Fusion Energy Sciences Greenbook Presentation. prepared by: Carl Sovinec (U-WI), Alex Friedman (LLNL&LBNL), Stephane Ethier (PPPL), and Chuang Ren (UCLA). National Energy Research Scientific Computing Center User Group Meeting, June 25, 2004. OUTLINE. Fusion sciences overview
Carl Sovinec (U-WI), Alex Friedman (LLNL&LBNL),
Stephane Ethier (PPPL), and Chuang Ren (UCLA)
National Energy Research Scientific Computing Center User Group Meeting, June 25, 2004
International Thermonuclear Experimental Reactor
National Ignition Facility
Particle distribution evolution
In chamberScales for Heavy Ion Beam Physics
out of magnet
log of timescale
This nonlinear simulation of a loss-of-confinement event in discharge #87009 of the GA DIII-D tokamak helped explain how internal MHD activity altered the heat deposition. (NIMROD data courtesy of Scott Kruger, Tech-X Corp.; SCIRUN graphics from Allen Sanderson, U. Utah)
SCIDAC Center for Extended MHD Modeling
Fixed problem-size scaling with SuperLU (left) and NIMROD-native CG solver (right).
The largest GTC run as of 5/03 required 1 billion particles and 125 million
grid points using 1024 processors on the IBM-SP at NERSC.
SCIDAC Plasma Micorturbulence Project
Fixed problem-size scaling for the continuum GYRO code.
Increasing problem-size scaling for the PIC-based GTC code.
AORSA computation results for a multiple-ion-species plasma in the Alcator C-Mod experiment at MIT showing mode conversion from the long-wavelength “fast-wave” to ion cyclotron waves.
SCIDAC Wave-Plasma Interactions Project
3D AORSA computation for the LHD stellarator.
While SCIDAC has already provided a boost to MFE computation, predicting plasma behavior in ITER will require continued hardware and algorithmic gains.
From the SCaLeS Report (www.pnl.gov/scales), Plasma Science Section by S. C. Jardin, PPPL.
Large-scale Computation in IFE computation, predicting plasma behavior in ITER will require continued hardware and algorithmic gains.
HIF: Simulation of space-charge-dominated beams
Intense beams of heavy ions will drive targets for Inertial Fusion Energy & High Energy Density PhysicsThis beam science will benefit from the next NERSC computer - but the machine’s architecture will matter
Prepared by: Alex Friedman, LLNL & LBNL
Heavy Ion Fusion Virtual National Laboratory
NERSC Users Group, LBNL, JUne 25, 2004
Particle-in-cell simulation of injector based on merging 119 intense beamlets
Key question in Heavy Ion Fusion:How do intense ion beams behave as they are accelerated and compressed into a small volume in space and time?
p intense beamletsx
beam ions background ions electrons
Compressed fuel machine architecture, supportive center
plasmaFast Ignition: Separating Compression and Heating
Assessment from CRS: as different types of FES computations expand their physical models and employ more sophisticated algorithms, communication will become a greater burden.