| Article | |
| Report number | CERN-ATS-2013-043 |
| Title | Potential of stochastic cooling of heavy ions in the LHC |
| Author(s) | Schaumann, M (CERN) ; Jowett, JM (CERN) ; Blaskiewicz, M (BNL) |
| Publication | 2013 |
| Imprint | 10 Jun 2013 |
| Number of pages | 3 |
| In: | International Workshop on Beam Cooling and Releated Topics, Mürren, Switzerland, 10 - 14 Jun 2013, pp.TUPM1HA02 |
| Subject category | Accelerators and Storage Rings |
| Abstract | The dynamics of the high intensity lead beams in the LHC are strongly influenced by intra-beam scattering (IBS), leading to significant emittance growth and particle losses at all energies. Particle losses during collisions are dominated by nuclear electromagnetic processes and the debunching effect arising from the influence of IBS, resulting in a non-exponential intensity decay during the fill and short luminosity lifetimes. In the LHC heavy ion runs, 3 experiments will be taking data and the average fill duration will be rather short as a consequence of the high burn-off rate. The achievements with stochastic cooling at RHIC suggest that such a system at LHC could substantially reduce the emittance growth and the debunching component during injection and collisions. The luminosity lifetime and fill length could be improved to optimize the use of the limited run time of 4 weeks per year. This paper discusses the first results of a feasibility study to use stochastic cooling on the lead ion beams in the LHC. The present and expected future performance without cooling is presented and compared to preliminary simulations estimating the improvements if stochastic cooling is applied. |
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