WIMAS-2 Weekly Meeting

Wednesday 28 Oct 2020, 10:00 → 11:00 Europe/Berlin

https://kth-se.zoom.us/j/7764082514

Thomas Jonsson

WIMAS-2 Weekly Meeting are technical meetings to plan and coordinate the development of the ETS-6 workflow.

 

Remote participation:

https://kth-se.zoom.us/j/7764082514

1 ETS-6 News

Speaker: Thomas Jonsson

1. Merged branches

• flux: Revised flux calculations; both interpretative and interpretative.
  • Correct units; some from W -> W/m^2
  • Fixes in eV/s -> W normalisation
  • Update interpretative particle fluxes outside core-edge boundary (internal boundary)
  • Update interpretative particle fluxes after the quasi-neutrality equation
  • Program using physics-quantities - rewrite code in terms of intuitive quantities that can be tested.
  • BUT there are still some issues. We do not always have energy and particle balance. 

 

2. New actors

"penn"

• Neural-nework based pedestal actor from Andreas Gillgren
• Valid only for JET and AUG H-modes 

"solpsz1"

• Edge-actor from ITER
• Valid only for ITER and DEMO H-modes 

"source_analytical"

• New actor from David Coster.
• Use formula to create source terms, e.g. Gaussian sources.
• Regression test added.

"fusion_sources"

• New actor from David Coster.
• Calculate sources and sinks from thermal-thermal fusion reactions.
• Regression test added.

"runaway-indicator" and "runafluid"

• Added to ETS-6 workflow.
• hcd2core_profiles has been updated to handle runaway sources (the run-away current).

"afsi"

• Updated implementation in the workflow.
• Tested; seems to give reasonable power sources, but particle sinks have the wrong sign.
• Regression test added.
• Both hcd2core_profiles and nbisim2 has been updated to be compatible with the special input produced by afsi.

"FoPla"

• ICRH+NBI Fokker-Planck code from Dirk, Ernesto and Philippe.
• Previously in dedicated ETS-5 branch.
• Now integrated in ETS-5 and also added in an test-version of the ETS-6.
• Actor is not in the official actor release.
• Still some work needed before an official release.

"fusreac"

• Fusion source code for non-thermal fusion products stored in distributions from either StixRedist or FoPla.
• Added to actor release, but not yet in the ETS-5, nor ETS-6 workflows.

2 Actions from previous meetings

https://docs.google.com/spreadsheets/d/1Ps-cGQyKNsYTObCr5Kqu58bXBNQdH45Fjpz5QD0hLB0/edit?usp=sharing

Speaker: Thomas Jonsson

See https://users.euro-fusion.org/iterphysicswiki/index.php/The_public_IDS_database

 

3 Report from sprint "Verification on ITER Scenarios" and "Core-Edge"

Speakers: Nathan Cummings (CCFE), Thomas Johnson (Fusion Plasma Physics (KTH/VR))

ITER_scenarios_sprint.pptx

Summary of WIMAS-2 Sprint on Core-Edge.pptx

Sprint on Verification on ITER Scenarios (Nathan)

NC: We need to fix statement in the wiki on which NEMO (CPO or IDS) is most recent

NC: Difference found in B-field.

AP: Distinguish ion and electron sources?
TJ: No

JF: How long times were simulated?
NC: 3s

JF: How often did you update the equilibrium?
DY: The equilibrium was updated during initialisation and then kept static.

JF: Was fast pressure included in the equilibrium calculations?
TJ: Not in ETS-6.
DY: Not sure if there’s fast pressure on input.

JF: Should we disable NEMO?
RC: “I’ve had lots of problems with NEMO in ETS-5 but Mireille refuses to maintain CPO version”
TJ: NEMO may still be useful in JET, where the beam look different.

JF: ETS-6 seems to be working!

TJ: Do you think an ETS-6 simulation with sources and transport coefficients from JINTRAC could be a good benchmark against JINTRAC?
JF: Good idea! We’ve done many similar studies in the past. Usually you find differences in conventions etc, and we may need to discuss with the JINTRAC team to understand these.

---

NC: Nathan Cummings
AP: Alexei Polevoi
JF: Jorge Ferreira
DY: Dmitriy Yadykin
TJ: Thomas Jonsson
RC: Rui Coelho

4 t.b.d.

5 Any other business

Future sprints

TJ: We have an ETS-6 training at the end of November. Before this Pär is planning a sprint on ETS-5, and the ETS-6 training would be a continuation on the ETS-5 one. We need to announce both training asap.

TJ: What sprints do we need to prepare for the training?

• TJ: We need a "Prepare for training" sprint the week before the training.
• DC: We should have a training Core-Edge training next week.
• TJ: I'll send an email to plan such a sprint.
• DC: We need to prepare a good ITER case for SOLPSz1 for this training.

DC: We need to prepare a number of use-cases for training session:

• DC: JET and AUG cases for PENN
• DC: JET and/or AUG cases for CEC
• DC: ITER case(s) for SOLPSz1
• DC: Possibly we may have Theobaldis model for AUG.
• DY: We should ask trainees to suggest use cases.

 

FoPla

DY: I plan to release ETS-5 with FoPla later tonight.
JF: This is needed for the EWE sprint.