OXFORD PLASMA THEORY GROUP

PLASMA SEMINARS AND GROUP MEETINGS

The style of the seminars will be informal/chaotic/interactive, following the established tradition. The format of the presentations can be a tutorial on a topic of interest, a report on just completed/ongoing/just starting/potentially interesting research projects, a literature review, a lecture by a passing visitor or anything else worthwhile that anyone cares to suggest. The speakers will be interrupted freely and asked to defend themselves. For background reading, only the most relevant or the most recent references are posted; please follow the paper trail from there. The schedule is subject to change on short notice, but what you see posted here is always up to date; the seminars are also announced via the department's seminar server (group meetings are not). Please email Alex Schekochihin if you would like to receive email updates on these seminars. "Plasma group meetings" will discuss current affairs (ongoing projects, new litearture etc.) as well as feature some presentations that are even more informal than seminars. They are open to all members of the Oxford Plasma Theory Group. While some expected contributions are pre-announced, everything is TBC and people wishing their work to be discussed can volunteer contributions without prior notice. Unlike for the seminars, there will not be full-spam-list email reminders of the group meetings. The seminars and group meetings are organised by Michael Barnes, Felix Parra and Alex Schekochihin, please contact them with any queries or if you wish to present something.

Past seminar database:
Autumn 2007; Winter-Spring 2008; Summer 2008; Autumn 2008; HT 2009; TT 2009; Summer 2009; MT 2009; HT 2009; TT 2010; Summer 2010; MT 2010; HT 2011; TT 2011; Summer 2011; MT 2011; HT 2012; TT 2012; Summer 2012; MT 2012; HT 2013; TT & Summer 2013; MT 2013; HT 2014; TT & Summer 2014; MT 2014; HT 2015; TT & Summer 2015; MT 2015; HT 2016; TT & Summer 2016; Autumn/MT 2016; HT 2017; TT & Summer 2017; Autumn/MT 2017; HT 2018; TT & Summer 2018;

  Michaelmas Term of 2018

The seminars/group meetings will be on Thursday at 11:00 in 501 Denys Wilkinson Building, except where indicated otherwise below.
Note also the ALP Seminars (here is a list of all Physics seminars)

If you know exactly what you are going to do, what is the point of doing it? Pablo Picasso

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
Let me put it differently: suppose we had a reactor... Per Helander
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
I've got a fishbone coming up. Tim Horbury
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
We Hankel all the way in and then Hankel all the way out. Joseph Parker
For the sake of fairness, let me mention that some people have objections to this, none of which are particularly valid. Chris Chen
Yes, Steve, you have always known what we have only just figured out. Alfred Mallet
It is better to be roughly right than precisely wrong. Maynard Keynes 

This is more or less right. Perhaps less. Alfred Mallet
You go ahead with your argument. I'll think. Steve Cowley
Too simple? At the end of my talk, you will beg for simplicity! Andrey Beresnyak
The point is not the point! Anonymous
This is why I am presenting this here and nowhere else: nothing is solved! Ian Abel
This calculation is not intellectual masturbation: there's no orgasm. Anonymous
There are many big Buts here... I like big Buts. Matt Kunz
Previous studies of this problem have been either unsatisfactory or limited in scope.---What  is the difference between these?---This means either wrong or irrelevant.
Anatoly Spitkovsky, Michael Medvedev and Steve Cowley (in conversation)
I don't give a damn about astrophysics, explain to me what is going on. Anatoly Spitkovsky
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
You can never be too happy with the state of your closure. Amitava Bhattacharjee
For this plot, 1 is 6.--- Weeell, not even. Steve Cowley and Steve Balbus
Это качественное объяснение недостаточно качественное. 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
We are stuck at x=0. Felix Parra
[these quotes are mostly from Oxford plasma seminars and Vienna meetings]

Wk Date
Time
& place
Speaker & Topic
Background reading
Comings and goings
(incl. visitors in town)
-2
Thu
Sept 20
No seminar, Madrid meeting

-1
Thu
Sept 27
11:00
501
DWB
Plasma Group Meeting (organised by ALEX)
Alex Schekochihin --- Thermo-Alfvenic instability in tokamaks?
typed notes
on request
Ivan Calvo
(CIEMAT)

Alessandro Geraldini
leaves for Maryland

0
Thu
Oct 4.
11:00
501
DWB
Plasma Seminar (organised by FELIX)
Ivan Calvo (CIEMAT) --- Some recent advances in the theory and modeling of stellarator neoclassical transport
JPP 84, 905840407 (2018)
arXiv:1803.05691
Ivan Calvo
(CIEMAT)

