CERN Accelerating science

R&D and Studies

ECLOUD’18 summary and outlook / Cimino, R (Frascati) ; Zimmermann, F (CERN)
This article reports some highlights from the joint INFN/ARIES workshop ECLOUD’18. We focus on electron-cloud eects in the LHC and at SuperKEKB, predictions for future machines like FCC-hh, HE-LHC and FCC-ee, models and parameters for the secondary-emission yield, recent trends in electron-cloud simulations, mitigation measures, and novel phenomena. [...]
2020 - 8 p. Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.229-236 (CERN-2020-007)

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Power Converter Maintenance Optimization Using a Model-Based Digital Reliability Twin Paradigm / Felsberger, Lukas (Ludwig Maximilians Universitat (DE)) ; Todd, Benjamin (CERN) ; Kranzlmüller, Dieter (Ludwig-Maximilians-Universität München)
Optimization of operations and maintenance activities in factories was estimated to have a global economic potential of 1.2 to 3.7 trillion USD by recent studies. [...]
CERN-ACC-2020-0018 ;
- 2020. - 6 p.
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Field-Reliability Predictions based on Statistical System Life Cycle Models / Felsberger, Lukas (Ludwig Maximilians Universitat (DE)) ; Todd, Benjamin (CERN) ; Kranzlmüller, Dieter (Ludwig Maximilians Universität Muenchen)
Reliability measures the ability of a system to provide its intended level of service. It is influenced by many factors throughout a system life-cycle. [...]
CERN-ACC-2020-0017.- Geneva : CERN, 2020 - 20 p. Fulltext: PDF;
In : Machine Learning and Knowledge Extraction, Hamburg, Germany, 27 - 30 Aug 2018, pp.98-117

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Explainable Deep Learning for Fault Prognostics in Complex Systems: A Particle Accelerator Use-Case / Felsberger, Lukas (Ludwig Maximilians Universitat (DE)) ; Apollonio, Andrea (CERN) ; Cartier-Michaud, Thomas (CERN) ; Todd, Benjamin (CERN) ; Müller, Andreas (Hochschule Darmstadt) ; Kranzlmüller, Dieter (Ludwig-Maximilians-Universität Muenchen) ; Apollonio, Andrea (CERN)
Sophisticated infrastructures often exhibit misbehaviour and failures resulting from complex interactions of their constituent subsystems. Such infrastructures use alarms, event and fault information, which is recorded to help diagnose and repair failure conditions by operations experts. [...]
CERN-ACC-2020-0016.- Geneva : CERN, 2020 - 20 p. Fulltext: PDF;
In : , Dublin, Ireland, 25 - 28 Aug 2020, pp.139-158

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Intensity-dependent effects in the Accelerator Test Facility 2 and extrapolation to future electron-positron linear colliders / Korysko, Pierre
The high energy physics community considers electron-positron linear colliders in order to complement the results obtained at the Large Hadron Collider [...]
CERN-THESIS-2020-095 - 150 p.

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High frequency response of thick REBCO coated conductors in the framework of the FCC study / Romanov, Artur (CSIC, Catalunya) ; Krkotić, Patrick (CELLS - ALBA, LLS ; Barcelona, Polytechnic U.) ; Telles, Guilherme (CSIC, Catalunya) ; O'Callaghan, Joan (Barcelona, Polytechnic U.) ; Pont, Montse (CELLS - ALBA, LLS) ; Perez, Francis (CELLS - ALBA, LLS) ; Granados, Xavier (CSIC, Catalunya) ; Calatroni, Sergio (CERN) ; Puig, Teresa (CSIC, Catalunya) ; Gutierrez, Joffre (CSIC, Catalunya)
A thorough microwave response study of high temperature superconductors, considered as an alternative beam screen coating, has become integral in the design decisions for CERN’s future research infrastructure. Here, we present the surface resistance $R_{s}$ of various $\text {REBa}_{2}\text {Cu}_{3}\text {O}_{7-x}$ (RE = rare earth) coated conductors available in large scale as a function of magnetic field in a broad temperature range measured by a Hakki–Coleman type resonator with resonant frequency $\nu \approx {8}\,{\text {GHz}}$. [...]
2020 - 12 p. - Published in : Sci. Rep. 10 (2020) 12325 Fulltext: PDF;

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FCC-ee interaction region backgrounds / Voutsinas, G (CERN) ; Elsener, K (CERN) ; Janot, P (CERN) ; El Khechen, D (CERN) ; Kolano, A (CERN) ; Leogrande, E (CERN) ; Perez, E F (CERN) ; Tehrani, N A (CERN) ; Viazlo, O (CERN) ; Boscolo, M (Frascati) et al.
The FCC-ee machine induced backgrounds on the two proposed detectors (CLD and IDEA) have been studied in detail. Synchrotron Radiation (SR) considerations dictate the Interaction Region (IR) optimization. [...]
2020 - 7 p. - Published in : Int. J. Mod. Phys. A 35 (2020) 2041009

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Inductive Adder for the FCC Injection Kicker System / Woog, David
This thesis presents the design, construction, assembly and measurements of an inductive adder (IA) type pulse generator [...]
CERN-THESIS-2019-363 - Darmstadt : TUprints, 2020-07-01. - 130 p.

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Global electroweak fit in the FCC-ee era / Erler, J (Mexico U. ; U. Mainz, PRISMA) ; Schott, M (U. Mainz, PRISMA)
The top quark and Higgs boson masses have been predicted before their respective discoveries by the global fit of the Standard Model to electroweak precision data. With the Higgs boson discovery and the measurement of its mass, the last missing parameter of the Standard Model has been fixed and thus the internal consistency of the Standard Model can be probed at a new level by comparing direct measurements with the indirect predictions of the global electroweak fit. [...]
2020 - 3 p. - Published in : 10.23731/CYRM-2020-003.217 Fulltext: PDF; External link: CERN e-publishing
In : Theory for the FCC-ee, pp.217-219

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Helical beam screen for the Future Circular Collider for hadrons injection kicker magnets / Chmielińska, A (CERN ; Ecole Polytechnique, Lausanne) ; Barnes, M J (CERN)
The Future Circular Collider for hadrons (FCC-hh) is the proposed high-energy frontier particle collider, which is expected to enable proton-proton collisions at a center-of-mass energy of 100 TeV. The specifications for the FCC-hh injection kicker system are very challenging. [...]
2020 - 20 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 041002 Fulltext from Publisher: PDF;

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PBC - Physics Beyond Colliders (27)
Future Circular Collider Documents (186)