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PSI-Center goal

PSI-Center goal. Needs all our features verified and validated We have made great progress but have more to do. Planned status of code development by March 2018. X: published validation V: installed and verified D: development work in progress P: proposed new work. Goals of meeting.

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PSI-Center goal

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  1. PSI-Center goal • Needs all our features verified and validated • We have made great progress but have more to do

  2. Planned status of code development by March 2018 X: published validation V: installed and verified D: development work in progress P: proposed new work

  3. Goals of meeting Quantitative validation Review validation work Code work and validation plans Make plans for developing most features by March 2018. Estimate needed resources: Postdocs, Gradstudents. Future mission and scope of PSI-Center Additional results

  4. Present status of 3D code development X: published validation V: installed and verified D: development work in progress P: proposed new work

  5. Suggested status of code development by March 2015 X: published validation V: installed and verified D: development work in progress P: proposed new work

  6. Planned status of code development by March 2018 X: published validation V: installed and verified D: development work in progress P: proposed new work

  7. Scope increase needed to meet goals

  8. PSI Center needs to change its mission • Mission: Contribute to the development of future predictive simulation of large whole experiments and support small experiments that address fusion issues. • Mission may demand an increase in scope.

  9. PSI-Center supports the advance of tokamaks • Contributes to future predictive simulation of large whole tokamaks • Advance validation science • Develop validation processes • Simulate whole plasma experiments • Develop both physical and numerical code features needed for whole tokamaks • Support small experiments that address tokamak issues

  10. PSI-Center develops and validates code features needed for future whole tokamak and future EPR simulations

  11. PSI-Center experiments contribute to solution of tokamak and future EPR issues

  12. Increased scope of PSI-Center • Need to trade accuracy for speed (implicit time step?) • Need to develop error bars on computational results • Contribute to the development of validation science • Validate with more experiments • Have our features by March 2018

  13. We have to be more rigorous • Make validation a hard science • BODs might help. • Validate with experimental data before you interpret experiment • Need quantitative agreement for valid interpretation • Logically you can not “learn” about an experiment from an invalid simulation

  14. Summary • We contribute to future predictive simulation of large whole tokamaks • Advance validation science and processes through simulation of whole plasma experiments • Develop both physical and numerical code features needed for whole tokamaks • Support small experiments that address tokamak issues • Need to be able to trade speed for accuracy with error bars • Need to validate at higher parameters • Validate with any experiment • DOE small experiment get priority • We have to be more rigorous

  15. Is NIMROD pessimistic? • Low Temperatures on SSPX • Low current gain on HIT • Low closed current on NSTX • Reconnection is slower even in two-fluid.

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