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FUSION SCIENCE CENTER FOR EXTREME STATES OF MATTER AND FAST IGNITION PHYSICS

FSC. FUSION SCIENCE CENTER FOR EXTREME STATES OF MATTER AND FAST IGNITION PHYSICS. OVERVIEW. R. Betti for the Fusion Science Center team UR, MIT, UCSD, OSU, UNR, UT, UCLA, GA, LLNL. 5 th FSC Meeting, Chicago IL, February 28, 2007. FSC. FSC Members – Faculty and Senior Research Scientists.

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FUSION SCIENCE CENTER FOR EXTREME STATES OF MATTER AND FAST IGNITION PHYSICS

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  1. FSC FUSION SCIENCE CENTER FOR EXTREME STATESOF MATTER AND FAST IGNITION PHYSICS OVERVIEW R. Betti for the Fusion Science Center team UR, MIT, UCSD, OSU, UNR, UT, UCLA, GA, LLNL 5th FSC Meeting, Chicago IL, February 28, 2007

  2. FSC FSC Members – Faculty and Senior Research Scientists D. Meyerhofer (UR-LLE) W. Mori (UCLA) R. Petrasso (MIT) C. Ren (UR-LLE) Y. Sentoku (UNR) R. Stephens (GA) L. Van Woerkom (OSU) F. Beg (UCSD) R. Betti (UR-LLE) D. Correll (LLNL) T. Cowan (UNR) T. Ditmire (UT) R. Freeman (OSU) M. Key (LLNL) A. McKinnon(LLNL) C. Li (MIT)

  3. FSC FSC Members – Research Associates, Post docs, PhD students Graduate Students D. Casey (MIT) C. Chen (MIT) G. Dyer (UT) B. Ick Cho (UT) N. Jang (UR) S. Kneip (UT) E. Shipton (UCSD) M.Tzoufras (UCLA) C. Zhou (UR) T. Ma (UCSD) A. Link (OSU) V. Ovchinnikov(OSU) R. Weber (OSU) A. Kryger(OSU) G. Li (UR) R. Yan (UR) T. Wang (UCLA) B. Crisman (UNR) Members – Post docs and Res. Assoc. K. Anderson (UR) E. Baronova (UCSD) O. Gotchev (UR) F. He (UCSD) P. Nelson (UR) J. Pasley (GA) M. Wei (UCSD) J. Jing (UCSD) A. Solodov (UR) J. Tonge (UCLA) R. Riggs(MIT) V. Decyk (UCLA) W. Theobald (UR)

  4. FSC HEDP RESEARCH AND EDUCATION ARETHE TWO GOALS OF THE FSC FAST IGNITION WORKSHOP and MINI-CONFERENCE HEDP SUMMER SCHOOL FI INTEGRATED SIMULATIONS Other HEDP e-TRANSPORT and LPI FUEL ASSEMBLY

  5. FSC The FSC has sponsored the 9th international FAST IGNITION WORKSHOP NOVEMBER 3-5, 2006, CAMBRIDGE, MA • 94 attendees from 8 countries • 66 presentations • Presentations on FSC web site Francis Thio(DOE/OFES program manager for HEDP): “the FSC is doing everything right”

  6. FSC The FSC is sponsoring the 2007 HEDP summer school. ILSA is cosponsor. • Organizing Committee: • F. Beg (Chair) • Solodov • R. Betti Program Committee: R. Petrasso (Chair) T. Ditmire R. Freeman

  7. FSC Summer school in HEDP, July 29-August 4, 2007 UCSD Campus • Waiting for contract • revisions from UCSD •  ILSA contributes 10K • Our goal is to provide 50 scholarships • Application deadline is March 15 • Preliminary program is available online • Proceedings to the Journal of HEDP? UC Berkeley’s IMDEC would like to co-sponsor

  8. FSC activities on the hydrodynamics for Fast Ignition: Theory Simulations Experiments How to design and field an implosion for fast ignition fuel assembly ?

