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ComPASS and SciDAC-2
Recent ComPASS Publications 

 

 

  
  
  
Description
  
  
CPA_SC08_Presentation_110708.pdf
  
The presentation that will play at the Computational Physics for Accelerators display within the Fermilab booth at Supercomputing 2008

11/10/2008 12:00 AMEric G Stern
Extracting Degenerate Modes and Frequencies from Time Domain Simulations.aspxExtracting Degenerate Modes and Frequencies from Time Domain Simulations
  
Method for showing how frequencies can be efficiently computed from time-domain computations. G. R. Werner and J. R. Cary, “Extracting Degenerate Modes and Frequencies from Time Domain Simulations,” J. Comp. Phys., accepted (2008).
2/10/2008 12:00 AMJohn Cary
Fully 3D multiple beam dynamics processes simulation for the Fermilab Tevatron.aspxFully 3D multiple beam dynamics processes simulation for the Fermilab Tevatron
  
A comprehensive simulation of multiple beam dynamics effects for the Tevatron including realistic machine optics, beam-beam effects, multiple bunch intereractions and machine impedance is described. The simulation of individual effects are validated by comparison to measured data where available and analytic calculations. Finally, the simulation results are shown to support running at reduced chromaticity during Tevatron setup which lowers beam losses and improves performance.
3/9/2010 12:00 AMEric G Stern
Fully 3D Multiple Beam Dynamics Processes Simulation for the Tevatron.aspxFully 3D Multiple Beam Dynamics Processes Simulation for the Tevatron
  
We present validation and results from the development of a simulation of the Fermilab Tevatron including multiple beam dynamics effects. The essential features of the simulation include a fully 3D strong-strong beam-beam particle-in-cdll Poisson solver, interactions among multiple independentally tracked bunches and both head-on and long-range beam-beam collisions, coupled linear optics and helical trajectory consistent with beam orbit measurements, chromaticity and resistive wall impedance. We validate individual physical processes against measured data where possible, and analytic calculations elsewhere. Finally, we present simulations of the effects of increasing beam intensity with single and multiple bunches that exhibit observed features of Tevatron operations. Published in PRST AB vol. 13, no 2 024401
7/21/2010 12:00 AMEric G Stern
GPU_talk_updated_performance.pdfGPU Accelerated Accelerator Modeling and Simulation
  
Synergia performance is enhanced by implementing GPU specific algorithms.

5/11/2012 12:00 AMEric G Stern
Laser driven coherent betatron oscillation in a laser-wakefield cavity.aspxLaser driven coherent betatron oscillation in a laser-wakefield cavity
  
Computation showing the origin of the disparity of polarization aligned and nonaligned emittance. Karoly Nemeth, Baifei Shen, Yuelin Li, Robert Crowell, Katherine C. Harkay, and John R. Cary, “Laser driven coherent betatron oscillation in a laser-wakefield cavity,” Phys. Rev. Lett. accepted (2008).
2/10/2008 12:00 AMJohn Cary
Luoxiaojuan-imr.pdfMoving Curved Mesh Adaptation for Higher Order Finite Element Simulations
  
A paper to be pulished in he Journal of Engineering with Computers by Xiao-Juan Luo, Mark S. Shephard of RPI and Lie-Quan Lee, Lixin Ge, Cho Ng of SLAC.

4/11/2009 12:00 AMPanagiotis Spentzouris
Shape determination for deformed electromagnetic cavities.aspxShape determination for deformed electromagnetic cavities
  
An article published in Journal of Computational Physics, 227 (3), Pages 1722-1738, 2008 by Volkan Akçelik, Kwok Ko, Lie-Quan Lee, Zenghai Li, Cho-Kuen Ng, and Liling Xiao of SLAC.
4/11/2009 12:00 AMKingyuen B Ng
The_Tevatron-110408-SLOW.movTevatron Beam-Beam Animation
  
A short animation describing a the beam-beam simulation at the Tevatron
11/10/2008 12:00 AMEric G Stern