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Meetings

  • 41st MHD, Disruptions and Control TG Meeting
    28 Mar - 31 Mar, 2023
    IO, St Paul Lez Durance, France
  • 41st Pedestal & Edge Physics TG Meeting
    24 Apr - 28 Apr, 2023
    Daejeon, Korea
  • 30th Transport & Confinement TG Meeting
    25 Apr - 28 Apr, 2023
    Madison, WI, US
  • 43rd Diagnostics TG Meeting
    22 May - 25 May, 2023
    Eindhoven, Netherlands
  • 33rd Scrape-Off-Layer & Divertor TG Meeting
    06 Jun - 09 Jun, 2023
    Oak Ridge, TN, US
Scope

The general scope of the ITPA Topical Group on MHD, Disruptions and Control is to provide the experimental and theoretical basis and recommendations for both conventional and advanced tokamak scenarios on next step burning fusion devices in the areas of: β limiting MHD instabilities and their active control; disruptions (physics, prediction, avoidance and mitigation), and the connected halo currents, forces and heat loads; and plasma magnetic control (current, position, shape, error fields). In these areas the group shall co-ordinate collaborative research activities among international fusion research establishments, including experiments to be conducted, analysis of results, modelling and comparison with theory. The group shall also direct the application of the present understanding to modelling and assessment of ITER plasmas. Predictions for burning plasma experiments require the construction, extension and analysis of a disruption database, and contributions to other databases. In addition, research priorities for Physics R&D in support of burning plasma experiments have to be identified and formulated and to be endorsed by the ITPA Coordinating Committee. Based on these activities, the TG shall recommend physics guidelines and methodologies for physics and technical design of burning plasma experiments. Publications and presentations on the activities of the TG to fusion journals and international conferences will be promoted.

Tasks

The tasks of the MHD, Disruptions and Control Topical Group, on the basis of operimental and theoretical studies, shall address three main topics:

  • MHD instabilities and their control:
    • Limits imposed on plasma parameters, especially β, by MHD instabilities in both conventional and advanced tokamak operation, e.g. neoclassical tearing modes (NTMs), external kinks, and resistive wall modes (RWMs)
    • Active control of MHD instabilities via pressure and current profile control
    • Active control of MHD instabilities via conducting structures and additional coils
    • Interaction of MHD modes with plasma rotation, error fields and TF ripple
    • Diagnostic issues related to measurement and control of MHD instabilities
  • Disruptions and their mitigation:
    • Disruption characterisation (e.g. thermal and current quench times, halo currents, production and quenching of runaway electrons) and its projection to future machines
    • Validation of theoretical models used in disruption studies, namely disruption prediction, avoidance and mitigation
    • Extension of the existing disruption database, especially towards q ≈ 3 discharges, quench time scales and halo current asymmetries
    • Tools and recommendations for disruption prediction, avoidance, and mitigation — both for heat loads and forces to achieve reliable machine protection
    • Assessment of disruption mitigation by techniques including pellets and strong gas puffs
    • Avoidance and mitigation of runaway electron production during current decay
    • Scenarios of emergency plasma termination (fast shut-down)
    • Diagnostic issues related to prediction, avoidance, and mitigation of disruptions
  • Plasma magnetic control:
    • Recommendations on the reactor relevant conventional and advanced tokamak scenarios
    • Plasma scenario and machine sequencing requirements to obtain the plasma target parameters and to avoid disruption
    • Feedback and feedforward control of plasma current, position and shape by axi-symmetric poloidal fields
    • Control and reduction of error fields
    • Experimental validation of theoretical models used for magnetic control simulations
    • Diagnostic issues related to magnetic control
    • Development, tests and recommendations on magnetic control used in Plasma Control Simulators. (Taking into account the high cost of ITER equipment and the cost of running a tokamak discharge, all experiments should be at first simulated and properly optimised with user friendly numerical codes referred to as Plasma Control Simulators. Activity on the PCS includes development of codes, their validation in experiments, improvements in the codes and simulation of ITER discharges with feedforward and feedback plasma control.)
  • Runaway electrons:
    • Study of the generation of runaway electrons by disruptions in present devices and comparison with theory
    • Development of  mitigation/control tools for ITER

China

Ding Yonghua
Liu Yi
Sun Youwen
Wang Xiaogang
Zhu Ping

EU

Bolzonella Tommaso
Igochine Valentin
Piron Lidia
Ratta Giuseppe
Reux Cédric
Sheikh Umar
Sozzi Carlo

