# Future Circular Collider Documents

2018-07-16
18:42
 Hit multiplicity approach to b-tagging in FCC-hh / Perez Codina, Estel (CERN) ; Roloff, Philipp Gerhard (CERN) The FCC-hh project aims to study proton-proton collisions at $\sqrt{s}$=100 TeV. The ability to tag heavy flavour jets of high energy produced in those collisions will be crucial for many beyond the Standard Model searches such as Z' production. [...] CERN-ACC-2018-0023.- Geneva : CERN, 2018 Fulltext: PDF;

2018-06-21
11:40
 Material options for the superconducting rf system of the Future Circular Collider / Aull, Sarah ; Brunner, Olivier (CERN) ; Butterworth, Andy (CERN) ; Schwerg, Nikolai The design of the superconducting RF (SRF) systems of the Future Circular Collider (FCC) machine variants requires a thorough comparison of the different options for cavity material, oper- ating temperature and frequency. We collected representative SRF performance data at different frequencies and temperatures of bulk niobium as the standard technology and of niobium thin films as a potential alternative and develop a perspective for future performance for all material- frequency-temperature combinations as function of accelerating gradient. [...] CERN-ACC-2018-0019.- Geneva : CERN, 2018 Fulltext: PDF;

2018-06-15
13:27
 Arc cell options for the HE-LHC / Keintzel, Jacqueline (Vienna University of Technology (AT)) The optics design of the High Energy Large Hadron Collider (HE-LHC), which aims to reach approximately twice the centre of mass energy of the Large Hadron Collider (LHC), in an already existing tunnel is challenging which leads to a trade off between energy reach, aperture and survey offset. Different arc cell options have been stud- ied to ﬁnd the best arc design of the HE-LHC, where constraints like inter-element distances and tunnel geometry need to be considered as well as the reachable center of mass energy. [...] CERN-ACC-2018-0020.- Geneva : CERN, 2018 Fulltext: PDF;

2018-05-29
09:03
 EuroCirCol - Horizon 2020 Research and Innovation Action / Gutleber, Johannes (CERN) ; Benedikt, Michael (CERN) ; Zimmermann, Frank (CERN) ; Schulte, Daniel (CERN) ; Tommasini, Davide (CERN) ; Seryi, Andrei (University of Oxford (GB)) ; Perez, Francis (ALBA CELLS) EuroCirCol is a conceptual design study for a post-LHC research infrastructure based on an energy-frontier 100 TeV circular hadron collider. ​The award of the 2013 Nobel Prize for Physics acknowledged the leading role of Europe in particle physics, which has a global community of over 10'000 scientists. [...] CERN-ACC-2018-0017.- Geneva : CERN, 2015 Fulltext: PDF;

2018-05-23
10:57
 Specifications for conductors and proposed conductor configurations: Milestone M5.3 / Bordini, Bernardo (CERN) ; Senatore, Carmine ; Dhallé, Marc (University of Twente) This document summarises the specifications of a superconductor suitable to be used in a particle accelerator dipole magnet that can reach a field of 16 Tesla during regular operation. The document reports also on the conductor configuration. [...] CERN-ACC-2018-0015.- Geneva : CERN, 2018 Fulltext: PDF;

2018-05-22
16:30
 Social Cost Benefit Analysis of HL-LHC / Bastianin, Andrea (Università degli Studi e INFN Milano (IT)) ; Florio, Massimo (Università degli Studi e INFN Milano (IT)) We present a Social Cost–Benefit Analysis (CBA) of the High Luminosity upgrade of the Large Hadron Collider (HL-LHC), assessing its economic costs and benefits up to 2038. The Net Present Value (NPV) of the HL-LHC project is positive at the end of the observation period. [...] CERN-ACC-2018-0014.- Geneva : CERN, 2018 Fulltext: FCC-1805221620-ABA_OverviewCBA_HLLHCandFCC - XLSX; FCC-1805221620-ABA_OverviewCBA_HLLHCandFCC_2 - XLSX; CERN-ACC-2018-0014 - PDF;

2018-05-09
14:50
 Considerations on operation schedule and maintenance aspects of FCC-hh / Niemi, Arto (CERN) ; Apollonio, Andrea (CERN) ; Foraz, Katy (CERN) The Future Circular Hadron Collider (FCC-hh) has ambitious goals for integrated luminosity production. Reaching these goals requires reducing the time for planned technical stops and commissioning, compared to the LHC. [...] CERN-ACC-2018-0013.- Geneva : CERN, 2018 Fulltext: PDF;

2018-04-27
19:06
 Arc key component functional design specifications for preliminary baseline: Milestone M2.3 / Chance, Antoine Report on the list of key accelerator elements for the accelerator arc and their functional design properties, based on the existing preliminary arc design baseline. The report indicates also the foreseen quantities so to permit coming to an accelerator overall cost estimate.. CERN-ACC-2018-0021.- Geneva : CERN, 2018 Fulltext: PDF;

2018-04-03
11:54
 FUTURE CIRCULAR COLLIDER LOGISTICS STUDY / Beißert, Ulrike (IML) ; Horstmann, Konstantin (IML) ; Kuhlmann, Gerd (IML) ; Nettsträter, Andreas (IML) ; Prasse, Christian (IML) ; Wohlfahrt, Andreas (IML) The Large Hadron Collider (LHC) at the European Organization for Nuclear Research CERN in Geneva is the largest and most powerful collider in the world. CERN and its research and experimental infrastructure is not only a focus for the science community but is also very much in the public eye [...] CERN-ACC-2018-0012.- Geneva : CERN, 2018 Access to fulltext document: DOCX;

2018-02-27
17:02
 GPU-Powered Modelling of Nonlinear Effects due to Head-On Beam-Beam Interactions in High-Energy Hadron Colliders. / Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH)) The performance of high-energy circular hadron colliders, as the Large Hadron Collider, is limited by beam-beam interactions. The strongly nonlinear force between the two opposing beams causes diverging Hamiltonians and resonances, which can lead to a reduction of the lifetime of the beams. [...] CERN-ACC-2018-0008.- Geneva : CERN, 2017 Fulltext: PDF;

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