1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Radiation load from radiative Bhabha scattering in the FCC-ee experimental insertions

MOPM067
2 Jun 2025, 16:00
2h
Exhibiton Hall A _Magpie (TWTC)

Exhibiton Hall A _Magpie

TWTC

Poster Presentation MC1.A02 Lepton Circular Colliders Monday Poster Session

Speaker

Dr Jerzy Manczak (European Organization for Nuclear Research)

Description

The lepton Future Circular Collider (FCC-ee) at CERN provides electron-positron collisions at four interaction points (IPs) along a 91 km ring, with beam energies spanning from 45.6 GeV (Z pole) to 182.5 GeV (ttbar threshold). The radiation showers produced by these collisions can reach sensitive components of the surrounding machine elements, possibly affecting their performance and lifetime. This contribution examines the case of radiative Bhabha scattering, which generates off-momentum beam particles that can be lost downstream. Some losses occur already at the superconducting final focusing quadrupoles (FFQs), where they can cause quenches and degradation of the coil materials. In this work, the Monte Carlo code FLUKA is used to study the impact of radiative Bhabha in the experimental insertion regions of FCC-ee. The radiation load in the FFQs and the radiation levels in the nearby tunnel and machine elements are simulated for the Z-pole and ttbar operational modes. For the FFQs, a tungsten shielding layer with optimized thickness is proposed to mitigate the radiation load in the magnet coils.

Region represented Europe
Paper preparation format LaTeX

Author

Alessandro Frasca (European Organization for Nuclear Research)

Co-authors

Andrea Ciarma (Istituto Nazionale di Fisica Nucleare) Anton Lechner (European Organization for Nuclear Research) Prof. Carsten Welsch (University of Liverpool) Giuseppe Lerner (European Organization for Nuclear Research) Helmut Burkhardt (European Organization for Nuclear Research) Dr Jerzy Manczak (European Organization for Nuclear Research) Dr Manuela Boscolo (Istituto Nazionale di Fisica Nucleare) Dr Narender Kumar (Cockcroft Institute)

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