17–22 May 2026
C.I.D
Europe/Zurich timezone

Radiation environment in the FCC-ee arcs caused by synchrotron photon emission

MOP1014
18 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC1.A02: Lepton Circular Colliders Poster session

Speaker

Kate Taylor (European Organization for Nuclear Research)

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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Authors

Barbara Humann (European Organization for Nuclear Research) Anton Lechner (European Organization for Nuclear Research)

Co-authors

Marton Ady (European Organization for Nuclear Research) Thomas Banks (European Organization for Nuclear Research) Mr Jeremie Bauche (European Organization for Nuclear Research) Jean-Paul Burnet (European Organization for Nuclear Research) Marco Calviani (European Organization for Nuclear Research) Federico Carra (European Organization for Nuclear Research) Mr Richard Cowan (European Organization for Nuclear Research) Alessandro Frasca (European Organization for Nuclear Research) Mr Ruben Garcia Alia (European Organization for Nuclear Research) Klaus Hanke (European Organization for Nuclear Research) Marc Jebramcik (European Organization for Nuclear Research) Mr Giacomo Lavezzari (European Organization for Nuclear Research) Giuseppe Lerner (European Organization for Nuclear Research) Mr Inigo Martin Melero (European Organization for Nuclear Research) Marco Morrone (European Organization for Nuclear Research) Mr Daniel Najdrowski (European Organization for Nuclear Research) Antonio Perillo Marcone (European Organization for Nuclear Research) Audrey Piccini (European Organization for Nuclear Research) Alvaro Romero Francia (European Organization for Nuclear Research) Marc TIMMINS (European Organization for Nuclear Research) Fani Valchkova-Georgieva (CEGELEC SA (Actemium Geneve)) Mr Luke Von Freeden (European Organization for Nuclear Research) Mr Markus Widorski (European Organization for Nuclear Research) Kate Taylor (European Organization for Nuclear Research) David Hajdu (European Organization for Nuclear Research)

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