerful microwave generator and essential component in fusion reactor research facilities. Their purpose is to provide a focused microwave beam typically in the range of 140–170 GHz and a power output of 1–2 MW. Electron cyclotron resonance heating is the main concept for plasma heating in toroidal fusion reactors based on the magnetic confinement principle. For gyrotron testing, a specially designed RF load is needed to absorb the intense microwave radiation without taking damage. Large copper tubes with an internal absorber coating are used for this purpose. The water-cooled unit is capable of absorbing 1–2 MW radiation and converting it to heat. The absorber coating consists of a plasma-sprayed mixed oxide that is applied to the inner surface of the tube.

WildeF. Wilde
Promotion F. Wilde

On June 22, 2021, Mr. MSc. Fabian Wilde passed his PhD examination on the topic "Automated Mode Recovery and Electronic Stability Control for Wendelstein 7-X Gyrotrons". The PhD thesis was prepared in collaboration with the Max Planck Institute Greifswald and the IHM. The Institute for High Power Pulsed and Microwave Technology (IHM) congratulates very much to the passed examination.

3-D Mikrowellendrucker SERPENS

Dr. Nanya Li vom Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM) des KIT arbeitet mit seinem Team an dem neuen Druckverfahren. Mit der Technologie SERPENS gewann er 2020 den ersten Preis des NEULAND Innovationswettbewerbs.

CORAERO - The Helmholtz Corona Virus Aerosol Project

Within the framework of the call for proposals "The Corona Pandemic: Recognition, Management, Prevention", the project application CORAERO "Airborne Transmission of SARS Coronavirus - From Fundamental Science to Efficient Air Cleaning Systems" has been awarded in the last selection round on March 22 and 23.

according to which the HGF intends to fund up to 3 collaborative projects from the Initiative and Networking Fund with a funding amount of up to 6 Million Euros over a period of up to 5 years, the CORAERO project.

The CORAERO project, which is now funded by the IVF with 6 Million Euros over a period of 4.5 years, unites 7 Helmholtz centers and 3 universities and covers with its 20 Pis a broad field of competences.

The CORAERO project aims to make comprehensive interdisciplinary contributions to better understand, on the one hand, the spread of respiratory viruses, which spread mainly by aerosols but also by droplets and fomites, and, on the other hand, to develop technical and administrative measures for mitigation and virus control.

The project is coordinated by Claudia Traidl-Hoffmann HMGU and Uwe Hampel HZDR.

From KIT, Thomas Leisner IMK-AAF, Horst Hahn INT, Julia Hahn ITAS and Guido Link IHM are involved in the project.


„Mikrowellen zerlegen Treibhausgas“ - KIT WissenschaftlerInnen setzen auf Plasmatechnologie zur effizienten Erzeugung von synthetischen Kraftstoffen aus CO2 - Campus-Report am 09.03.2021

Bis 2050 müssen wir unseren CO2 Ausstoß auf Null herunterfahren. Eine gewaltige Anstrengung. Aber selbst sie wird nicht ausreichen, wenn wir die Klimakatstrophe verhindern wollen. Zusätzlich müssen Milliarden Tonnen des bereits in der Atmosphäre befindlichen Klimagases wieder herausgefiltert werden. Das kann man durch das Anpflanzen neuer Wälder machen. Die dafür notwendigen riesigen Flächen fehlen dann aber für den Anbau von Nahrungsmitteln. WissenschaftlerInnen arbeiten deshalb fieberhaft an Filtertechnologien, um das CO2 direkt aus der Luft abzuscheiden und in seine Bestandteile zu zerlegen. Am Karlsruher Institut für Technologie wird mit dem Einsatz von pulsierenden Mikrowellen experimentiert, um das CO2 mithilfe von Sonnen- oder Windenergie in klimaneutrale Kraftstoffe zu verwandeln.

Hier geht's zum Interview

Veröffentlichung in der Fachzeitschrift ACS, Energy Letter, Vol. 6, No 1,

RamopoulosV. Ramopoulos
Promotion Vasileios Ramopoulos

Am 21.01.2021 hat Herr Vasileios Ramopoulos seine Promotionsprüfung mit dem Thema "Energy-efficient, scalable and modular industrial microwave applicator for high temperature alkaline hydrolysis of PET" bestanden. Herr Ramopoulos hat seine Doktorarbeit in der Gruppe der industriellen Materialprozesstechnik (IHM) geschrieben. Das Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM) gratuliert ganz herzlich zur bestandenen Prüfung.