Pauli

Wolfgang Pauli Institute, Vienna

13th Plasma Kinetics Working Meeting
  25 July - 5 August, 2022

SOC: A. Schekochihin (Oxford) & M. Kunz (Princeton)




10th
                Anniversary Beast
TOPICS

USEFUL PLASMA PHYSICS:
  • Electromagnetic turbulence in tokamaks/high beta
  • ICM turbulence/really high beta
  • Sheared, bistable turbulence in tokamaks
  • Imbalanced turbulence in the solar wind
  • MHD miscellany
USELESS PLASMA PHYSICS:
  • Collisionless relaxation and phase-space turbulence
  • Quasilinear theory redux
JPP


If you know exactly what you are going to do, what is the point of doing it? Pablo Picasso
He goeth furthest who knows not whither he is going. Oliver Cromwell

Every line in your calculations ends with "=0". You are not making much progress!
Kate Hammett
We don't do the calculation because we don't know the answer, we do it because we have a conscience. Bryan Taylor
Let's change the resolution on the Unknown.
Gabe Plunk
Working together takes more than one person. Bill Dorland
We can't do ultraviolence to that square bracket. Ian Abel
Field lines are forever. Bryan Taylor
This is not really an ill-posed problem, this is not a problem at all. Paul Dellar
I am just doing mathematics at the moment, but it is mathematics that has some point. Bryan Taylor
The equivalent of God in MAST is MHD, which is global and all-powerful. Anthony Field
We have crossed all the i's and dotted all the t's. Job's a good'un. Ian Abel
Let us not jump in front of the bandwagon! Alex Schekochihin
It's not the triviality, it's the emptiness of it that bothers me.
Bryan Taylor
Never take 0 for an answer. Alex Schekochihin
This is a very inefficient way of achieving nothing.
François Rincon
For the sake of fairness, let me mention that some people have objections to this, none of which are particularly valid. Chris Chen
This is more or less right. Perhaps less. Alfred Mallet
Too simple? At the end of my talk, you will beg for simplicity! Andrey Beresnyak
What is the point? The point is not the point! Anonymous
This is why I am presenting this here and nowhere else: nothing is solved!
Ian Abel
Previous studies of this problem have been either unsatisfactory or limited in scope.---What  is the difference between those?---This means either wrong or irrelevant. Anatoly Spitkovsky, Michael Medvedev & Steve Cowley (in conversation)
I don't give a damn about astrophysics, explain to me what is going on.
Anatoly Spitkovsky

It is better to be vaguely right than exactly wrong. Carveth Read (usually attributed to Maynard Keynes)



Have you subtracted the baby with the bathwater? Steve Balbus
 
This is not rigour, unless you mean rigor mortis. Ian Abel
I wouldn't say these are theoretical arguments... Let's just call them arguments. François Rincon
This qualitative explanation is not of sufficient quality. Eugene Churazov
If you mean it seriously, this is actually a very good question. Minhyong Kim
This paper is a tour de farce.
Ian Abel
What is modelling? You run a simulation, you compare. If it coincides, great! If it doesn't coincide, fuck! Felix Parra
I have seen papers where the student wasn't the problem. Michael Hardman
There has been a lot of fascinating work on this subject, most of it kind of boring. Philipp Kempski
So now you want us to drop everything we are doing and start worrying about what the big questions are?! Ian Abel
Oh dear, I thought I had some conclusions. Nuno Loureiro
I've got my little fingers inside this plasma. Steve Cowley
Words will play a big role in this talk. Dmitri Uzdensky
Everything that can be done should be done---and that's the astrophysical attitude. Michael Medvedev
What I will talk about is not low-hanging fruit. A lot of people have looked at this. There is no fruit here at all.---What about sour grapes? Michael Medvedev & Nuno Loureiro
In order to have a disappointment, you first have to have an appointment. Alex Schekochihin
In our experiment, we observed strong absence of magnetic energy. Archie Bott
Much as I somewhat hate this approach... Peter Davidson
Your infinity is my zero.
Mantas Abazorius
If I had known the outcome of this calculation, I would never have done it. Michael Hardman

Now that everyone knows this is the new Pandora's box, they are all going to jump into it. François Rincon

[these quotes are mostly from Oxford plasma seminars and the Vienna meetings]
Invited Participants

Name Affiliation Week I
Week II
h

Seminar Title
Background Reading
Download
Toby Adkins
Oxford
24-
-5
B
N
Electromagnetic instabilities and turbulence driven by the electron-temperature gradient (45 min)
arXiv:2201.05670
+nonlinear update
pdf
(3Mb)
Claude Bardos
Paris 6&7/WPI

