PostGraduate School on Computational Astro- and Space Plasma Physics
from
Monday 11 September 2023 (09:00)
to
Friday 15 September 2023 (14:00)
Monday 11 September 2023
09:00
Welcome
-
Maria Elena Innocenti
(
Ruhr University Bochum
)
Welcome
Maria Elena Innocenti
(
Ruhr University Bochum
)
09:00 - 09:15
09:15
Introductory talk: Solar physics and space weather simulations
-
Stefaan Poedts
(
University of Leuven
)
Introductory talk: Solar physics and space weather simulations
Stefaan Poedts
(
University of Leuven
)
09:15 - 10:45
10:45
Coffee
Coffee
10:45 - 11:15
11:15
MHD /1
-
Jürgen Dreher
MHD /1
Jürgen Dreher
11:15 - 12:15
The MHD model of plasmas will be reviewed. Fundamental Finite-Difference schemes and a generic and robust Finite-Volume scheme for time-dependent fluid computations will be discussed.
12:15
Lunch
Lunch
12:15 - 14:00
14:00
MHD/ 2
-
Jürgen Dreher
MHD/ 2
Jürgen Dreher
14:00 - 15:00
The MHD model of plasmas will be reviewed. Fundamental Finite-Difference schemes and a generic and robust Finite-Volume scheme for time-dependent fluid computations will be discussed.
15:00
Fluid/ MHD: Hands on exercises
-
Jürgen Dreher
Rainer Grauer
Fluid/ MHD: Hands on exercises
Jürgen Dreher
Rainer Grauer
15:00 - 17:00
17:30
Icebreaker (in students' room NB 03)
Icebreaker (in students' room NB 03)
17:30 - 19:30
Tuesday 12 September 2023
09:00
Explicit Particle-In-Cell
-
Jérémy Dargent
Explicit Particle-In-Cell
Jérémy Dargent
09:00 - 10:30
In this lecture, we will introduce the Particle-In-Cell method, which consists into the coupling of a kinetic description of the plasma (macroparticles) with the projection on a grid of the fields, and develop the most basic method to implement it, e.g. the explicit description.
10:30
Coffee
Coffee
10:30 - 11:00
11:00
Implicit Particle-In-Cell
-
Maria Elena Innocenti
Implicit Particle-In-Cell
Maria Elena Innocenti
11:00 - 12:15
In this lecture, we will introduce (semi-)implicit Particle-In-Cell methods, where the equations for the temporal update of fields and particles are discretised semi-implicitly. We will discuss how the increased algorithmic burden pays off in terms of relaxed stability constraints.
12:15
Lunch
Lunch
12:15 - 14:00
14:00
PIC: Hands on exercises
-
Jérémy Dargent
Maria Elena Innocenti
PIC: Hands on exercises
Jérémy Dargent
Maria Elena Innocenti
14:00 - 17:00
Wednesday 13 September 2023
09:00
Finite elements and structure preserving Particle-In-Cell
-
Katharina Kormann
(
Ruhr University Bochum
)
Finite elements and structure preserving Particle-In-Cell
Katharina Kormann
(
Ruhr University Bochum
)
09:00 - 10:30
In this lecture, we will introduce the framework of finite element exterior calculus which consists of a special type of finite elements that are adapted to the structure of Maxwell's equations and apply those to derive a structure-preserving particle-in-cell code of high accuracy order.
10:30
Coffee
Coffee
10:30 - 11:00
11:00
Relativistic Particle-In-Cell
-
Kevin Schoeffler
Relativistic Particle-In-Cell
Kevin Schoeffler
11:00 - 12:15
Here we will explore how fully relativistic effects can be taken into account in the Particle-In-Cell method, take a look at several applications where that can take advantage of this such as systems with energetic non-thermal tails or plasmas in extreme conditions, and consider the differences between explicit and implicit implementations.
12:15
Lunch
Lunch
12:15 - 14:00
14:00
Particle In Cell: Hands on exercises
-
Kevin Schoeffler
Alfredo Micera
Particle In Cell: Hands on exercises
Kevin Schoeffler
Alfredo Micera
14:00 - 17:00
18:00
Dinner in Q-West (on-campus restaurant)
Dinner in Q-West (on-campus restaurant)
18:00 - 19:00
Thursday 14 September 2023
09:00
MuPhy: MultiPhysics framework
-
Simon Lautenbach
(
University of Texas at Austin
)
MuPhy: MultiPhysics framework
Simon Lautenbach
(
University of Texas at Austin
)
09:00 - 10:30
Collsionless astrophysical and space plasmas cover regions that typically display a separation of scales that exceeds any code's capabilities.The muphyII code utilizes a hierarchy of models with different inherent scales, unified in an adaptive framework that allows stand-alone use of models as well as a model-based dynamic and adaptive domain decomposition.This requires careful treatment of inner-domain model boundaries for model coupling, and robust time stepping algorithms, especially with the use of electron subcycling.
10:30
Coffee
Coffee
10:30 - 11:00
11:00
Turbulence and cosmic rays
-
Rainer Grauer
Horst Fichtner
Turbulence and cosmic rays
Rainer Grauer
Horst Fichtner
11:00 - 12:15
Cosmic rays are important messengers providing information about various remote astrophysical systems. Therefore, it is of high interest to understand the transport of these high energetic particles in the turbulent plasma environments they traverse. Contemporary models of cosmic ray transport processes will be discussed along with strategies to model the turbulence that is determining the latter.
12:15
Lunch
Lunch
12:15 - 14:00
14:00
Cosmic ray propagation in turbulent fields: Hands on exercises
-
Frederic Effenberger
Jeremiah Lübke
Cosmic ray propagation in turbulent fields: Hands on exercises
Frederic Effenberger
Jeremiah Lübke
14:00 - 15:30
We introduce a full-orbit test particle code that can propagate a large number of energetic particles in synthetic turbulence. Special emphasis is put on the turbulence geometry as either an isotropic or slab-2D composite model. Statistical analysis will be performed to determine the diffusion coefficients for different particle energies.
15:30
MuPhy: Hands on exercises
-
Rainer Grauer
Simon Lautenbach
(
University of Texas at Austin
)
MuPhy: Hands on exercises
Rainer Grauer
Simon Lautenbach
(
University of Texas at Austin
)
15:30 - 17:00
Friday 15 September 2023
09:00
Cosmic rays propagation: CRPropa
-
Sophie Aerdker
Cosmic rays propagation: CRPropa
Sophie Aerdker
09:00 - 10:30
CRPropa is a modular open source cosmic-ray propagation framework. Particle transport can be treated in the single particle picture by solving the equation of motion or in an ensemble averaged approach, solving stochastic differential equations. Together with the implementation of all relevant loss processes and secondary production channels it forms a powerful tool to model cosmic rays and other messengers from GeV up to ZeV energies. In this lecture we will present the underlying concept of the Monte Carlo code and discuss some recent applications of the code to diffusive shock acceleration (DSA) and how it helped to distinguish the transport mode in the face-on galaxy M51. During the exercise you will learn how to set up and run different simulation from cosmogenic neutrino production to particle acceleration.
10:30
Coffee
Coffee
10:30 - 11:00
11:00
CRPropa: Hands on exercises
-
Sophie Aerdker
Julien Dörner
CRPropa: Hands on exercises
Sophie Aerdker
Julien Dörner
11:00 - 12:15
12:15
Good bye lunch
Good bye lunch
12:15 - 14:00