Title :
Long-term stability studies for the Large Hadron Collider
Author :
Galluccio, F. ; Guo, Z. ; Scandale, W. ; Schmidt, F. ; Verdier, A.
Author_Institution :
CERN, Geneva, Switzerland
Abstract :
In the Large Hadron Collider (LHC) particle stability over about 10 min is required at injection: this corresponds to 7*10/sup 6/ turns in the machine. Tracking simulations up to such a high number of turns for a significant number of different cases is impractical, if not impossible, even with the most powerful computer. Therefore, a different approach must be used to evaluate the LHC long-term dynamic aperture. The most realistic machine has been modeled, including RF cavities, residual closed-orbit distortion after compensation, systematic and random multipolar errors in dipoles and quadrupoles, skew quadrupoles, and lumped multipolar correctors. The results of this study and the estimated value of the long-term dynamic aperture of the LHC at injection are given.<>
Keywords :
particle beam diagnostics; proton accelerators; storage rings; synchrotrons; LHC; Large Hadron Collider; RF cavities; injection; long term stability; long-term dynamic aperture; lumped multipolar correctors; multipolar errors; particle stability; residual closed-orbit distortion; skew quadrupoles; Apertures; Cleaning; Computational modeling; Computer simulation; Large Hadron Collider; Particle tracking; Power system modeling; Radio frequency; Stability; Superconducting magnets;
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.1991.164739
