Last modified
November 29, 2000

  Seminar Abstract
Center for Data Intensive Computing



Tracking in Circulator Accelerators with Parallel Computing

PIC tracking of a particle beam in an accelerator can be done using a "herd" of representative macroparticles randomly generated. Particles are propagated through the accelerator lattice using transfer maps, consisting of matrices in the six dimensional phase space, and higher order transformations. For high intensity beams, the interactions inside the beam and between macroparticles and accelerator chamber walls become important and in some cases are the dominating effects, leading to the formation of halo. Computing can be very demanding and time consuming. Another case involving intensive computing is tracking in an accelerator while the optical properties of the machine itself are being varied. In both cases parallel computing is the best practical approach. We present results of parallel simulation for three problems: (1) comparison of Poisson solvers, (2) tracking with the code ORBIT of an intense proton beam in the Oak Ridge Spallation Neutron Source 1 GeV proton accumulator ring, and (3) orbit and spin tracking with the code SPINK of the polarized proton beams in the Brookhaven RHIC collider.

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