1 / 24

Michael Watkins Head of Programme and International Collaborations EFDA-JET Close Support Unit

JET status for 2008/09: New capabilities, operating schedule and research focus. New on JET for 2008/2009 ITER-like ICRH Antenna, High Frequency Pellet Injector, enhanced diagnostic capability, and a proposal for a longer-term JET programme to end 2014.

hue
Download Presentation

Michael Watkins Head of Programme and International Collaborations EFDA-JET Close Support Unit

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. JET status for 2008/09:New capabilities, operating schedule and research focus New on JET for 2008/2009ITER-like ICRH Antenna,High Frequency Pellet Injector, enhanced diagnostic capability, and a proposal for a longer-term JET programme to end 2014 23rd Meeting of Executive Committee ofIEA Large Tokamak Implementing Agreement GA, San Diego, Ca., USA3-4 June 2008 Michael Watkins Head of Programme and International Collaborations EFDA-JET Close Support Unit michael.watkins@jet.efda.org

  2. JET since LTA ExCom22, Naka, 2007 • Successfully completed 2007 Shutdown, including assembly and installation of enhancements (ITER-like ICRH Antenna, High Frequency Pellet Injector,.) • Successfully completed 2008 Restart of operations, including first tests of ITER-like ICRH Antenna, High Frequency Pellet Injector • Successfully elaborated EFDA-JET 2008 Experimental Campaigns, including preparations for ITPA High Priority Coordinated Experiments (> 30% of JET programme time in 2008) • Completed (almost) Experimental Campaigns C20a&b comprising 38 S/T days (two shift operation) during Spring 2008 (7 April to 6 June 2008) • Conducted R&D, procured components and buildings for enhancements for installation during 2009/10 (ITER-like Wall, NB Power Upgrade,…) • Conducted Fusion Technology Tasks using the JET Facilities

  3. Some successes of 2007/2008 • ELMs ameliorated successfully (radiative edge, external magnetic perturbations) • TF Ripple studies • High bN (~3) obtained for long pulse (7s) • Edge control and stability of AT scenarios • Material migration and fuel retention quantified • Large ELMs (>0.6MJ energy drop) lead to high radiation (>50% of ELM energy drop) and low power (~10%) to outer limiter surfaces • Ion temperature critical gradient length (“threshold”) determined • Analysis of inward momentum pinch • ITER-relevant RF and LH coupling achieved • High current (3.5MA) at high delta achieved • High Level Commissioning of ITER-like ICRH Antenna • High Level Commissioning of High Frequency Pellet Injector • Optimisation of ELM control with Resonant Magnetic Perturbations • Rotation Braking • Start-up and current ramps for ITER

  4. Elaboration of JET 2008Experimental Programme • Headlines for JET 2008 Experimental Programme • High level commissioning and full scientific exploitation of new systems and issues that could impact on the design of ITER components • Qualification of integrated operating scenarios for ITER • Physics issues essential to the efficient exploitation of ITER • Guidelines to focus JET 2008 Scientific Programme • Heat Load and ELM Control • Pedestal and L-H transition • Core confinement • Fuelling and Particle control • Stability and control at high pressure • RF power optimisation General Planning Meeting: 19-23 November 2007 • No specific Call for proposals for experiments, but open channel for new experiments maintained through Task Forces, now and during Campaigns • Ideas for experiments started by being discussed in Task Force meetings • Scientists who might expect to be involved in JET 2008 Campaigns invited to participate in General Planning Meeting This approach found to be more effective for all users of JET Facilitiesto agree on main and back-up experiments in detail

  5. 2008 Campaigns C20-C25: Associates’ involvement • 21 Associations • 337 people • 70 ppy total • 48 working days per person on average • Contracts signed • Individual Task Descriptions • Task Agreements • Secondment Plans • Orders • (Notifications)

