FUSE meeting notes: Sep 5 2023

[orso82]

Orso

• Good progress on time dependence
  • Overhauled how initialization works
  • Question, how to drive current down without getting a RFP?
    • How is it done in experiments?
  • Saw some weird QED current evolution behavior on axis
• Improved HFS actor
• Ideas for better merging core-pedestal
• Lots of progress on IAEA sharepoint

Amani

• Will be joining GA as technical solution architect
• Capture team
• Jim Leuer's paper published, cite for sharepoint

Discussion: a lot of updates for asian (and European) roadmaps toward a FPP

Tim

• Run some quick K-DEMO simulations in FUSE
• Korean LTS Technology should exceed the ITER technology
• TGLF-nn and TGLF give similar results (in value, not in convergence)
• This exercise is of interest for KFE

David

• Things take a long time to converge to higher betan
  • Faster convergence when we ease some constraints
  • If max poloidal flux is too low, that limits max betan
• Most efficient way to run the optimizer is to use double the number of processors as individuals in population
• Memory issue stands, and needs further investigation

Tom

• Finished training SAT3 on DIII-D parameters
  • Better convergence
• ITER retraining
  • DB generated by perturbing starting from few cases
  • Normalization of the data for each batch
  • Very important to get proper accuracy when different channels have widely different ranges
• Now revisited FPP training
  • We need to bundle D and T together to circumvent TGLF bug
  • Working with Nan to get more data

Jackson

• Adding BoP to Sharepoint

Brendan

• A Julia module for reading M3Dc1 module
  • Bounding box hierarchy (tree of bounding box)
  • To get logN complexity

Adriana

• Added costing stuff to IAEA paper
• Neo branch to be merged in
• Found some bugs in Hirshmar-Sigmar
• Will want to add GACODE-specific physics functions to IMAS.jl and then reference those when necessary, rather than repeating

Brian

• Input for 3rd quarter in 2 weeks
• Review milestones
• IR&D leads will present at MFE level
• Energy review will only be Brian presenting