Title :
Computer simulation of the coherent beam-beam effect in the LHC
Author_Institution :
CERN, Geneva, Switzerland
Abstract :
For the Large Hadron Collider (LHC) in the Large Electron-Positron Colliding Beam Accelerator (LEP) tunnel, a nonzero crossing angle is foreseen to avoid multiple collisions outside the interaction point. The coherent dipole oscillations induced by long-range beam-beam interactions for the LHC have been investigated. The two beams can suffer from long range beam-beam interactions during the time they are in one common vacuum chamber. These long range interactions can excite coherent beam-beam modes, and, due to the finite separation, they are in general nonlinear, leading to possible coherent resonances of a higher order. A computer simulation has been developed and was used to investigate this coherent beam-beam effect. Possible constraints on the LHC parameters are investigated and discussed.<>
Keywords :
beam handling techniques; physics computing; proton accelerators; synchrotrons; Colliding Beam Accelerator; LEP; LHC; Large Electron-Positron; Large Hadron Collider; coherent beam-beam effect; coherent dipole oscillations; coherent resonances; computer simulation; finite separation; interaction point; long-range beam-beam interactions; multiple collisions; nonzero crossing angle; vacuum chamber; Computational modeling; Computer simulation; Frequency; Geometry; Large Hadron Collider; Orbital calculations; Resonance; Solid modeling; Stability;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164538