1-7
F
Y
[see Besse]


Michael Barnes Oxford
24-29

H
N
Bistability: a curio or a universal feature of sheared plasma turbulence
arXiv:2109.07757
pdf
(6Mb)
Nicolas Besse
OCA Nice
27-
-7
F
Y
[with Bardos] Mathematical approach to quasilinear approximation
JMP 62, 101505 (2021)
arXiv:2011.08085
pdf
(350kb)
Archie Bott Princeton>Oxford
24-30
zoom
B
N
Thermodynamics and collisionality in firehose-susceptible high-beta plasmas (30 min)
ApJ 922, L35 (2021)
+ new preprint soon
pdf
(19Mb)
Peter Catto MIT
zoom
zoom


A collisional interpretation of the quasilinear delta function and other observations (30 min)
JPP 86, 815860302 (2020)
JPP 87, 905870606 (2021)
pdf
(3Mb)
Ben Chandran
New Hampshire

31-4
H
N
MTMs in spherical tokamaks (a discussion)
background:
NF 20, 1439 (1980)
NF 62, 016009 (2022)
+preprint soon
on
request
Steve Cowley PPPL
25-
-5
B
N
Equilibrium, energy and instability

on
request
Ilya Dodin PPPL
24-30

H
N
Quasilinear theory: incorporating plasma inhomogeneity and collisions from first principles (30 min)
arXiv:2201.08562
pdf
(2Mb)
Robbie Ewart
Oxford
24-
-6
?
N
1) Collisionless collision integrals: the bad, the worse, and the ugly (30 min)
2) Lynden-Bell equilibria, power tails, NTPA, and PIC codes
arXiv:2201.03376
+preprint soon
1) pdf
(600kb)

2) on
request
Jean-Baptiste Fouvry
IAP
25-
-8
B
N
1) Kinetic blockings and 1/N^2 kinetic theory (20 min)
2) Linear response theory and damped modes of stellar clusters (20 min)
1) PRE 102, 052110 (2020)
2) MNRAS 509, 2443 (2022)
1) pdf
(280kb)

2) pdf
(3Mb)

Michael Hardman
Oxford

31-5
B
N
1) Toroidal microtearing modes: kinetic and fluid models in the limit of low beta in general axisymmetric magnetic geometry
2) Pushing the toroidal electromagnetic theory to high beta: matching conditions in the collisional limit
arXiv:2208.10615
on
request
David Hosking
Oxford>Princeton
22-30

?
Y
Correlation integrals and how to use them: a discussion
PRX 11, 041005 (2021)
arXiv:2202.00462
arXiv:2203.03573
pdf
(8Mb)
Plamen Ivanov
Oxford
zoom
31-5
B
N
Drift kinetic linear theory
preprint soon
on
request
Jean Kempf
Toulouse
zoom
30-6
P
Y
[with Rincon] MTI simulations and modelling future X-ray observations
on
request
Matt Kunz Princeton
24-31

H
N
1) Intro+some updates and adverts on dynamo and other things
2) [see Bott, Majeski, Winarto, Yerger]
1) arXiv:2201.07757
pdf
(16Mb)
Nuno Loureiro MIT
24-29
zoom
H
N
Reconnection onset and realisability (1 hr)

pdf
(1.4Mb)
Stephen Majeski
Princeton
24-30
zoom
F
N
Microphysically modified magnetosonic modes in collisionless, high-beta plasmas (15 min)
background:
JPP 86, 905860603 (2020)
PRL 119, 155101 (2017)
pdf
(5Mb)
Alfred Mallet
SSL Berkeley
zoom






Norbert Mauser
U of Vienna/WPI







Romain Meyrand
Otago
24-
-6
B
N
Basic properties of reflection-driven Alfven-wave turbulence (30 min)
background:
ApJ 707, 1659 (2009)
pdf
(35Mb)
Michael Nastac
Oxford
24-
-5
F
N
A solvable model of entropy cascade in nearly collisionless plasmas
background:
JPP 84, 905840107 (2018)
+preprint soon
on
request
Felix Parra Diaz PPPL

zoom





Cornelius Rampf
U of Vienna/WPI




Guest seminar: Tygers (early-time resonances and singularities in the inviscid Burgers equation) (30 min)
preprint from author
pdf
(4Mb)
François Rincon Toulouse
24-
-6
P
Y
1) [see Kempf]
2) Chasing asymptotic nonlinear large-scale dynamos
3) Summary/discussion of the meeting
2) PRF 6, L121701 (2021)
2) pdf
(57Mb)

