| Paper |
Title |
Page |
| MOPP049 |
Collective Effects in the CLIC Damping Rings
|
658 |
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- G. Rumolo, J. B. Jeanneret, Y. Papaphilippou, D. Quatraro
CERN, Geneva
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The possible performance limitations coming from collective effects in the CLIC damping rings are the subject of this paper. In particular, the consequences of space charge, due to the very high beam brilliance, and of the resistive wall impedance, due to the locally very small beam pipe, are considered potentially dangerous in spite of the high beam energy. Hence, they have been studied in detail with the HEADTAIL code, which has been modified in order to take into account a finer lattice structure as well as multi-bunch effects of the resistive wall wake field. The study aims at setting the intensity thresholds determined by these phenomena.
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| THPC017 |
Optimisation of a Beam Transfer FODO Line
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3014 |
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- J. B. Jeanneret, H.-H. Braun
CERN, Geneva
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With in view the design of the CLIC long transfer lines, we developed a formal approach for the optimisation of a straight FODO line. Optimum phase advance and cell length depending on beam parameters are derived for power consumption, overall cost and sensitivity to quadrupole misalignment.
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| THPC018 |
Beam Dynamics Issues in the CLIC Long Transfer Line
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3017 |
| |
- J. B. Jeanneret, E. Adli, A. Latina, G. Rumolo, D. Schulte, R. Tomas
CERN, Geneva
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Both the main beam and the drive beam of the CLIC project must be transported from the central production site to the head of the main linacs over more than twenty kilometres. Over such distances chromatic aberrations are substantial. With long distances and large beam currents, detuning and instabilities associated to ion production and multi-bunch resistive wall effects must also be considered. These effects are quantified and simulated. Based on these results, we propose a baseline design for these two lines.
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