https://doi.org/10.1140/epjp/s13360-021-02031-5
Regular Article
IR challenges and the machine detector interface at FCC-ee
1
INFN, Frascati, Italy
2
CERN, Meyrin, Switzerland
3
KEK, Tsukuba, Japan
4
SLAC, Menlo Park, USA
Received:
16
April
2021
Accepted:
3
October
2021
Published online:
25
October
2021
The FCC-ee, with its unprecedented luminosity goal and high energy reach, creates challenges and requires solutions to many issues in order to produce a realistic design for the complex machine detector interface. The interaction region design for the FCC-ee adopts the crab-waist collision scheme and proposes an elegant local chromaticity correction system. An asymmetric layout of nearby dipoles suppresses the critical energy of synchrotron radiation incoming to the detector at the interaction point to a maximum value of 100 keV. The main challenge of the FCC-ee machine detector interface design is to combine the many conflicting accelerator and 2 T detector constraints, aiming for the optimal trade-off choices that simultaneously allow for a best machine performance in terms of integrated luminosity and data taking efficiency. Much of the success of the FCC-ee will be related to the interaction region design, as a result of the ingredients coming from areas of accelerator physics, mechanical engineering and detector optimization.
The original online version of this article was revised to add additional funding information.
M. K. Sullivan: This material is based on work supported by the US Department of Energy, Office of Science, under Contract No. DE-AC02-76SF-00515.
This work was partially supported by the EC HORIZON 2020 project FCC-IS, Grant agreement n.951754.
A correction to this article is available online at https://doi.org/10.1140/epjp/s13360-022-02959-2.
Copyright comment corrected publication 2022
© The Author(s) 2021. corrected publication 2022
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