3) pdf
(54Mb)
Alex Schekochihin Oxford
24-
-5
H
N
In search of universality: towards a statistical mechanics of collisionless plasma [see also Ewart and Nastac]
notes ch 9-12
(being revised)
pdf
(13Mb)
Jono Squire Otago
24-
-5
H
N
1) The helicity barrier (30 min)
2) Large-amplitude Alfven waves (15 min)
1) Nature Astron. (2022)
JPP 87, 535870301 (2021)
2) arXiv:2206.07447
1) pdf
(10Mb)

2) pdf
(8Mb)
Dmitri Uzdensky
CU Boulder
zoom
zoom


Designing mesoscopic-box PIC-based subgrid prescriptions for kinetic microphysics and embedding them into global MHD simulations

pdf
(600kb)
Hima Winarto
Princeton
24-31
zoom
B
N
Tearing and mirrors (15 min)
JPP 88, 905880210 (2022)
pdf
(3Mb)

Evan Yerger
Princeton
zoom
29-6
F
Y
Diagnosing collisionality in PIC simulations/Suppressed heat conduction in the ICM via the whistler heat flux instability

pdf
(3Mb)
Vladimir Zhdankin
Flatiron
zoom
31-7
B
N
Generalised entropy in collisionless plasmas: navigating an uncertain landscape
PRX 12, 031011 (2022)
JPP 88, 175880303 (2022)
pdf
(8Mb)
Muni Zhou
MIT--->IAS
zoom



Intermittency and electron heating in KAW turbulence
arXiv:2208.02441
pdf
(9Mb)

Timetable

WEEK 1

Monday 25 July
Tuesday 26 July
Wednesday 27 July
Thursday 28 July
Friday 29 July
9:30 Coffee
9:45 Welcome/self-intros
9:30 Coffee 9:30 Coffee 9:30 Coffee 9:30 Coffee
DYNAMO
Kunz-1
Rincon-2
MHD
Hosking
Squire-2
MICROINSTABILITIES
Bott
Majeski
QLT
Fouvry-1
Dodin
COLLISIONLESS
RELAXATION
Nastac
Ewart-1

Lunch/work/play
Lunch/work/play
Lunch/work/play Lunch/work/play Lunch/work/play
16:00 Coffee
16:00 Coffee 16:00 Coffee 16:00 Coffee 16:00 Coffee
RECONNECTION
Loureiro
Winarto
(BI)STABILITY
Cowley
Barnes
IMBALANCED
TURBULENCE
Meyrand
Squire-1
COLLISIONLESS
RELAXATION
Schekochihin
KAW TURBULENCE
Zhou

WEEK 2

Monday 1 August
Tuesday 2 August
Wednesday 3 Aug
Thursday 4 Aug
Friday 5 Aug
9:30 Coffee
9:45 Welcome/self-intros
9:30 Coffee 9:30 Coffee 9:30 Coffee 9:30 Coffee
EM/ETG TURBULENCE
Adkins
QLT
Fouvry-2
Besse
TH. CONDUCTION
Kempf
Yerger
DRIFT KINETICS
Ivanov
EM TURBULENCE
Hardman-2
CONCLUSION
Summary discussion
(Rincon)
Lunch/work/play Lunch/work/play Lunch/work/play Lunch/work/play Lunch/work/play

15:30 Guest seminar: Rampf 15:30 RIVER CRUISE
16:00 Coffee 16:00 Coffee
16:00 Coffee
COLLISIONLESS
RELAXATION
Zhdankin
Ewart-2
MTMs
Chandran
Hardman-1

QLT
Catto
KINETICS to MHD
Uzdensky

JPP-CUP Best Student Talk Prizes (panel: Cowley, Fouvry, Squire):
Toby Adkins (Oxford)
Stephen Majeski (Princeton)

     

  



Logistics

The workshop will be held at
Wolfgang Pauli Institute, Faculty of Mathematics, University of Vienna,
Oskar-Morgenstern-Platz 1, 1090 Vienna, Austria
All seminars are in Seminar Room 08.135 (8th floor)

Hotels: Bombolo (very close by; used to be the Deutchmeister and perfectly adequate), Pension Ani-Falstaff (non-nonsense super-affordable student option),
Harmonie (somewhat self-indulgent, comes at a noticeable additional expense to you)
Please contact Ms Inma Foulquie Mauser (inma.foulquiemauser at  univie dot  ac dot  at) to arrange accommodation

City-airport train
Vienna information
COFFEE

Previous WPI workshops in this series:
2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, (2008), (2007), (2007)

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