10:00:18 From  Volker Naulin  to  Denis Kalupin(Direct Message):
	I say a few words and then to you?
10:18:20 From  Joaquim Loizu  to  Everyone:
	Just a comment: here the simulations are electrostatic and so no MHD
10:18:37 From  Hartmut Zohm  to  Everyone:
	Thanks, Joaquim!
10:21:33 From  Marina Becoulet  to  Everyone:
	But BOUT++ is also fluid?
10:22:16 From  Volker Naulin  to  Everyone:
	yes, it is.
10:26:55 From  Andreas Dinklage  to  Everyone:
	Er is given by grad Ti in the edge?!
10:27:49 From  Andreas Dinklage  to  Everyone:
	Just a google QCM W7-AS reference https://aip.scitation.org/doi/pdf/10.1063/1.2909159
10:28:06 From  Joaquim Loizu  to  Everyone:
	We observe a negative radial electric field in the core and a positive Er in the SOL. The core neoclassical physics is missing.
10:28:44 From  Joaquim Loizu  to  Everyone:
	The core results are only valid if you think of it as a low temperature machine (e.g. TJ-K) where nu_star>>1 in the core as well
10:28:59 From  Andreas Dinklage  to  Everyone:
	@Joaquim: yes - that makes sense - but Er outside the LCFS is not self-consistently calculated, right?
10:29:25 From  Joaquim Loizu  to  Everyone:
	yes, outside Er is probably set by the sheath, i.e. phi~3T_e
10:29:40 From  Joaquim Loizu  to  Everyone:
	so it is self-consistent
10:31:48 From  Joaquim Loizu  to  Everyone:
	One last comment: GBS is not aiming at studying stellarator core physics. Only boundary. But we simulate the full volume because it is simpler than looking for appropriate core-boundary boundary conditions
10:33:34 From  Matthias Hoelzl  to  Everyone:
	JOREK is also extended to stellarators and we will try first simplified W7-X applications this year (so far only tested for simple configurations)
11:01:05 From  Gloria Falchetto  to  Everyone:
	IMAS can be extended
11:01:41 From  Gloria Falchetto  to  Everyone:
	datastructures to be added can be identified and proposed (JITRA trackers)
11:01:46 From  Gloria Falchetto  to  Everyone:
	JIRA
11:02:35 From  Samuel Lazerson  to  Everyone:
	@Matthias, yes I’m looking forward to seeing the JOREK simulations of W7-X.
11:03:39 From  Matthias Hoelzl  to  Everyone:
	@Samuel: Let's see how far we get there. Garching and Greifswald are working together on this in the future. From Greifswald side, Ksenia Aleynikova is involved since very recently. From Greifswald side, the main developer Nikita Nikulsin is leaving and we have to clarify who will continue the work from our side
11:04:08 From  Matthias Hoelzl  to  Everyone:
	Sorry, typo: From Garching side, the main developer Nikita Nikulsin...
11:40:23 From  Joaquim Loizu  to  Everyone:
	@Hartmut: not sure this is rigorous enough for these goals, but here is some attempt:
11:40:24 From  Joaquim Loizu  to  Everyone:
	https://iopscience.iop.org/article/10.1088/0029-5515/55/6/063026
11:41:25 From  Samuel Lazerson  to  Everyone:
	That paper has some VERY spurious conclusions.  Which were later shown to be incorrect.
11:42:00 From  Joaquim Loizu  to  Everyone:
	Not gonna defend it :)
11:42:27 From  Joaquim Loizu  to  Everyone:
	I am curious about these incorrect conclusions, maybe you can explain to me offline
11:42:43 From  Samuel Lazerson  to  Everyone:
	http://scitation.aip.org/content/aip/journal/pop/22/7/10.1063/1.4923017
11:42:56 From  Samuel Lazerson  to  Everyone:
	That’s the more rigorous version.
11:43:10 From  Joaquim Loizu  to  Everyone:
	thanks!
11:43:51 From  Samuel Lazerson  to  Everyone:
	The general conclusion about VMEC from the A. Reiman paper was that it was doing something ‘wrong’.  This was later found to be just due to how the code was being run.
11:45:17 From  Samuel Lazerson  to  Everyone:
	And the paper which attempts to understand what VMEC does at a rational surface is here (shameless self-promotion warning):
11:45:19 From  Samuel Lazerson  to  Everyone:
	http://scitation.aip.org/content/aip/journal/pop/23/1/10.1063/1.4939881
11:47:12 From  Joaquim Loizu  to  Everyone:
	looking back, this was a great paper!
11:49:53 From  Samuel Lazerson  to  Everyone:
	Also, we should keep in mind there is a peeling-ballooning code for VMEC called PB3D (https://pb3d.github.io/).
11:59:59 From  Tilmann Lunt  to  Everyone:
	@Andreas&Hartmut: in a different context we discussed shoting an electron beam in the pure TF field and measure the poloidal displacement due to the drifts. I don't remember the main argument against that, but the experts were not convinced by this idea
12:01:53 From  Samuel Lazerson  to  Everyone:
	@Tillman.  Hasn’t someone done this in smaller Tokamaks?
12:03:49 From  Hartmut Zohm  to  Everyone:
	@Denis: I think the host can dump all comment into a file. Would you please do this and send to me (there are very interesting comments in there which I could not follow during my talk)?
12:04:42 From  Andreas Dinklage  to  Everyone:
	I'm interested as well - maybe you add it to the INDICO materials of the meeting ? Thanks
12:08:08 From  Hartmut Zohm  to  Everyone:
	I was just informed how everyone can do that: klick on the three points and you can save it locally ;-)
12:08:20 From  Hartmut Zohm  to  Everyone:
	(thanks, Mattia ;-) )
12:09:50 From  Andreas Dinklage  to  Everyone:
	right - but it's gone when the meeting is over ... think it would be great if Denis could take care that we keep the file on INDICO - thanks!
12:16:27 From  Tilmann Lunt  to  Everyone:
	@Sam: could very well be, but in AUG I am not aware
12:20:19 From  Samuel Lazerson  to  Everyone:
	@Tillman: it was KSTAR: https://www.sciencedirect.com/science/article/pii/S0920379610003418
12:24:19 From  Joachim Geiger  to  Everyone:
	The bootstrap current in stelarators in General is much more complicated than using just a proportionality to the pressure Gradient. That's just to be remembered.
12:25:08 From  Samuel Lazerson  to  Everyone:
	There is also the issue of the susceptance matrices for the equilibrium.  Which relate current to changes in iota, irrespective of where the current arrises from (bootstrap or driven).
12:27:23 From  Joachim Geiger  to  Everyone:
	Additionally for an optimized Stellarator like W7-X there are dependencies of the mono-energetic Transport coefficients on the self-consistent radial Electric field. It is not that easy.
12:29:07 From  Joachim Geiger  to  Everyone:
	The pressure jumps are balanced by Surface currents.
12:30:21 From  Joachim Geiger  to  Everyone:
	… on the interface surfaces.
12:32:55 From  Joaquim Loizu  to  Everyone:
	@joachimgeiger: yes, I agree that bootstrap current can be very complicated…but we have to start somewhere :) In any case, SPEC is not gonna tell us what is the bootstrap current, so I am open to any improved model :)
12:36:41 From  Joachim Geiger  to  Everyone:
	Dear Joacquim, my Statement is not against the Approach in the studies. Thus, we agree with each other.