CERN Accelerating science

R&D and Studies

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Performance Evaluation of the SPS Scraping System in View of the High Luminosity LHC / Mereghetti, Alessio
Injection in the LHC is a delicate moment, since the LHC collimation system cannot offer adequate protection during beam transfer [...]
CERN-THESIS-2015-116 - 369 p.

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Beam dynamics in the final focus section of the future linear collider / Blanco Garcia, Oscar Roberto
The exploration of new physics in the ``Tera electron-Volt''~(TeV) scale with precision measurements requires lepton colliders providing high luminosities to obtain enough statistics for the particle interaction analysis [...]
CERN-THESIS-2015-115 - 123 p.

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Status Report of Projects Activities at CERN / Missiaen, Dominique (CERN) ; Dewitte, Philippe (CERN) ; Dobers, Tobias (CERN) ; Fuchs, Jean-Frederic (CERN) ; Gayde, Jean-Christophe (CERN) ; Jones, Mark (CERN) ; Mainaud Durand, Helene (CERN)
Besides the Long Shut-Down 1 (LS1), some projects are still progressing at CERN. [...]
- 2014. - 6 p.
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Mitigating the Effect of an Orbit Kink on Vertical Emittance and Polarization / Koop, I (BINP, Novosibirsk, Russia)
Orbit kinks in FCC tunnel are under discussions for they can help to reduce the depth of few shafts [1]. Still two unwanted effects could make their use completely forbidden. [...]
CERN-ACC-2015-090.- Geneva : CERN, 2015 Fulltext: PDF;

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Scenario for Precision Beam Energy Calibration in FCC-ee / Koop, I A (BINP, Novosibirsk, Russia)
The resonance depolarization method was very successfully used in the experiments at LEP, where the mass of the Z-boson was determined with the relative uncertainty [1, 2]. In the future FCC-ee circular electron-positron collider the luminosity at Z-peak (beam energy 45.5 GeV) is expected be 4-5 orders of magnitude higher and one goal is to perform the same experiments as at LEP, but with much greater accuracy, approaching the level of [3]. [...]
CERN-ACC-2015-081.- Geneva : CERN, 2015 Fulltext: PDF;

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First estimation of the photon absorbers horizontal aperture for TLEP / Mounet, Nicolas Frank (CERN)
This note gives a simple estimate of the horizontal aperture of the photon absorbers that could be used in the TLEP collider, to intercept synchrotron radiation from dipoles..
- 2015. - 7 p.
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Top-up injection for FCC-ee / Aiba, Masamitsu (PSI, Villigen, Switzerland) ; Hernandez, Angela Saa (PSI, Villigen, Switzerland)) ; Zimmermann, Frank (CERN)
Top-up injection is essential for FCC-ee due to the very short luminosity lifetime especially for the Higgs and top-pair operation modes. Several schemes exist for topping up the collider rings [...]
CERN-ACC-2015-065.- Geneva : CERN, 2015 Fulltext: PDF;

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A design for an 802 MHz ERL Cavity / Calaga, Rama (CERN)
A low to medium energy recovery linac facility from 150-450-900 MeV in several stages is under study at CERN for validating important beam dynamics aspects and superconducting RF technology. [...]
- 2015.
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Electromechanical characterization of superconducting wires and tapes at 77 K / Bjoerstad, Roger
The strain dependency of the critical current in state-of-the-art cuprate high-temperature superconductors (HTS) has been characterized [...]
CERN-THESIS-2015-045 - 53 p.

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Alternative Approach to the Provision of the High-field Dipole for FCC-hh / Taylor, Thomas (CERN)
This paper describes a possible approach to reducing the complexity and cost of the high field dipole magnets. In addition the cooling of the winding could be improved in the proposed design, with a consequent reduction in the shielding requirements. [...]
CERN-ACC-2015-036.- Geneva : CERN, 2015 Fulltext: PDF;

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Future Circular Collider Documents (32)