SLiM

The Slab Like Microtearing mode (SLiM) model

Overview

This software provides a rapid assessment of the slab-like microtearing mode using a global linear dispersion model, which takes 50ms to calculate the growth rate and frequency of a given mode on the personal computer. Potentially uses 10^-7 of the computation resources for discharge study. For detail, one can check on the site (under construction): https://www.drmcurie.com/project-page/Research_Projects/SLiM

The package can be download via pip: pip install slim_phys

GitHub repo: https://github.com/maxtcurie/SLiM

for more detailed information, please check wikipage: https://github.com/maxtcurie/SLiM/wiki

Executable the program:

Determine the stabilities of the MTM for different mode numbers

• GUI: GUI/mode_finder.py (under the folder GUI)
• script: Templet/mode_finder (under the folder Templet)

Plot the modified the safety factor (q) to see if the rational surfaces are intersected with the q profile.

• GUI: GUI/Plot_q_modification.py (under the folder GUI)
• script: Templet/Plot_ome_q_surface_demo.py (under the folder Templet)

Calculate dispersion

• script: Templet/Dispersion.py (under the folder Templet)

Tutorial

APS 2021 invited talk about SLiM model:

https://youtu.be/j2MYfGwlBYY

Playlist for tutorial on running the SLiM model:

https://youtube.com/playlist?list=PLgNi5MiqkBWagsB8yRjRncsz1D4oeedQB

How to use GUI:

mode finder GUI: https://youtu.be/R_-ldYNvmhU

plot modified safety factor GUI: https://youtu.be/L01xl_e1bpM

Citation

This software is based on the following articles and presentations, please the cite those articles in the publications uses such software package:

1. M.T. Curie, J. L. Larakers, D. R. Hatch, A. O. Nelson, A. Diallo, E. Hassan, W. Guttenfelder, M. Halfmoon, M. Kotschenreuther, R. D. Hazeltine, S. M. Mahajan, R. J. Groebner, J. Chen, C. Perez von Thun, L. Frassinetti, S. Saarelma, C. Giroud, M. M. Tennery (2022) “A survey of pedestal magnetic fluctuations using gyrokinetics and a global reduced model for microtearing stability” Physics of Plasmas (Editor’s Pick) https://doi.org/10.1063/5.0084842

2. J.L. Larakers, M. Curie, D. R. Hatch, R. D. Hazeltine, and S. M.Mahajan, 2021) “Global Theory of Microtearing Modes in the Tokamak Pedestal” https://doi.org/10.1103/PhysRevLett.126.225001

3. M. Curie, J.L. Larakers, D.R. Hatch, A. Diallo, E. Hassan, O. Nelson, W. Guttenfelder, M. Halfmoon, M. Kotschenreuthe, S. M. Mahajan, R. J. Groebner (2021)”Reduced predictive models for Micro-tearing modes in the pedestal” APS DPP https://doi.org/10.13140/RG.2.2.27713.48482

4. M. Curie (2022) “Simulations and reduced models for Micro-tearing modes in the Tokamak pedestal” Ph.D. Dissertation https://doi.org/10.13140/RG.2.2.24468.37769

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