1. Development and application of integrated transport code 　　　　　　　　　　to LHD plasmas
M.Yokoyama (National Institute for Fusion Science)
for TASK3D collaborators

2. TASK3D Objectives
Extension of integrated code (TASK) applicability to general toroidal plasmas (stellarator-heliotron plasmas)
S-H specific physics
3D feature
Module extension/modification based on TASK
LHD experiment :
integrated analysis
prediction, operation scenario
validation

3. Module Extension/modification
Stellarator-Heliotron specific physics
　　 Neoclassical (NC) diffusion (3D configuration, Er)
　　 Er determined by NC ambipolar condition
NBI deposition including re-entering effects
Impact of pressure driven MHD instability on pressure profile
3D feature
3D equilibrium
Evolution of rotational transform instead of
the current evolution (easier to include 3D effects)
Heating modules incorporating 3D equilibrium
DGN/LHD ER
MORH
MSSH
VMEC
HINT2
NEWBOZ EI
FIT3D WM
LHDGauss

4. TASKTASK3D: module extension/modificationEQ TR TX FP WR WM DP
Fixed-boundary equilibrium
Diffusive transport
Dynamic transport
Kinetic transport
Ray and beam tracing
Full wave analysis (ICH)
Wave dispersion
NBI analysis (Guiding Center)
TASK
FIT3D
Heating in LHD EI ER
DGN/LHD
VMEC
current (iota) evolution
radial electric field
Neoclassical diffusion coefficient DB
3D equilibrium (nested surface)
HINT2
3D equilibrium
(w/o nested surface assumption)
MSSH
MHD instability’s impact on pressure profile
MORH
NBI analysis (Re-entering)
LHDGauss
Ray tracing (ECH)
BOOZER
3D equilibrium in Boozer coordinates
TASK3D
3D Physics
3D Equilibrium

5. Predictive simulation by a part of TASK3D
~ Temperature profile variation for NBI heated plasmas ~
VMEC
3D equilibrium
Boozer
FIT3D
NBI deposition TR
1D diffusion transport equation
Gyro-Bohm
DGN/LHD
NC diffusion coeff. DB ER
radial electric field

6. Predictive simulation by a part of TASK3D
Rax=3.60m , B=-2.75T: equilibrium fixed
5 beam lines applied
Density profile : fixed
n0=2e19
n0=4e19
n0=6e19
Dedicated experiment was conducted in Sep
Anomalous transport modelling, track of configuration change, etc.. towards increased predictability: validation study
-> Operation scenario for high-performance steady-state LHD plasmas

7. Coordinated Working Group Meeting (CWGM)
Helical Plasmas：Diversity  Systemization
Joint experiment/database/analysis/papers
The gateway to “3D” issues