  6. International collaborations:Russian Federation and US, 2003-2007 Additionally, two full-time US collaborators Number of professionals visiting JET Total* 38 26 32 40 29 Agreement US LTA US Bilateral RF Bilateral About 4ppy, or 13% of staffing Time spent by visiting professionals at JET (ppd) Agreement 618 582 524 435 US LTA 314 US Bilateral RF Bilateral * US Bilateral and US LTA numbers are not additive, since the same professional may visit under both within a single year

  7. International collaborations:China, Korea and Japan, 2004-2007 Number of professionals visiting JET 7 Country 4 China 4 Korea 3 Japan Time spent by professionals visiting JET (ppd) 139 Country 135 122 China 47 Korea Japan

  8. JET resources Original investment in and subsequent upgrades of the JET Facilities (M€ of year) 163.9 55.98 75.48 44.56 34.70 31.36 28.31 22.15 28.29 23.69 15.06 17.79 14.18 9.87 6.67 3.21 2.53 0.55 0.0 0.0 2.5 4.68 6.90 19.36 13.01 14.59 18.09 42.30 12.01 5.94 0.08 • Average annual values 2000-2006 • Days of operation 63 • Cost 53.8M€* • PPY (Operation) 551 • PPY (Campaign) 53 (on site) + 35 (off site) * Includes personnel for operation and enhancement

  9. New JET capabilities for 2008/09 • New and upgraded systems • ITER-like ICRH antenna: 7MW for >5s at 42MHz with Type I ELMs (US) • ICRH with ECT: ~3MW with Type I ELMs • ICRH with 3dB couplers: ~3MW with Type I ELMs • High Frequency Pellet Injector for ELM control and deep fuelling (US) • TAE antenna (two antenna arrays) (US) • Disruption Mitigation Valve • Diagnostics: Edge LIDAR, ECE, sweeping reflectometer, fast visible camera, divertor infra-red camera, QMBs, magnetics, halo current sensors, g-ray cameras,… • Detector development: radiation hard Hall probe, CVD diamonds, Si on insulator, Cellular Non-linear Network (CMOS), activation foils,… • Systems to be used more routinely • EFCC for Resonant Magnetic Perturbations for ELM control and Resonant Field Amplification for RWM studies • TF Ripple (0.08-3%) • Diagnostics: HRTS (US), Scintillator probe, Faraday cups (US), CXRS (US),…

  10. New capabilities for JET 2008:ITER-like ICRH Antenna installation High Level Commissioningon plasma started(600kW coupled in May 2008) Target capability with Type I ELMs:7MW for 5s at 42MHz together with A2 antennae ≈ 6MW using 3dB Couplers and External Conjugate T 06/09/07...took less than 4 h!

  11. JET Facilities: Fuelling & ELM controlNew for 2008: HFPI High Frequency Pellet Injector for ELM control & deep fuelling Pelin Injector (Tore Supra design) Microwave cavities Main support frame Valves toward roots group Collector LFS, HFS, VHFS tracks High Level Commissioning on plasma about to begin (June 2008) Turbo pumps Selectors Size Velocity Frequency 35-70mm3 100-500m/s < 15Hz 1-2 mm3 50-200m/s < 40Hz Provide deep fuellingControl Type I ELMs

  12. Bolometer (KB5). Commissioning completed in 2005. Wide-angle IR producing data since 2006. Core and edge CXS producing data since 2006. Halo current sensors. Screening of cable proving effective. Tofor and MPRu. Data validation completed early 2008. Lost a Scintillator probes producing data since 2006. Disruption mitigation valve being upgraded for H/D operation. Extreme shape controller (XSC) tested on plasma in 2007. Tritium retention studies. Coated tile recovery and QMB replacement during 2007. Microwave access completed since 2006. Oblique ECE (KK5) being commissioned during campaign. High resolution Thomson scattering (new optical path independent from LIDAR, extended pulse to be tested) TAE antennas (2nd array inserted) Magnetics (poloidal limiter and upper dump coils inserted) Lost a Faraday cups being commissioned. EP1 Enhancement project status EP1 projects to be closed in 2008 Closed EP1 projects

