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Future Circular Collider Feasibility Study Report: Volume 2, Accelerators, Technical Infrastructure and Safety
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arxiv 2505.00274 v1 pith:6OEWNHUS submitted 2025-04-25 physics.acc-ph hep-exhep-ph
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In response to the 2020 Update of the European Strategy for Particle Physics, the Future Circular Collider (FCC) Feasibility Study was launched as an international collaboration hosted by CERN. This report describes the FCC integrated programme, which consists of two stages: an electron-positron collider (FCC-ee) in the first phase, serving as a high-luminosity Higgs, top, and electroweak factory; followed by a proton-proton collider (FCC-hh) at the energy frontier in the second phase. FCC-ee is designed to operate at four key centre-of-mass energies: the Z pole, the WW production threshold, the ZH production peak, and the top/anti-top production threshold - delivering the highest possible luminosities to four experiments. Over 15 years of operation, FCC-ee will produce more than 6 trillion Z bosons, 200 million WW pairs, nearly 3 million Higgs bosons, and 2 million top anti-top pairs. Precise energy calibration at the Z pole and WW threshold will be achieved through frequent resonant depolarisation of pilot bunches. The sequence of operation modes remains flexible. FCC-hh will operate at a centre-of-mass energy of approximately 85 TeV - nearly an order of magnitude higher than the LHC - and is designed to deliver 5 to 10 times the integrated luminosity of the HL-LHC. Its mass reach for direct discovery extends to several tens of TeV. In addition to proton-proton collisions, FCC-hh is capable of supporting ion-ion, ion-proton, and lepton-hadron collision modes. This second volume of the Feasibility Study Report presents the complete design of the FCC-ee collider, its operation and staging strategy, the full-energy booster and injector complex, required accelerator technologies, safety concepts, and technical infrastructure. It also includes the design of the FCC-hh hadron collider, development of high-field magnets, hadron injector options, and key technical systems for FCC-hh.
Forward citations
Cited by 9 Pith papers
Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record
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cs.AI 2026-03 unverdicted novelty 6.0 of 10
Merely mentioning MRI availability in the prompt drives 70-80% of apparent multimodal F1 gains in clinical VLMs, even when no imaging is present.
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Configuration and Benchmarking of $\mathrm{e}^+\mathrm{e}^-$ Processes with K4GeneratorsConfig
hep-ph 2025-09 conditional novelty 6.0 of 10
K4GeneratorsConfig automates the configuration and benchmarking of e+e- Monte Carlo generators, showing sub-permil agreement among three generators at LO.
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Recoil-Safe Subtraction, Matching and Merging in e+e- to hadrons
hep-ph 2025-07 conditional novelty 6.0 of 10
The Alaric shower is matched to NLO matrix elements and merged to five jets in e+e- to hadrons, with new analytic subtraction terms validated against Catani-Seymour subtraction.
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Counting b-jets at the FCC-ee as a probe of top-quark flavor physics
hep-ph 2026-07 accept novelty 5.5 of 10
FCC-ee at 240 GeV can probe Λ_eff ∼ 7–13 TeV for scalar, vector and tensor eetu/eetc operators by counting b_P-odd single-b-jet multi-jet events.
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All-charm tetraquarks at hadron colliders: A high-precision fragmentation perspective
hep-ph 2026-04 unverdicted novelty 5.5 of 10
TQ4Q2.0 supplies the first complete, uncertainty-quantified set of NRQCD-based fragmentation functions for all-heavy tetraquarks, including nonconstituent channels and public grids for jet-associated production.
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Laser Synchronisation Over One Hundred Kilometers With Stability at Picosecond Scale
physics.acc-ph 2026-02 conditional novelty 5.0 of 10
A White-Rabbit-based system synchronized a commercial pulsed laser to a reference clock with ~5.5 ps RMS long-term stability over 100 km of fiber.
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BSM: Extended Scalar Sectors
hep-ph 2025-07 unverdicted novelty 1.0 of 10
An updated review chapter on extended scalar sectors, their constraints, dark matter and CP violation links, and future collider searches.
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The vertexing challenge at FCC-ee
hep-ex 2025-02 unverdicted novelty 1.0 of 10
The paper reviews FCC-ee vertex detector requirements, concluding that about 3 micrometer spatial resolution, low material budget, and fast, low-power CMOS pixel sensors are needed, but no existing prototype meets all...
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