A Typical "Ztrack" Long-Term Tracking Result for the SSC Aperture Study

A large amount of supercomputer CPU time has been used for tracking particles in the Superconducting Super Collider (SSC) using a vectorized, multi-tasked post-Teapot tracking program called "Ztrack.'' Typically, hundreds of particles with appropriate initial displacements (relative to the closed orbits) are tracked for a hundred thousand turns. One then simply makes a survival plot (turn at which particle is lost versus initial displacements) to determine the dynamic aperture. Occasionally, particles are tracked to a million turns for very selective cases. These numerical studies aid in determining the best aperture for the SSC.. Authors: Yan, Yiton [Superconducting Super Collider Lab., Dallas, TX (United States)]; Bourianoff, George [Superconducting Super Collider Lab., Dallas, TX (United States)]; Schachinger, Lindsay [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)]. DOE Contract: AC02-89ER40486; AC03-76SF00098. Subjects: 43 PARTICLE ACCELERATORS; 430200* -- Particle Accelerators-- Beam Dynamics, Field Calculations, & Ion Optics; 97 MATHEMATICS AND COMPUTING; 990200 -- Mathematics & Computers; APERTURES; BEAM DYNAMICS; Beam Dynamics, Field Calculations, & Ion Optics; BEAM MONITORING; BEAM OPTICS; BEAM POSITION; COMPUTER ARCHITECTURE; COMPUTER CODES; MONITORING; OPENINGS; STORAGE RINGS; SUPERCONDUCTING SUPER COLLIDER; Z CODES