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Fusion Simulation Lab
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A lab that uses computer simulations to explore how turbulence works in fusion plasmas.
AboutAbout the lab
Exploring how plasma turbulence works through e-science.
The Kasuya Lab, part of the Fusion Simulation Lab, studies plasma physics through computer simulation.
Its specialty is simulation of fusion plasmas, but its targets are broad, including space plasmas, and the lab aims to pioneer new research methods spanning science and engineering.
The lab welcomes students who are interested in plasmas or who want to deepen their understanding of nature through simulation, and invites them to visit the lab.
Key terms
- Toroidal plasma
- A plasma confined by a doughnut-shaped magnetic field. It is studied in fusion research
- Turbulence
- A state in which flow is disordered and large and small eddies are mixed together. It also occurs in plasmas
- Zonal flows and streamers
- Structures that form within turbulence. A zonal flow is a flow that runs in a band, and a streamer is an eddy localized in the circumferential direction of a cylinder
ResearchResearch themes
The Kasuya Lab studies plasma turbulence with computer simulations, focusing mainly on fusion plasmas. Using toroidal and linear plasmas, it investigates how structures form from turbulence and the mechanisms of turbulence-driven acceleration and response time delay.
*Illustrative imageResponse Simulation of Toroidal Plasmas
The lab studies the nonlinear behavior of toroidal plasmas caused by turbulence. By simulating how pressure changes in the core propagate, and by using statistical analysis methods, it clarified the mechanism of turbulence-driven acceleration and response time delay.
*Illustrative imageDevelopment of a Plasma Turbulence Measurement Simulator
The lab explores how the “structures” formed by turbulence in magnetically confined fusion plasmas come about. It is developing a “turbulence measurement simulator,” which combines a simulation of plasma turbulence with a module that “measures” the resulting turbulent field.
*Illustrative imageBifurcation of Turbulent Structures in Linear Plasmas
Under the simple magnetic field geometry of a cylindrical linear device, the lab investigates the fundamental processes by which turbulent structures form. It developed the Numerical Linear Device to simulate resistive drift-wave turbulence, and showed how zonal flows and streamers are selectively formed.
MembersFaculty
The Kasuya Lab's members consist of faculty members and doctoral and master's students.
- ProfessorNaohiro Kasuya
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: “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
- Response Simulation of Toroidal Plasmas: “HBT-EP shells and sensors” Sarah M Angelini, Jeffrey P Levesque, Michael E Mauel and Gerald A Navratil / CC BY 3.0 (cropped)
- Development of a Plasma Turbulence Measurement Simulator: “Magnetic turbulence” Giannandrea Inchingolo / CC BY-SA 4.0 (cropped)
- Bifurcation of Turbulent Structures in Linear Plasmas: “Plasma-lamp” Luc Viatour / CC BY-SA 3.0 (cropped)
- Related lab (Theoretical Plasma Physics Lab): “Pilot Plasma Engine - GPN” NASA / Public domain (cropped)
- Related lab (Beam Plasma Diagnostics Lab): “A segment of the Wendelstein 7-X vacuum vessel” Siarhei Besarab / CC BY-SA 4.0 (cropped)
- Related lab (Plasma Information Control Lab): “Electric glow discharge schematic-fr” Electric_glow_discharge_schematic.png: http://en.wikipedia.org/wiki/User:Iantresman derivative work: Grimlock (talk) / CC BY 2.5 (cropped)
- Related lab (Non-equilibrium Plasma Dynamics Lab): “Diagnostic monitors in the control room of Wendelstein 7-X” Siarhei Besarab / CC BY-SA 4.0 (cropped)
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