Cross-machine NTM physics studies and implications for ITER
Control or avoidance of Neoclassical Tearing Modes (NTMs) will be necessary for good performance in ITER. Recent joint ITPA/IEA and other experiments on JET, DIII-D and ASDEX Upgrade are reported providing new insights into the transport effects, seeding, underlying physics, and threshold scaling of NTMs. Studies highlight the keyrole of sawteeth in triggering NTMs, with advances made in prediction and control in ITER-relevant high fast particle content plasmas. A range of trigger mechanisms are found in ELMy H-mode and hybrid scenarios, with 3 types of NTM impacting performance. Underlying physics scales towards increased NTM sensitivity in ITER, suggesting further measurement and development of control strategies are important.
Bibliographic Reference: An oral paper given at: 20th IAEA Fusion Energy Conference Organised by: International Atomic Energy Agency Held at: Centrtro de Fusao Nuclear, Vilamoura (PT)
Availability: Available from Association EURATOM-CEA, Departement de Recherches sur la Fusion Controlee, CEA Cadarache, F-13108 St Paul-Lez-Durance, France Tel: (+33) 4 42 25 70 01; Fax: (+33) 4 42 25 64 21 E-mail: firstname.lastname@example.org
Record Number: 200417812 / Last updated on: 2004-12-01
Original language: en
Available languages: en