L to H and H to L transition in dynamic plasma actor with ActorPedestal

[TimSlendebroek]

This is done by triggering a Tanh like response in temperature and density and going from EPED to WPED

L to H is looking good

H to L looks finicky because WPED couples ped and core making dramatic shifts

extra parameters

act.ActorPedestal.tau_n = 0.3
act.ActorPedestal.tau_t = 0.2
act.ActorPedestal.density_ratio_L_over_H = 0.2

Time dependent example on DIIID

https://github.com/ProjectTorreyPines/FuseExamples/blob/master/L_to_H_diid.ipynb

Some evolutions::

H mode triggered by power spike @ 0.39 seconds and L mode by decrease in power around 0.89

[codecov]

Codecov Report

Attention: Patch coverage is 14.28571% with 66 lines in your changes missing coverage. Please review.

Project coverage is 59.53%. Comparing base (a6d5ae7) to head (197595a).

Files with missing lines	Patch %	Lines
src/actors/pedestal/pedestal_actor.jl	16.07%	47 Missing ⚠️
src/utils_end.jl	0.00%	9 Missing ⚠️
src/utils_begin.jl	0.00%	6 Missing ⚠️
src/optimization.jl	0.00%	3 Missing ⚠️
src/actors/pedestal/WPED_actor.jl	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #807      +/-   ##
==========================================
- Coverage   59.76%   59.53%   -0.23%     
==========================================
  Files         105      105              
  Lines       10501    10551      +50     
==========================================
+ Hits         6276     6282       +6     
- Misses       4225     4269      +44     

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