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URLhttps://doi.org/10.18429/JACoW-IBIC2025-MOPMO32
TitleCharacterization of the radiation environment in the FCC-ee tunnel
Authors
  • A. Frasca
    European Organization for Nuclear Research, University of Liverpool
  • G. Broggi, R. Bruce, B. Humann, A. Lechner, G. Lerner
    European Organization for Nuclear Research
  • M. Boscolo, A. Ciarma
    Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
  • C. Welsch, N. Kumar
    University of Liverpool, Cockcroft Institute
AbstractThe Future Circular $ \mathrm{e}^+ \mathrm{e}^- $ Collider (FCC-ee) at CERN will provide collisions at four interaction points along a 91 km long ring, with beam energies ranging from 45.6 GeV (Z pole) to 182.5 GeV ($\text{t}\bar{\text{t}}$ threshold). The radiation environment along the accelerator varies significantly, with different dominant sources depending on location and operational mode. Accurate characterization of this environment is essential for the design and placement of machine equipment, particularly electronic systems and beam instrumentation. In this study, the Monte Carlo code FLUKA is used to characterize tunnel radiation levels from the main sources, including radiative Bhabha scattering, synchrotron radiation, and beam-gas interactions. The results at the Z pole and $\text{t}\bar{\text{t}}$ threshold for both the interaction regions and arcs are presented to guide early-stage design considerations and to quantify exposure risks for electronics at potential installation locations.
Paperdownload: MOPMO32.pdf
CiteBibTeX, LaTeX, Text/Word, RIS, EndNote
Conference14th International Beam Instrumentation Conference
Series
LocationLiverpool, UK
Date07-11 Sep 2025
PublisherJACoW Publishing, Geneva, Switzerland
Editorial BoardNarender Kumar (Editor-in-Chief) - UoL/CI, UK Robert Apsimon - CI, UK Thankonwat Chanwattana - SLRI, Thailand Zhichu Chen - SARI, China Eunhoon Im - IBS, Korea Jangwon Kwon - IBS, Korea Milaan Patel - UoL/CI, UK Volker RW Schaa - GSI, Germany Jana Thomson -TRIUMF, Canada Bradley Wilson, STFC, UK Hao Zhang, UoL/CI, UK
Online ISBN978-3-95450-262-2
Online ISSN2673-5350
Received03 September 2025
Revised05 September 2025
Accepted06 September 2025
Issued20 January 2026
DOI10.18429/JACoW-IBIC2025-MOPMO32
Pages256-259