Toby Adkins,
Javier Maurino-Alperovich,
& David Hosking
start their DPhils
I
Thu
Oct 11
11:00
501
DWB
Plasma Group Meeting (organised by ALEX)
Toby Adkins --- Relaxation and nonlinearity: the phase-space dynamics of Vlasov-kinetic plasmas
MMathPhys
thesis
on request
Ivan Calvo
(CIEMAT)
II
Thu
Oct 18
No seminar: MAST-U opening ceremony at Culham at 10:00. Contact Lisa Jones if you want to attend.
Steve Cowley
(Princeton)
III
Thu
Oct 25
11:00
501
DWB
Plasma Seminar (organised by ALEX)
Alex Schekochihin --- Fluidisation of collisionless plasma turbulence
arXiv:1808.04284
IV
Thu
  Nov 1
11:00
501
DWB
Plasma Group Meeting (organised by MICHAEL)
Michael Hardman --- Simulating scale separated ion scales in practice
draft paper/slides
on request

V
Thu
  Nov 8
11:00
501
DWB
Plasma Seminar (organised by FELIX)
Robert MacKay FRS (Warwick) --- Some mathematics about quasi-symmetry

Robert MacKay FRS
(Warwick)
VI
Thu
  Nov 15
11:00
501
DWB
Plasma Seminar (organised by ALEX)
Mitch Begelman (Colorado) --- Kinetic modeling of particle acceleration in relativistic plasmas


Mitch Begelman
(Colorado)
VII
Mon
Nov 19
14:00
D Sciama
LT, DWB
Astrophysics Colloquium:
Mitch Begelman (Colorado) --- Accretion discs, elevated
In addition to driving turbulence that transfers angular momentum and permits accretion disks to accrete, the magnetorotational instability also creates a strong, relatively organized magnetic field parallel to the disk plane.   Under certain conditions, this field can build up to the point where it dominates other forms of pressure in supporting the disk vertically against gravity.   Such "magnetically elevated" disks would have dramatically different properties from standard disks.  I will discuss our current understanding of elevated disks and show that their existence can resolve several longstanding problems in accretion disk theory, applied to such systems as quasars, X-ray binaries and cataclysmic variables.
Mitch Begelman
(Colorado)
Thu
  Nov 22
11:00
501
DWB
Plasma Group Meeting (organised by FELIX)
General discussion/Michael Hardman

VIII
Thu
  Nov 29
11:00
501
DWB
Plasma Group Meeting (organised by FELIX)
Nothing to talk about


9
Thu
  Dec 6
11:00
501
DWB
Plasma Group Meeting (organised by FELIX)
Mantas Abazorius --- Transfer report (Update on collisional presheath)
transfer report
on request

10
Thu
  Dec 13
11:00
501
DWB
Plasma Group Meeting (organised by ALEX)
Alex Schekochihin --- Constraints on ion vs. electron heating by plasma turbulence at low beta
paper draft
on request


Thu
  Dec 20
11:00
501
DWB
Plasma Group Meeting (organised by MICHAEL)
Oliver Beeke --- Transfer report
transfer report
on request


Thu
  Dec 27
No seminar (Merry Xmas!)


Thu Jan 3
No seminar (Happy New Year!)

0
Thu
Jan 10
11:00
501
DWB
Plasma Group Meeting (organised by MICHAEL)
TBA


I
Thu Jan 17
11:00
501
DWB
Plasma Group Meeting (organised by ALEX)
Alex Schekochihin --- Isotropic MHD turbulence revisited: reconnecting dynamo, magnetoelasticity and Alfvenic drag
typed notes
on request

II
Thu
Jan 24
11:00
501
DWB
Plasma Seminar (organised by ALEX)
Jack Hare (Imperial) --- TBA

Jack Hare
(Imperial)
III
Thu
Jan 31
11:00
501
DWB
Plasma Seminar (organised by ALEX)
Matt Kunz (Princeton) --- TBC/TBA

Matt Kunz
(Princeton)
IV
Thu
Feb 7
11:00
501
DWB
Plasma Group Meeting (organised by TBA)
TBA


V
Thu
Feb 14
11:00
501
DWB
Plasma Group Meeting (organised by TBA)
TBA


VI
Thu
Feb 21
11:00
501
DWB
Plasma Seminar (organised by ALEX)
Archie Bott --- TBC 

Roger Blandford
(Stanford)

14:00
D Sciama
LT, DWB
Theoretical Physics Colloquium:
Roger Blandford (Stanford) --- TBA
VII
Thu
Feb 28
11:00
501
DWB
Plasma Group Meeting (organised by FELIX)
Alessandro Geraldini (Maryland) --- TBC/TBA

Roger Blandford
(Stanford)
Alessandro Geraldini
(Maryland)
VIII
Thu Mar 7
11:00
501
DWB
Plasma Group Meeting (organised by MICHAEL)
TBA


I
Thu
May 2
11:00
501
DWB
Plasma Seminar (organised by ALEX)
Ilya Dodin (Princeton) --- TBA

Ilya Dodin
(Princeton)
Thu
May 3
14:00
D Sciama
LT, DWB
Theoretical Physics Colloquium:
Ilya Dodin (Princeton) --- TBA