  9. FSC The hydro-theory of FI fuel assembly is developed by the FSC. Low velocity, low adiabat implosions are optimal for FI • Fast ignition implosion: • Low Velocity Vi • Low adiabat  • Large mass Optimum density for fast ignition R. Betti and C. Zhou, Phys. Plasmas 12, 110702 (2005); R. Betti et al, Plasma Physics Cont. Fusion 48, B153 (2006) R. Betti and C. Zhou, J. Phys. IV 133, 59 (2006) C. Zhou and R. Betti, submitted to Phys. of Plasmas TC7377

  10. FSC FSC target designs for direct-drive fast ignition use massive wetted foam shells insensitive to fluid instability 25 kJ 40 m 90 m 298 m R3g/cm2 R1.9g/cm2 R0.7g/cm2 <>300-500g/cm3 R. Betti, A.A. Solodov, J.A. Delettrez, C. Zhou, Phys. Plasmas 13, 100703 (2006)

  11. 2D simulations of ignition and burn by 15kJ, 2MeV, 20µm, 15ps e-beam FSC 2D simulations of ignition by fast electrons and burn propagation yield fast ignition gain curves Maximum FI gain at 300g/cc 200 Gain 150 200kJ PW 100kJ PW 100 50 NIF Direct-Drive 0 0.5 1 1.5 2 2.5 Driver Energy (MJ) FI allows for significant gains with a few hundred kJ laser driver R. Betti, A.A. Solodov, J.A. Delettrez, C. Zhou, Phys. Plasmas 13, 100703 (2006)

  12. Secondary proton spectrum a.u. D2 or D3He FSC 0 5 10 15 Energy (MeV) measured predicted Slow implosions with low adiabat were tested on OMEGA D-3He fusion proton energy loss measured the high R EL20kJ P25-34atm1.3 V2•107cm/s • Peak R is 0.26g/cm,2 the highest R to date on OMEGA • Empty shells would achieve R0.7g/cm2 and stop 4MeV electrons C. Zhou, W. Theobald, R. Betti, P.B. Radha, V. Smalyuk, C.K.Li et al, Phys. Rev. Lett. 98: 025004 (2007)

  13. 15-MeV proton backlighter (imploded D3He-filled capsule) Imploding cone-in-shell capsule 2.7 mm imaging detector FSC Proton radiography is used to measure E and B fields and areal densities in FI implosions Protons per unit area on detector

  14. 4 0 0 150kJ shock CH 2m CH(DT)6 106m 3 0 0 DT ice DT ice 240m Power (TW) 2 0 0 FSC DT gas DT gas 250kJ Assembly 1 0 0 506m 0 0 5 1 0 Time (ns) Fast ignition targets can also be ignited by a spherically convergent shock R. Betti, C. Zhou, K. Anderson,J. Perkins, A. Solodov, in press in Phys. Rev. Lett.

  15. CH 40μm FSC D2 25atm 390μm The shock ignition concept has been tested on OMEGA PULSE SHAPES WITH and WITHOUT SHOCK-SPIKE 1 8 1 6 1 4 1 2 1 0 Power (TW) 8 6 EL=17-18kJ 1.3 4 2 0 0 1 2 3 4 5 Time (ns) W. Theobald, R. Betti, C. Zhou

  16. FSC activities on electron generation transport : Theory Simulations Experiments Can large numbers of fast electrons be generated by the intense laser light-plasma interaction, their energy transported and efficiently deposited in the dense core?

  17. FSC Recent FSC experiments at RAL and TITAN study e-transport in wires and heating by the return current Wire targets 1ps pulse 1.71020W/cm2 10µm spot Beg, Freeman, Stephens, Key, Pasley, Wei, Van Woerkom

  18. FSC FSC experiments on THOR, show that fast electron generation is enhanced in sphere coated targets K- emission X16 field enhancement Silicon Silicon K- Emission at 7.1A Ditmire, Cho, Dyer, Sumeruk, Edens, Grisby, UT

  19. FSC Particle simulations show the generation of a channel with electron density ~0.05nc Channeling in underdense plasma Contours of electron density C. Ren, G. Li, J. Tonge, W. Mori, Fast Ignition Workshop, Cambridge MA, 2006

  20. FSC FSC 2D integrated cone-simulations with PICLS show relatively low energy electrons and large magnetic fields Electron energy spectrum Electron density Quasi-static Magnetic fields Y. Sentoku and T. Cowan

  21. FSC Integrated PIC simulations with an absorbing core show lower energy electrons reaching the core Electron energy spatial distribution Energy Spectrum J. Tonge and W. Mori

  22. FSC FSC FSC CALENDAR: TO DO LIST • 2007 Annual Review by end of next week • FSC overview at the OFES Budget Meeting (March 15) • Summer school admissions (March 15-30) • HEDP Summer School (July 29-August 4) • Next FSC meeting (August 5-6) • FSC Renewal Proposal (Early 2008). Publish, publish, publish.

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