2010/09/07 by R. Bruce, Roderik Bruce, M. Blaskiewicz +2 · 22 citations
Physics and Astronomy · #Betatron #Collider #Electron #Hadron #Heavy ion #High-Energy Particle Collisions Research #Ion #Large Hadron Collider #Luminosity #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Relativistic Heavy Ion Collider #Scattering #Super Proton Synchrotron #Tracking (education) #nucl-ex #physics.acc-ph
paper · pdf · doi:10.1103/physrevstab.13.091001
published in Physical Review Special Topics - Accelerators and Beams 13(9) (American Physical Society) · 15 pages, 14 figures
openalex publication_date 2010/09/07 · arxiv created 2010/09/08 · arxiv updated 2014/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have studied the time evolution of the heavy-ion luminosity and bunch intensities in the Relativistic Heavy Ion Collider (RHIC) at BNL, and in the Large Hadron Collider (LHC) at CERN. First, we present measurements from a large number of RHIC stores (from run-7), colliding 100 GeV/nucleon 197Au79+ beams without stochastic cooling. These are compared with two different calculation methods. The first is a simulation based on multiparticle tracking taking into account collisions, intrabeam scattering, radiation damping, and synchrotron and betatron motion. In the second, faster, method, a system of ordinary differential equations with terms describing the corresponding effects on emittances and bunch populations is solved numerically. Results of the tracking method agree very well with the RHIC data. With the faster method, significant discrepancies are found since the losses of particles diffusing out of the rf bucket due to intrabeam scattering are not modeled accurately enough. Finally, we use both methods to make predictions of the time evolution of the future 208Pb82+ beams in the LHC at injection and collision energy. For this machine, the two methods agree well.