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Code of Conduct

NERSC Initiative for Scientific Exploration (NISE) 2010 Awards

Beam Delivery System Optimization of Next Generation X-Ray Light Sources

Ji Qiang, Robert Ryne, and Xiaoye Li, Berkeley Lab

Associated NERSC Project: Frontiers in Accelerator Design: Advanced Modeling for Next-Generation BES Accelerators (m669), Principal Investigator: Robert Ryne

NISE Award: 1,000,000 Hours
Award Date: April 2010

Next generation x-ray light sources provide coherent X-ray beams with unprecedent brightness and intensity. The performance of these light sources depends heavily on the quality of the electron beam coming out of the accelerator beam delivery system. In this study, we will make use the high performance computing power at NERSC to optimize the design of such a beam delivery system. We will explore and implement two-level parallelism in our parallel beam dynamics simulation codes; this will allow us to take advantage of the large number of cores at NERSC for accelerator design through parallel parameter scans and parallel optimization. We will also explore mixing parallel programming paradigm with both MPI and OpenMP to take advantage of the Cray XT multicore architecture. Such a hybrid paradigm will help to improve the parallel performance for the beam dynamics simulation.

The local loop part of IMPACT code (such as external map kicks for all local particles) will be suitable for mixed MPI-OpenMP. That means we do MPI for each node, then we do OpenMP for the 4 cores on each node using 4 threads for local loop.

The research could lower the cost/risk and optimize the performance of electron beams for future high brightness coherent X-ray light sources.

 

Table of Contents

  1. Overview
  2. Modeling the Energy Flow in the Ozone Recombination Reaction
  3. 3-D Radiation/Hydrodynamic Modeling on Parallel Architectures
  4. Dependence of Secondary Islands in Magnetic Reconnection on Dissipation Model
  5. Simulation of elastic properties and deformation behavior of light-weight protection materials under high pressure
  6. Molecular Mechanisms of the Enzymatic Decomposition of Cellulose Microfibrils
  7. Developing an Ocean-Atmosphere Reanalysis for Climate Applications (OARCA) for the period 1850 to present
  8. Surface Input Reanalysis for Climate Applications 1850 - 2011
  9. Pushing the limits of the GW/BSE method for excited-state properties of molecules and nanostructures
  10. Reaction pathways in methanol steam reformation
  11. Warm Dense Matter simulations using the ALE-AMR code
  12. Modeling the dynamics of catalysts with the adaptive kinetic Monte Carlo method
  13. First-Principles Study of the Role of Native Defects in the Kinetics of Hydrogen Storage Materials
  14. ITER rapid shut-down simulation
  15. First-principles Modeling of Charged-Defect-Assisted Loss Mechanisms in Nitride Light Emitters
  16. Thermodynamic, Transport, and Structural Analysis of Geosilicates Using the SIESTA First Principles Molecular Dynamics Software
  17. Computational Prediction of Protein-Protein Interactions
  18. Light propagation in nanophotonics structures designed for high-brightness photocathodes
  19. ILC Damping Ring beam instabilities
  20. Thermonuclear Explosions from White Dwarf Mergers
  21. Beam Delivery System Optimization of Next Generation X-Ray Light Sources
  22. Electron Transport in Presence of Lattice Vibrations for Electronic, Spintronic and Photovoltaic Devices
  23. High Resolution Climate Simulations with CCSM
  24. Abrupt Climate Change and the Atlantic Meridional Overturning Circulation
  25. Modeling plasma surface interactions for materials under extreme environments
  26. Models for the Explosion of Type Ia Supernovae
Last edited: 2024-10-03 19:38:26
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