H-Mode Workshop 2026

The 20th International Workshop on H-mode Physics and Transport Barriers

September 8 - 11, 2026
Hoam Faculty House, Seoul, South Korea
Abstract submission Registration Room Reservation

About the Workshop

The 20th International Workshop on H-mode Physics and Transport Barriers will be held from September 8–11, 2026. The purpose of this biennial workshop is to present and discuss the status of H-mode and internal transport barrier experiments, theory and modeling in magnetic fusion research and to discuss scientific solutions of H-mode control for the purpose of exploring possibilities of advanced operating scenarios in next step fusion devices.

Hosted By
  • Seoul National University (SNU)
  • Korea Institute of Fusion Energy (KFE)

Meeting Format

The workshop will be organized around six broad topics of current interest. An overview talk, accompanied by discussion, will be presented for each topic. Each talk will be followed by a poster session of contributed papers related to the topic.

The International Advisory Committee solicits contributed papers that present and discuss recent experimental, theoretical or modeling studies of transport barriers, both internal and edge, as observed in numerous magnetic confinement machines and in a variety of magnetic topologies. All talks and posters will be presented in-person only.

Workshop Outline

Host Organizations

  • SNU Nuclear Research Institute for Future Technology and Policy
  • SNU Energy Initiative
  • SNU BK21 Division of Integrated Graduate Education for Next-Generation Energy Korea
  • Korea Institute of Fusion Energy (KFE)

Venue Information

Hoam Faculty House (SNU)

Building 125, 1 Gwanak-ro, Gwanak-gu, Seoul 08826

Hoam Faculty House

Contact Us

Yong-Su Na Chair, Local Organizing Committee
ysna@snu.ac.kr, +82-(0)10-5184-6009
Hyunjin Lee Workshop Secretary
an.lee@snu.ac.kr, +82-(0)2-880-8897

Topics and speakers selected by the International Advisory Committee

T. Wilks
Topic 1
H-mode Pedestal Optimization and Compatibility with Radiative Edge and Dissipative Divertor Regimes T. Wilks (MIT PSFC)
M. Faitsch
Topic 2
Role of Separatrix Density and SOL Turbulence in H-mode Access and Pedestal/Confinement Physics M. Faitsch (IPP)
S. Saarelma
Topic 3
Predictive Understanding of H-mode Pedestals: Density Evolution, Inter-ELM Transport, and Small-ELM Regimes S. Saarelma (UKAEA)
A. O. Nelson
Topic 4
Separatrix Shape Dependence of the H-mode Power Threshold, Confinement Quality, and ELM Type A. O. Nelson (Columbia Univ.)
Y. Suzuki
Topic 5
The Importance of 3D Fields: From ELM Control to Core-Edge Integration in High-Performance Plasmas Y. Suzuki (Hiroshima Univ.)
H. Han
Topic 6
Effect of Fast Ions on Core Confinement Enhancement H. Han (KFE)

Important Dates

April 13, 2026 Abstract submission opens
May 22, 2026
Abstract submission deadline
May 29, 2026 Notification of abstract acceptance
June 5, 2026 Participants’ request for visa support letters by
July 17, 2026 Early bird registration deadline
August 7, 2026 Final registration deadline
September 8, 2026 Meeting begins

Organizing Committee

Local Organizers

Yong-Su Na Yong-Su Na Seoul National Univ.
Jong-Kyu Park Jong-Kyu Park Seoul National Univ.
Yongun Nam Yongun Nam Korea Institute of Fusion Energy
Youngmu Jeon Youngmu Jeon Korea Institute of Fusion Energy

International Advisory Committee

  • Leonid Askinazi (Russia)
  • Mike Dunne (EU)
  • Xiang Gao (China)
  • Jerry Hughes (US)
  • Costanza Maggi (UK)
  • Yong-Su Na (South Korea)
  • Joseph Snipes (US)
  • Gary Staebler (US)
  • Tokihiko Tokuzawa (Japan)
  • Hajime Urano (Japan)

Abstract Submission

Online Submission

Please upload one page PDF abstract (minimum 11 point font) to this link:

Go to Submission Portal

Alternatively, you may send it to snuplare@gmail.com,
with “[HMWS2026]” included in the subject line.

Authors may choose a suggested sorting topic from the list shown above. If you send the abstract via email, you may include in the mail whether you intend to submit your contribution to Nuclear Fusion journal, and/or whether you need an invitation letter for your visa application.

TEMPLATE Information:
Abstract should contain the title, authors, affiliations and the main summary of the presentation. No additional template information specified for abstract.

Registration

Registration
Room Reservation

Registration Fees

Type Early registration
(July 17, 2026)		 Late registration
(Aug 7, 2026)
Regular 350 USD 400 USD
Accompanying Person 180 USD 200 USD
Regular registration includes:
  • Admission to talks and poster sessions
  • Welcome reception and coffee breaks
  • Social dinner on Wednesday evening
  • Excursion on Friday
Accompanying Person
  • Registration for accompanying person does not include admission to talks and poster sessions, but includes reception, coffee breaks, social dinner and an excursion, just like regular registration.