India

Bandyopadhyay Indranil (Dep. Chair)
Chandra Debasis
Sen Abhijit

Japan

Furukawa Masaru
Inoue Shizuo
Isayama Akihiko (Chair)
Masamune Sadao
Matsuyama Akinobu
Sakakibara Satoru
Watanabe Kiyomasa

Korea

Bak Jun-Gyo
Jeon Young-Mu
Kim Jay Hyun
Kwon Oh-Jin
Lee Sang-Gon
Park Gunyoung

Russia

Ivanov Nikolay
Lukash Victor
Medvedev Sergei
Mirnov Sergey
Pustovitov Vladimir

USA

Chapman Brett
Eidietis Nick
Granetz Bob (Contact)
Harris Jeffrey (Stell. Rep)
Jardin Steve
Logan Nikolas
Park Jong-Kyu
Sabbagh Steven

ITER

Lehnen Michael (ITER Dep. Chair)
  • Artaud Jean-François (EU)
  • Beidler Matthew (US)
  • Benkadda Sadruddin (EU)
  • Cui Zhengyin (CN)
  • Gao Zhe (CN)
  • Garofalo Andrea (US)
  • Hoppe Mathias (EU)
  • Hu Liqun (CN)
  • Jachmich Stefan (EU)
  • Lee Sang-Jun (KO)
  • Levesque Jeffrey (US)
  • Maraschek Marc (EU)
  • Markovic Tomas (EU)
  • Navratil Gerald (US)
  • Paccagnella Roberto (EU)
  • Pautasso Gabriella (EU)
  • Pavel Aleynikov (EU)
  • Paz-Soldan Carlos (US)
  • Rea Cristina (US)
  • Ryu Chang-Mo (KO)
  • Sweeney Ryan (US)
  • Waelbroeck Francois (US)
  • Zohm Hartmut (EU)
  • Bardoczi Laszlo (US)
  • Buttery Richard (US)
  • Cavinato Mario (EU)
  • Dumont Remi (EU)
  • Fasoli Ambrogio (EU)
  • Gribov Yuri (IO)
  • Hu Xi Wei (CN)
  • Joffrin Emmanuel (EU)
  • Kolemen Egemen (US)
  • La Haye Rob (US)
  • Liu Yueqiang (EU)
  • Maget Patrick (EU)
  • Martin Piero (EU)
  • Okabayashi Michio (US)
  • Peterka Matej (EU)
  • Polevoi Alexei (IO)
  • Sauter Olivier (EU)
  • Strauss Hank (US)
  • Wang Zhengxiong (CN)
  • Wang Hui-Hui (CN)
  • You Kwang-Il (KO)
  • Zhang Yang (CN)
  • Bandaru Vinodh Kumar (EU)
  • Baruzzo Matteo (EU)
  • Berkery Jack (US)
  • Chapman Ian (EU)
  • Gao Qindi (CN)
  • Guenter Sibylle (EU)
  • Guo Bihao (CN)
  • Hoelzl Matthias (EU)
  • Hollmann Eric (US)
  • Humphreys David (US)
  • Kim Woong Chae (KO)
  • Kim Gnan (KO)
  • Matsunaga Go (JA)
  • Nardon Eric (EU)
  • Pan Yuan (CN)
  • Pau Alessandro (EU)
  • Peysson Yves (EU)
  • Ramos Jesus (US)
  • Strait Edward (US)
  • Yun Gunsu (KO)
  • Zakharov Leonid (US)
  • Zhu Ping (US)
  • Artora Javier (IO)
  • Baylor Larry (US)
  • Chen Zhongyong (CN)
  • Daniel Raju (IN)
  • Ganesh Rajaraman (IN)
  • Gerasimov Sergei (EU)
  • Hender Tim (EU)
  • Hu Di (IO)
  • Izzo Valerie (US)
  • Konovalov Sergey (RF)
  • Mcintosh Simon (IO)
  • Menard Jonathon (US)
  • Munaretto Stefano (US)
  • Pan Yudong (CN)
  • Portone Alfredo (EU)
  • Saint-Laurent François (EU)
  • Schwarz Nina (EU)
  • Shiraishi Junya (JA)
  • Villone Fabio (EU)
  • Volpe Francesco (US)
  • Yanovskiy Vadim (EU)
  • Zhong Fangchuan (CN)