Heating & Current Drive Topical Group Preparation of the 2008-2009 Work Programme

1. Heating & Current Drive Topical Group Preparation of the 2008-2009 Work Programme A. Bécoulet; T. Goodman; T. Hellsten; T. Jones; R. Koch; ML Mayoral; J. Ongena; ACC Sips; B. Weyssow. http://www.tpg.efda.org/hcd/index.htm

2. The H&CD Topical Group According to its terms of reference (EFDA(08) 36/4.5), the Heating and Current Drive Topical Group is, within the European Fusion Development Agreement, in charge of i. generating a consensus of the EU fusion community in the field of H&CD in support of ITER physics, in preparation for ITER operation (e.g. scenario development) and in view of DEMO; ii. developing an annual EU recommendation of R&D priorities to the EFDA Leader, supporting in the elaboration of a long term programme and of the annual Work Programme; iii. promoting the execution of experiments on the EU devices in support of this programme; iv. proposing R&D on specific aspects of H&CD system performance (eg RF sheath performance, coupling, current drive, conditioning etc); v. identifying when EU expertise needs to be concentrated on the resolution of specific issues; vi. providing advice to the EFDA leader on training; vii. promoting cooperative activities in the area of H&CD among the European Research Institutes, in particular with the participation of new member states and universities; viii. providing advice and expertise on the development, benchmarking and validation of relevant modelling codes in liaison with the EU Integrated Tokamak Modelling TF; ix. maintaining an EU expert knowledge base in the relevant H&CD physics and technology; x. providing advice to EFDA on H&CD matters when required by the EFDA Leadership; xi. providing support to the EFDA Leader in the development of R&D activities for potential ITER H&CD upgrades (eg LHCD) to the point at which such activities can be transferred to F4E; xii. coordinating the Physics and Technology aspects of Long Pulse and Steady State Operation programme under EFDA in close collaboration with the JET Task Force Leaders for Scenario 2 (S2) and Heating (H).

3. Structure of the Topical Group • The Topical Group is composed with all members of the EURATOM Associations interested in Heating and Current Drive issues in magnetic fusion devices. • It is coordinated by a Scientific and Technical Board, consisting in: • - The Topical Group Chairman, nominated by the EFDA Steering Committee • The EFDA H&CD Responsible Officer • A coordinator in charge of the Neutral Beam Injection aspects • A coordinator in charge of the Ion Cyclotron Resonant Heating aspects • A coordinator in charge of the Lower Hybrid Current Drive aspects • A coordinator in charge of the Electron Cyclotron Resonant Heating aspects • A coordinator for the EFDA mission #4 "Long Pulse and Steady State" • The EFDA-JET Task Force H Leader • The EFDA-ITM Task Force IMP5 Project Leader (H&CD Modeling) • (a representative of F4E) • The Topical Group connects to Associations through Contact Persons

4. The S/T Board • - The Topical Group Chairman (Alain Bécoulet) • The EFDA H&CD Responsible Officer (Boris Weyssow) • A coordinator in charge of the Neutral Beam Injection aspects (Tim Jones) • A coordinator in charge of the Ion Cyclotron Resonant Heating aspects (Raymond Koch) • A coordinator in charge of the Lower Hybrid Current Drive aspects (open; Alain Bécoulet, interim) • A coordinator in charge of the Electron Cyclotron Resonant Heating aspects (Tim Goodman) • A coordinator for the EFDA mission #4 "Long Pulse and Steady State“ (George Sips) • The EFDA-JET Task Force H Leader (Marie-Line Mayoral; Jef Ongena interim) • The EFDA-ITM Task Force IMP5 Project Leader (H&CD Modeling) (Torbjörn Hellsten) • (a representative of F4E, tbd) • The S/T Board meets remotely once a month (all details on website) • The TG Chairmen and TFLs meet remotely with EFDA • The Coordinating Committees remain as subgroups of the H&CD TG

5. www.tpg.efda.org/hcd/index.htm

6. Methodology • The present work programme recommends a limited number of actions, motivated by the following concerns: • the milestones following the European Facility Review process, • the urgent requests being formulated by the ITER project and/or the F4E work programme, in direct support to ITER, • the present understanding of the short term needs and evolutions of the existing EU facilities, • the present understanding of the overall EU capability of committing resources to the tasks, though no formal Call for Proposal was issued yet.

7. The Tasks • Mission 1 : Burning Plasmas • - BPD: Experimental simulation of non-linear burning plasma dynamics in the Advanced Scenarios for steady-state operation • Mission 2: Reliability of tokamak operation • - ICWC: ICRF assisted wall conditioning • - RFINIT: Plasma initiation assist with H&CD systems • - RFCP: RF Coupling • - ICAD: Improvement and qualification of ICRH arc detection systems (to be conducted with F4E) • - ECARC: EM compatibility of H&CD systems during arcing (to be conducted with F4E) • - ECPOL: Real-time Polarization Control of EC waves to avoid overheating of machine structures • Mission 4: Long Pulse and Steady-state Operation • - MIX: Investigate the influence of H&CD mix on ITER scenarios • - LPO: Long pulse operation of H&CD systems • - NBIPHY: (off-axis) Current Drive and Rotation capability of NBI • Mission 7: DEMO physics and Plasma Scenarios • - DEMO: H&CD systems for DEMO • Emerging Technologies (under Mission 4) • - LH4IT: EU contribution to the ITER LHCD development plan • LH4AUG: LHCD system for Asdex Upgrade • - NBCS: Cs-free negative ion source operation • - ERID: Electrostatic Residual Ion Dump Studies • - NBIOPT: Space Charge Neutralisation Investigation(to be conducted with F4E) • - NBIEXT: Physics of extraction of negative ions(to be conducted with F4E) • - NBNEUT: Alternative neutraliser technology • ITER specific physics • - H&CD during the commissioning phase of ITER(to be conducted with F4E) • - ITER current rise phase: access to a range of q-profiles(to be conducted with F4E)

8. The Tasks

9. Concluding remarks • The TG is not there to manage all the H&CD activity in Europe (!); but to “generate a consensus” and “provide advise and expertise” to EFDA and F4E. • It is based on the very long term experience of H&CD Coordinated Committees • Cooperation and Communication between EU teams are the keywords • we must keep both a short term and a long term perspective • we are clearly resource limited -> we must generate priorities and respect them. • the tasks will be runned if and only if manned by the Associations • we must keep a programmatic flexibility, and ability to answer urgent calls from EFDA, F4E, ITPA and ITER

10. alain.becoulet@cea.fr