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| TUIOB01 |
Numerical Investigation of Stochastic Cooling at NICA Collider
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52 |
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- T. Katayama
GSI, Darmstadt
- I. N. Meshkov, G. V. Trubnikov
JINR, Dubna, Moscow Region
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At the heavy ion collider NICA promoted at the Dubna, JINR, the stochastic cooling will play the crucial roles to manipulate the beam. The primary goal is to prevent the IBS diffusion effects to keep the high luminosity during the experimental cycle. The other main purpose is to accumulate the beam intensity up to several times 1·1010 from the injector NUCLOTRON with use of barrier bucket method. With this method, the short bunch formation is not necessary in the injector NUCLOTRON, and is transferred to the collider as a long bunch condition. After the BB accumulation the coasting beam is adiabatically bunched with the help of RF field and the stochastic cooling. In the present paper the detailed simulation results are presented for the above three process (mainly longitudinal freedom) .
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Slides
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| TUIOB02 |
Simulations of Stochastic Cooling of Antiprotons in the Collector Ring CR
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58 |
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- C. Dimopoulou, A. Dolinskii, T. Katayama, F. Nolden, C. Peschke, M. Steck
GSI, Darmstadt
- D. Möhl, L. Thorndahl
CERN, Geneva
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The Collector Ring at FAIR will be equipped with pertinent stochastic cooling systems in order to achieve fast cooling of the hot secondary beams, antiprotons and rare isotopes, thus profiting from the repetition rate of the SIS100 synchrotron. Detailed simulations of the system performance are needed for optimization as well as input for the users of the CR pre-coooled beams, e.g. HESR. We presently focus on the antiproton cooling in the band 1-2 GHz. After a short overview, results from Fokker-Planck simulations with the CERN code of the momentum cooling of antiprotons will be presented. The performance of the betatron cooling of antiprotons, which has to proceed simultaneously with the momentum cooling, was calculated separately by means of an analytical model. First results and their implications will be discussed, including an outlook to future simulation work.
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Slides
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