CERN Accelerating science

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1.
Futur collisionneur circulaire—Rapport d’étude de faisabilité, volume 3 : Génie civil, implantation et durabilité / Benedikt, M. (CERN) ; Zimmermann, F. (CERN) ; Auchmann, B. (CERN ; PSI, Villigen) ; Bartmann, W. (CERN) ; Burnet, J.P. (CERN) ; Carli, C. (CERN) ; Chancé, A. (IRFU, Saclay) ; Craievich, P. (PSI, Villigen) ; Giovannozzi, M. (CERN) ; Grojean, C. (DESY ; Humboldt U., Berlin) et al.
CERN-FCC-ACC-2025-0003-FR.- Geneva : CERN, 2025-03 - 357 p. - Published in : 10.17181/CERN.WE26.NJC0
2.
High Field Magnet Programme -- European Strategy Input / Alfonso, L. (INFN, Parma) ; Ambrosio, G. (Fermilab) ; Araujo, D. (PSI, Villigen) ; Arpaia, P. (INFN, Parma) ; Auchmann, B. (PSI, Villigen ; CERN) ; Axensalva, J. (CERN) ; Balconi, L. (INFN, Milan ; Milan U. ; INFN, Parma) ; Ballarino, A. (CERN) ; Barzi, E. (Ohio State U. ; Unlisted) ; Baskys, A. (CERN) et al.
In this submission, we describe research goals, implementation, and timelines of the High Field Magnet Programme, hosted by CERN. [...]
FERMILAB-PUB-25-0283-TD ; arXiv:2504.16885.
- 15.
Fermilab Library Server - Fulltext - Fulltext
3.
Future Circular Collider Feasibility Study Report Volume 2 : Accelerators, technical infrastructure and safety / Benedikt, M. (ed.) (CERN) ; Zimmermann, F. (CERN) ; Auchmann, B. (CERN ; PSI, Villigen) ; Bartmann, W. (CERN) ; Burnet, J.P. (CERN) ; Carli, C. (CERN) ; Chancé, A. (IRFU, Saclay) ; Craievich, P. (PSI, Villigen) ; Giovannozzi, M. (CERN) ; Grojean, C. (DESY ; Humboldt U., Berlin) et al.
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. The FCC ‘integrated programme’, described in this report, in a first stage consists of a highest-luminosity electron-positron collider, FCC-ee, serving as Higgs, top and electroweak factory, with a subsequent energy-frontier proton-proton collider, FCC-hh, as the second stage.     The FCC-ee is designed to operate at four baseline centre-of-mass energies, corresponding to the Z pole, the WW pair production threshold, the ZH production peak, and the top/anti-top production threshold, always delivering the highest possible luminosities to four experiments. [...]
arXiv:2505.00274; CERN-FCC-ACC-2025-0004.- Geneva : CERN, 2025 - 627 p. Fulltext: CERN-FCC-ACC-2025-0004 - PDF; 2505.00274 - PDF;
4.
Future Circular Collider Feasibility Study Report Volume 3 : Civil Engineering, Implementation and Sustainability / Benedikt, M. (CERN) ; Zimmermann, F. (CERN) ; Auchmann, B. (CERN ; PSI, Villigen) ; Bartmann, W. (CERN) ; Burnet, J.P. (CERN) ; Carli, C. (CERN) ; Chancé, A. (IRFU, Saclay) ; Craievich, P. (PSI, Villigen) ; Giovannozzi, M. (CERN) ; Grojean, C. (DESY ; Humboldt U., Berlin) et al.
Volume 3 of the FCC Feasibility Report presents studies related to civil engineering, the development of a project implementation scenario, and environmental and sustainability aspects. The report details the iterative improvements made to the civil engineering concepts since 2018, taking into account subsurface conditions, accelerator and experiment requirements, and territorial considerations. [...]
arXiv:2505.00273; CERN-FCC-ACC-2025-0003.- Geneva : CERN, 2025-03 - 357 p. - Published in : 10.17181/CERN.I26X.V4VF Fulltext: CERN-FCC-ACC-2025-0003 - PDF; 2505.00273 - PDF;
5.
Future Circular Collider Feasibility Study Report Volume 1 : Physics and Experiments / Benedikt, M. (CERN) ; Zimmermann, F. (CERN) ; Auchmann, B. (CERN ; PSI, Villigen) ; Bartmann, W. (CERN) ; Burnet, J.P. (CERN) ; Carli, C. (CERN) ; Chancé, A. (IRFU, Saclay) ; Craievich, P. (PSI, Villigen) ; Giovannozzi, M. (CERN) ; Grojean, C. (DESY ; Humboldt U., Berlin) et al.
