Speaker
Description
The betatron and momentum collimation system of the the Future Circular Collider (FCC-ee) is essential to isolate losses away from the experiments and other machine elements, thus reducing the radiation background in the experiments, and avoiding damage to the machine in case of accidental beam losses. The primary and secondary collimators of the collimation hierarchy, employed to scatter halo particles from the beam and remove them, respectively, will be accommodated in one of the technical insertions of the collider ring (Point F). In this paper, FLUKA simulations are presented for the collimation straight section, addressing both normal operation and accidental scenarios. The power deposition is determined for all elements in the section following beam impacts on the collimator jaws, including other collimators as well as dipole and quadrupole magnets. In particular, the fraction of the stored beam which can be safely absorbed by the collimators is estimated. Finally, the paper discusses the radiation levels in the Point F tunnel resulting from beam losses on the collimation system, and the resulting radiation hardness requirements for machine equipment and infrastructure.
Funding Agency
CERN
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