CERN Accelerating science


Design of a compact superconducting crab-cavity for LHC using Nb-on-Cu-coating technique / Grudiev, Alexej (CERN) ; Atieh, Said (CERN) ; Calaga, Rama (CERN) ; Calatroni, Sergio (CERN) ; Capatina, Ofelia (CERN) ; Carra, Federico (CERN) ; Favre, Gilles (CERN) ; Ferreira, Leonel (CERN) ; Poncet, Jean-Francois (CERN) ; Richard, Thibaut (CERN) et al.
The design of a compact superconducting crab-cavity for LHC using Nb-on-Cu-coating technique is presented. The cavity shape is based on the ridged waveguide resonator with wide open apertures to provide access to the inner surface of the cavity for coating. [...]
2015 - 5 p. - Published in : 10.18429/JACoW-SRF2015-THPB048 Fulltext: PDF;
In : 17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.THPB048

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Developments on SRF coatings at CERN / Sublet, Alban (CERN) ; Aull, Sarah (CERN) ; Bártová, Barbora (CERN) ; Calatroni, Sergio (CERN) ; Richard, Thibaut (CERN) ; Rosaz, Guillaume (CERN) ; Taborelli, Mauro (CERN) ; Therasse, Mathieu (CERN) ; Venturini Delsolaro, Walter (CERN) ; Zhang, Pei (CERN)
The thin films techniques applied to Superconducting RF (SRF) has a long history at CERN. A large panel of cavities have been coated from LEP, to LHC. [...]
2015 - 5 p. - Published in : 10.18429/JACoW-SRF2015-TUPB027 Fulltext: PDF;
In : 17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.TUPB027

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Beam Tests of a Single-Channel Bunch-Crossing Identification Module for the Level-1 Trigger / Brawn, I P (Birmingham U.) ; Carney, R E (Birmingham U.) ; Ermolin, Y (Birmingham U.) ; Garvey, J (Birmingham U.) ; Staley, R J (Birmingham U.) ; Watson, A T (Birmingham U.) ; Eisenhandler, E (Queen Mary, U. of London) ; Landon, M (Queen Mary, U. of London) ; Gee, C N P (Rutherford) ; Gillman, A R (Rutherford) et al. /RD27
Identifying a pulse which spans several sampling periods with only one of those sampling periods is a non-trivial problem which must be addressed in the context of level-1 triggering for the LHC. We have built and tested a single-channel bunch-crossing identification demonstrator which implements digital algorithms to extract such timing information..
RD–27 Note 31.- 1993 - 19 p. Fulltext: PDF;

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Emittance Measurements For Future LHC Beams Using The PS Booster Measurement Line / Abelleira, Jose ; Hanke, Klaus (CERN) ; Mikulec, Bettina (CERN) ; Di Giovanni, Gian Piero (CERN)
The CERN PS Booster measurement line contains three pairs of SEM grids separated by drift space that measures the beam size in both planes. [...]
- 2017. - 8 p.
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LHC Availability 2017: Technical Stop 1 to Technical Stop 2 / Todd, Benjamin (CERN) ; Ponce, Laurette (CERN) ; Apollonio, Andrea (CERN) ; Walsh, David John (CERN)
This document summarises the LHC machine availability for the period of Technical Stop 1 (TS1) to Technical Stop 2 (TS2) in 2017. [...]
- 2017. - 14 p.
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Design and implementation of a crystal collimation test stand at the Large Hadron Collider / Mirarchi, Daniele (CERN) ; Hall, G (Imperial Coll., London) ; Redaelli, S (CERN) ; Scandale, W (CERN)
Future upgrades of the CERN Large Hadron Collider (LHC) demand improved cleaning performance of its collimation system. Very efficient collimation is required during regular operations at high intensities, because even a small amount of energy deposited on superconducting magnets can cause an abrupt loss of superconducting conditions (quench). [...]
2017 - 13 p. - Published in : Eur. Phys. J. C 77 (2017) 424

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Observations and measurements of dynamic effects due to beam-beam interactions in the LHC and extrapolation to the FCC-hh / Goncalves Jorge, Patrik
The Future Circular hadron-hadron Collider (FCC-hh) is a design study for a 100 TeV centre-of-mass energy [...]
CERN-THESIS-2017-161 -

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Review of BLM thresholds at tertiary LHC collimators / D'Andrea, Marco
The Large Hadron Collider is designed to accelerate protons at the unprecedented energy of 7 TeV [...]
CERN-THESIS-2017-160 - 75 p.

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beta* leveling with telescopic ATS squeeze (MD 2410) / Wenninger, Jorg (CERN) ; Fuchsberger, Kajetan (CERN) ; Hostettler, Michi (Universitaet Bern (CH)) ; Pojer, Mirko (CERN) ; Ponce, Laurette (CERN) ; Tydecks, Tobias (CERN)
Luminosity leveling by beta* is the baseline operational scenario of HL-LHC, and this leveling technique may be used in 2018 or during run~3 depending on the beam parameters and beta* range. [...]
- 2017.
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MD1405: Demonstration of forced dynamic aperture measurements at injection / Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Maclean, Ewen Hamish (CERN) ; Persson, Tobias Hakan Bjorn (CERN) ; Tomas Garcia, Rogelio (CERN)
Accurate measurements of dynamic aperture become more important for the LHC as it advances into increasingly nonlinear regimes of operations, as well as for the High Luminosity LHC where machine nonlinearities will have a significantly larger impact [...]
- 2017. - 6 p.
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