Volume 1 of the FCC Feasibility Report presents an overview of the physics case, experimental programme, and detector concepts for the Future Circular Collider (FCC). This volume outlines how the FCC would address some of the most profound open questions in particle physics, from precision studies of the Higgs and EW bosons and of the top quark, to the exploration of physics beyond the Standard Model. [...]
arXiv:2505.00272; CERN-FCC-PHYS-2025-0002.- Geneva : CERN, 2025 - 290 p. - Published in : 10.17181/CERN.9DKX.TDH9 Fulltext: CERN-FCC-PHYS-2025-0002 - PDF; 2505.00272 - PDF;
6.
Experimental study of three-phase helium mixtures in confined channels / Vitrano, Andrea (CERN ; IRFU, Saclay, DACM) ; Stepanov, Vadim (IRFU, Saclay, DACM) ; Authelet, Gilles (IRFU, Saclay, DACM) ; Baudouy, Bertrand (IRFU, Saclay, DACM)
An experimental campaign was conducted to investigate heat and mass transfer phenomena in superfluid helium (He II) in two rectangular cross-section channels of high aspect ratios and different thickness resembling the space between steel collars in the LHC superconducting magnets. The experiments consisted of clamped heat flux tests at atmospheric pressure, in which a heater strip suddenly releases a constant heat load into the channel that is open to a helium bath on one side. [...]
2023 - 11 p. - Published in : Cryogenics 135 (2023) 103741 Fulltext: PDF;
7.
Double phase transition numerical modeling of superfluid helium for fixed non-uniform grids / Vitrano, Andrea (U. Paris-Saclay ; CERN) ; Baudouy, Bertrand (U. Paris-Saclay)
A thermo-fluid dynamic numerical model for the simulation of the first-order and second-order phase transitions in superfluid helium (He II) is presented. The model is based on a Finite Volume Method algorithm for transient multidimensional problems [...]
2022 - 16 p. - Published in : Comput. Phys. Commun. 273 (2022) 108275 Fulltext: PDF;
8.
Superfluid helium forced flow in the Gorter-Mellink regime / Vitrano, Andrea (CERN ; U. Paris-Saclay) ; Baudouy, Bertrand (U. Paris-Saclay)
A dimensional study of the momentum equations of superfluid helium is presented together with a parametric analysis of newly derived dimensionless numbers. The study is performed with a focus on the role of forced flows in the Gorter-Mellink regime. [...]
2023 - 5 p. - Published in : Cryogenics 129 (2023) 103628 Fulltext: PDF;
9.
Chapter 2: High-field magnets / Védrine, P (Saclay) ; García-Tabarés, L (Madrid, CIEMAT) ; Auchmann, B (PSI, Villigen) ; Ballarino, A (CERN) ; Baudouy, B (Saclay) ; Bottura, L (CERN) ; Fazilleau, P (Saclay) ; Noe, M (KIT, Karlsruhe) ; Prestemon, S (LBNL, Berkeley) ; Rochepault, E (Saclay) et al.
High-field magnets (HFM) are among the key technologies that will enable the search for new physics at the energy frontier. Approved projects (HL-LHC) and potential future circular machines such as proton-proton Future Circular Collider (FCC-hh) and Super proton-proton Collider (SppC) require the development of superconducting (SC) magnets that produce fields beyond those attained in the LHC.The programme proposed here rests on the results achieved over the past twenty years of European and international programmes devoted to Nb$_{3}$Sn and HTS accelerator magnets, such as CARE, EuCARD, EuCARD2, ARIES and the recently launched I-FAST. [...]
2022 - 51 p. Fulltext: PDF;
In : European Strategy for Particle Physics - Accelerator R&D Roadmap, pp.9-59
10.
Millisecond Time-Scale Measurements of Heat Transfer to an Open Bath of He II / Blomberg Ghini, Jonas (Norwegian U. Sci. Tech. ; CERN) ; Auchmann, Bernhard (CERN) ; Baudouy, Bertrand (IRFU, Saclay)
We explore steady state and transient heat transfer from a narrow, rectangular stainless steel heater strip cooled from one side by an open bath of He~II. [...]
arXiv:2203.04626.
- 2022. - 19 p.
Fulltext

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