Scientific Rationale and Main Objectives of the Task
The goal of the IMP12 activity is to provide the ITM-TF with a comprehensive
set of
equilibrium, linear stability, and non-linear MHD modelling tools
as well as the tools for a consistent free boundary equilibrium
evolution
with application to the study of plasma disruptions. The project aims at
providing ITER relevant modelling capabilities covering essential areas in
an MHD simulation chain, starting from equilibrium reconstruction and free
boundary evolution under feedback control via linear and non-linear MHD
stability to non-linear MHD stability and plasma disruptions.
Scope and Long Term Perspective
The mature consolidation of a substantial part of the tools developped by
IMP1 (equilibrium reconstruction and linear MHD stability) prompts for
continued maintenance and integration.
Because of the synergy between equilibrium/linear stability and non-linear
MHD modelling integration, IMP1 and IMP2 have been merged as off 2010.
Adopting a unifying strategy, the project therefore now consolidates the
coverage of essential MHD numerical tools.
Validation of the
full chain of
equilibrium reconstruction and
linear stability
codes has started in 2009 and
will proceed in collaboration with the MHD Topical Group, addressing
relevant experimental scenarios (disruptive limits, edge stability limits,...).
Collaborations with additional experiments is planned.
Extension of the equilibrium and linear stability codes as well as the
data structures to include
plasma flow and
3D effects
will consolidate
the scope of the present tools.
Validation of the existing modules for modelling of a
free boundary
equilibrium on experiments and
integration with the ETS
, mediated by
feedback control schemes, will enhance the whole device
modelling
capabilities of ITM tools.
Interfacing with
non-linear stability modules dedicated to
sawtooth, NTM,
ELMs, error fields, and
beta limit pertinent modules,
such as the
RWM will
be facilitated.
Alongside such efforts, both
2D and 3D MHD non-linear stability modules
will
be integrated in the platform, with privileged application to further
development for
VDE/disruption
capability, including work towards a
"real time" disruption predictor for ideal MHD limits.