IR challenges and the machine detector interface at FCC-ee

Boscolo, M.; Burkhardt, H.; Oide, K.; Sullivan, M. K.

doi:10.1140/epjp/s13360-021-02031-5

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…Unlike LEP detectors, the forward-backward region, often referred to as the machinedetector interface (MDI) region [23], of a FCC-ee detector is crowded with crossing beam pipes, the quadrupoles and compensating solenoids. It necessitates the integration of the LumiCal into the MDI design which positions the LumiCal at approximately 1 m away from the interaction point.…”

Section: Luminosity Monitoringmentioning

confidence: 99%

“…Accelerator specialists from SLAC have contributed, among others, to the development of the FCC-ee machine detector interface, e.g. [23], to impedance assessments, to the optics design of lepton and hadron colliders, and to the FCC-ee study coordination, while experts at FNAL, Cornell, and the University of New Mexico contribute to essential studies of FCC-ee beam selfpolarization, e.g. [24,8,25].…”

Section: Introductionmentioning

confidence: 99%

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The Future Circular Collider: a Summary for the US 2021 Snowmass Process

Bernardi,

Brost,

Denisov

et al. 2022

Preprint

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In this white paper for the 2021 Snowmass process, we give a description of the proposed Future Circular Collider (FCC) project and its physics program. The paper summarizes and updates the discussion submitted to the European Strategy on Particle Physics. After construction of an ≈ 90 km tunnel, an electronpositron collider based on established technologies allows world-record instantaneous luminosities at center-of-mass energies from the Z resonance through the ZH and WW and up to tt thresholds, enabling a very rich set of fundamental measurements including Higgs couplings determinations at the subpercent level, precision tests of the weak and strong forces, and searches for new particles, including dark matter, both directly and via virtual corrections or mixing. Among other possibilities, the FCC-ee will be able to (i) indirectly discover new particles coupling to the Higgs and/or electroweak bosons up to scales Λ ≈ 7 and 50 TeV, respectively; (ii) perform competitive SUSY tests at the loop level in regions not accessible at the LHC; (iii) study heavy-flavor and tau physics in ultra-rare decays beyond the LHC reach, and (iv) achieve the best potential in direct collider searches for dark matter, sterile neutrinos, and axion-like particles with masses up to ≈ 90 GeV. The tunnel can then be reused for a proton-proton collider, establishing record center-of-mass collision energy, allowing unprecedented reach for direct searches for new particles up to the ≈ 50 TeV scale, and a diverse program of measurements of the Standard Model and Higgs boson, including a precision measurement of the Higgs self-coupling, and conclusively testing weakly-interacting massive particle scenarios of thermal relic dark matter. The FCC-ee and FCC-hh physics and accelerator programs are remarkably synergistic and complementary. The program builds on the stable funding provided by the CERN member states and the existing, long-standing worldwide partnerships built via the LHC, but requires substantial contributions both intellectual and financial from the US and other non-CERN-members to become a reality. 8.3.3 Decays of the tau to three muons and to a muon and a photon . . .

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Section: Luminosity Monitoringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Future Circular Collider: a Summary for the US 2021 Snowmass Process

Bernardi,

Brost,

Denisov

et al. 2022

Preprint

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“…Previously, we optimized the geometry of the FCC IR beam pipe for a minimum geometrical impedance [2][3][4]. We use a numerical code CST [5] for 3D electromagnetic calculations.…”

Section: Introductionmentioning

confidence: 99%

Estimated heat load and proposed cooling system in the FCC-ee interaction region

Novokhatski,

Boscolo,

Fransesini

et al. 2024

J. Phys.: Conf. Ser.

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We discuss the beam power loss related to the heating of the beam pipe walls of the FCC-ee interaction region. We analyse the excitation of trapped modes, which can accumulate electromagnetic energy and determine the locations of these modes. We study the unavoidable resistive-wall wake field, which is responsible for the direct beam pipe walls heating. We show the distribution of the heat load along the central part of the interaction region. We also present the cooling system design and results for temperature distribution in interaction region in the operational mode.

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“…A description of the main challenges of the interaction region and machine detector interface (MDI) design can be found in Ref. [2]. The baseline optics for the FCC-ee double-ring collider is described in Ref.…”

Section: Introductionmentioning

confidence: 99%

Review and outlook of accelerator-related codes and their interplay with the experiments software

et al. 2021

Self Cite

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Powerful flexible computer codes are essential for the design and optimisation of accelerator and experiments. We briefly review what already exists and what is needed in terms of accelerator codes. For the FCC-ee, it will be important to include the effects of beamstrahlung and beam–beam interaction as well as machine imperfections and sources of beam-induced backgrounds relevant for the experiments and consider the possibility of beam polarisation. The experiment software Key4hep, which aims to provide a common software stack for future experiments, is described, and the possibility of extending this concept to machine codes is discussed. We analyse how to interface and connect the accelerator and experiment codes in an efficient and flexible way for optimisation of the FCC-ee interaction region design and discuss the possibility of using shared data formats as an interface.

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IR challenges and the machine detector interface at FCC-ee

Cited by 4 publications

References 12 publications

The Future Circular Collider: a Summary for the US 2021 Snowmass Process

The Future Circular Collider: a Summary for the US 2021 Snowmass Process

Estimated heat load and proposed cooling system in the FCC-ee interaction region

Review and outlook of accelerator-related codes and their interplay with the experiments software

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