  13. Edge and core LIDAR JET only machine with LIDAR Thomson Scattering Diagnostics Edge LIDAR Core LIDAR Electron Cyclotron Emission High Resolution Thomson Scattering New capabilityHigh Resolution Thomson Scattering

  14. 1 Sep 3 Oct 9.5 15.5 Campaign C23 16.5 6.5 6 Oct 7 Nov 2 Campaign C24 30 10 Nov 19 Dec Campaign C25 JET 2008 Campaigns S/T Days Scientific programme ICRH commissioning From (2008) To (2008) Other 102 days for scientific programme (including 30% contingency) 73 days for ITER-like ICRH Antenna commissioning HLC / Restart contingency 9 25 Mar 4 Apr 7 Apr 2 May 10 10 Campaign C20a 2 1 1 6 May 9 May Maintenance/Contingency 12 May 6 Jun 8.5 9.5 Campaign C20b 14.5 14.5 9 Jun 18 Jul 1 Campaign C21 21 Jul 29 Aug 1 11 16 Campaign C22

  15. JET Fusion Technology CEA SCK-CEN UKAEA MEdC Associations 98 tasks launched 2000-06 Total resources ~ 16.5 M€ (~3.7 M€ in 2006) Distribution of resources over the years IPP FZJ FZK 2000 2006 2001 VR TEKES ENEA 2002 2005 2004 2003 Resources and associations working for JET-FT Work programme Tritium in tokamaks Tritium process and waste management Plasma facing components Engineering Neutronics and safety

  16. JET Forward Programme 2009 & 2010 • Two Experimental Campaigns separated by Intervention(January – June 2009) • ITER-like Wall, NB Power Upgrade and diagnostic enhancements for longer term programme to be installed in 2009 for exploitation in 2010 • Major challenge will be to accommodate up to 45MW of heating power with beryllium wall and tungsten divertor • JET committed to 27 ITPA High Priority Coordinated Experimentsfor 2008, using more than 30% of overall run-time • Reports on IEA LTA Tasks 3, 4 and 7 were initiated, coordinated and compiled by EU IEA LTA & ITPA on JET during 2008

  17. Contacts Task Force Leaders/Deputies & CSU ROs • TF S1: Consolidation of ITER database and reference scenarios • G. Saibene (EFDA, Garching); T. Loarer (CEA, Cadarache); P. Lang (IPP, Garching); & D. Frigione • TF S2: ITER Advanced Scenarios • E. Joffrin (CEA, Cadarache); F. Rimini (CEA, Cadarache); V. Pericoli (ENEA, Frascati); & M. Laxåback • TF M: MHD • R. Koslowski (FZJ, Jülich) • TF H: Heating • M-L. Mayoral (UKAEA,Culham); J. Ongena (ERM/KMS, Brussels); & M. Laxåback • TF E: Exhaust • W. Fundamenski (UKAEA,Culham); S. Bresinsek (FZJ,Jülich); T. Eich (IPP, Garching); & M. Tsalas • TF D: Diagnostics • Murari (RFX, Padova); E. dela Luna (CIEMAT, Madrid); D. Mazon (CEA, Cadarache); • B. Goncalves (IST, Portugal); & M. Tsalas • TF T: Transport • V. Naulin (Riso, Denmark); T. Tala (TEKES, Finland); & D. Frigione • TF FT: Fusion Technology • C. Grisolia (CEA, Cadarache); P. Coad (UKAEA); & N. Bekris • TF DT: Deuterium-Tritium Operation • K-D. Zastrow (UKAEA, Culham); & M. L. Watkins

  18. Topics to which JET is committed (1)

  19. Topics to which JET is committed (2)

  20. Topics to which JET is committed (3)

  21. Topics to which JET is committed (4)

  22. Topics to which JET did not commit (1)

  23. Topics to which JET did not commit (2)

More Related