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Plasma Physics and Engineering Lab
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Bringing the power of the sun to Earth by solving ultra-hot plasma through computation.
AboutAbout the lab
A sun on Earth, through plasma theory.
The Plasma Physics and Engineering Lab works to elucidate physical phenomena in plasmas and to develop methods for controlling them, with the aim of realizing fusion reactors.
To realize a fusion reactor, ultra-hot plasma must be kept confined until fusion reactions occur.
Toward magnetically confined fusion reactors, the lab analyzes transport phenomena, instabilities, and control by waves in plasmas, mainly through theory and simulation.
Key terms
- plasma
- A state in which a gas has become extremely hot and its atoms have split into electrons and ions that fly about
- transport barrier
- A layer in plasma where heat and particles have difficulty escaping outward, which improves confinement performance
- data assimilation
- A method of incorporating actual observation data into a simulation to bring the calculation closer to reality
ResearchResearch themes
Aiming to realize magnetically confined fusion reactors, the lab analyzes transport phenomena and instabilities in fusion plasmas, as well as control by plasma waves, mainly through theory and simulation.
*Illustrative imageFlows of heat and particles in plasma
Confinement performance is determined by turbulent transport. The lab develops turbulent transport models that explain how transport barriers with steep pressure changes form, and analyzes them quantitatively with transport simulations.
*Illustrative imageControlling plasma with electromagnetic waves
Various electromagnetic waves are used for plasma generation, heating, current drive, and diagnostics. The lab analyzes wave excitation, propagation, and absorption and the resulting changes in the plasma, and develops effective control methods.
*Illustrative imageInstabilities that disrupt confinement
Confined plasma can collapse when fluctuations suddenly grow. The lab elucidates the mechanisms of instabilities, such as those driven by the fast alpha particles produced in fusion, and studies ways to suppress them.
*Illustrative imageLinking computation and experiment with data
Using data assimilation, which connects simulations with the behavior of real plasmas, and data-driven methods, the lab develops methods for analyzing and controlling fusion plasmas.
MembersFaculty
The members of the Plasma Physics and Engineering Lab consist of faculty, doctoral students, master's students, and fourth-year undergraduate students.
- ProfessorSadayoshi Murakami
- Assistant ProfessorYuya Morishita
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Tokamak schematic Smith” Smith Chris Llewellyn and Cowley Steve / CC BY 3.0 (cropped)
- Flows of heat and particles in plasma: “Cross-section of the Wendelstein 7-X plasma vessel” Siarhei Besarab / CC BY-SA 4.0 (cropped)
- Controlling plasma with electromagnetic waves: “High-voltage cage for the gyrotron heating system of Wendelstein 7-X” Siarhei Besarab / CC BY-SA 4.0 (cropped)
- Instabilities that disrupt confinement: “Kelvin-Helmoltz instability in a pure antiproton plasma” Rcaravit / CC BY 4.0 (cropped)
- Linking computation and experiment with data: “Wendelstein fusion reactor coil” Tiia Monto / CC BY-SA 3.0 (cropped)
- Related lab (プラズマ・核融合基礎学): “The Sun by the Atmospheric Imaging Assembly of NASA's Solar Dynamics Observatory - 20100819” NASA/SDO (AIA) / Public domain (cropped)
- Related lab (エネルギー変換工学): “Casing of a main circulation pump from the Greifswald Nuclear Power Plant” Siarhei Besarab / CC BY-SA 4.0 (cropped)
- Related lab (粒子線材料工学): “Later stage of the CLARA Accelerator, Daresbury Laboratory” Mystery Ray / CC0 (cropped)
- Related lab (環境熱流体工学): “Kelvin-Helmholtz waves” Astronautilus / CC BY 2.0 (cropped)
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