Speaker
Description
In a high-energy lepton collider such as the Future Circular Collider (FCC-ee) at CERN, several phenomena create a challenging radiation environment for accelerator components and equipment including cables and electronics. This paper examines synchrotron radiation (SR), dominating at the highest beam energies (ttbar) for two different optics schemes.
Recent developments in the design of photon stoppers and dedicated radiation shielding are presented, highlighting progress towards a more realistic configuration while maintaining acceptable annual ionizing dose levels. The study covers the contribution of the collider ring and the impact on the attached alcoves, housing radiation sensitive equipment. The absorbed power in accelerator components and the surrounding tunnel environment is evaluated for various operation modes to ensure compliance with the thermal load limits of the ventilation system. Furthermore, radiation and particle fluence levels dominated by photo-neutron production are quantified for the electronics bunkers located below the beamline. These results are used to assess the feasibility of employing radiation-tolerant, commercial-off-the-shelf electronics in these areas.
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