Beam–beam simulation code BBSIM for particle accelerators

Abstract

A highly efficient, fully parallelized, six-dimensional tracking model for simulating interactions of colliding hadron beams in high energy ring colliders and simulating schemes for mitigating their effects is described. The model uses the weak-strong approximation for calculating the head-on interactions when the test beam has lower intensity than the other beam, a look-up table for the efficient calculation of long-range beam-beam forces, and a self-consistent Poisson solver when both beams have comparable intensities. A performance test of the model in a parallel environment is presented. The code is used to calculate beam emittance and beam loss in the Tevatron at Fermilab and compared with measurements. We also present results from the studies of two schemes proposed to compensate the beam-beam interactions: a) the compensation of long-range interactions in the Relativistic Heavy Ion Collider (RHIC) at Brookhaven and the Large Hadron Collider (LHC) at CERN with a current-carrying wire, b) the use of a low-energy electron beam to compensate the head-on interactions in RHIC.

Accelerator Physics Center at Fermilab : History and Accomplishments (2007-2018)

“…Seminal results were obtain in studies of Integrable non-linear optics (A.Valishev, et al), coherent beam stability (A.Burov, V.Balbekov, K.Y.Ng, et al), Landau damping with electron lenses and space-charge (V.Shiltsev, Yu.Alexahin, et al), beam phase-space manipulations (P.Piot, et al), beam-beam effects (Yu.Alexahin, T.Sen, A.Valishev et al), electron lenses for beam-beam and space-charge compensation and collimation (V.Shiltsev, G.Stancari, et al). See References [4,6,7,8,15,25,29,30,37,46,47,51,54,62,96,98,121,122,132,135,145,157,171,185,194,195] in Appendix E. II.11. Beam physics considerations for far-future colliders: carried out by several APC scientists and covered selected topics of efficient wakefield acceleration, technology and cost challenges of the colliders, channeling acceleration in crystals and carbon nanotubes, etc.…”

SimTrack: A compact c++ code for particle orbit and spin tracking in accelerators

“…Back in 2008, some codes for proton tracking already existed, such as SixTrack [4], BBSIM [5], LIFETRAC [6]. SixTrack is a 6-d element-byelement tracking code with a fast computing speed.…”

SimTrack: A compact c++ library for particle orbit and spin tracking in accelerators

“…Back in 2008, some codes for proton tracking already existed, such as SixTrack [3], BBSIM [4], LIFE-TRAC [5]. SixTrack is a 6-d element-by-element tracking code with a fast computing speed.…”