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2017-10-16
19:46
Electron cloud buildup studies for the LHC / Dijkstal, Philipp (Technische Universitaet Darmstadt (DE)) ; Iadarola, Giovanni (dir.) (CERN) ; Boine-Frankenheim, Oliver (dir.) (TU Darmstadt)
Electron clouds can develop in accelerators operating with positively charged particles. The con- sequences of e-cloud related effects are very important for the operation of the Large Hadron Collider (LHC) at CERN, and for the design of future accelerators including the LHC luminosity upgrade (HL-LHC) [...]
CERN-THESIS-2017-180.- 90 p. Fulltext: PDF; External link: Approve this document (restricted)

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2017-10-12
06:13
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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2017-10-12
06:12
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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2017-10-11
06:02
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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2017-10-06
17:36
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. [...]
CERN-ACC-NOTE-2017-0055.
- 2017. - 8 p.
Full text

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2017-09-29
16:27
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. [...]
CERN-ACC-NOTE-2017-0053.
- 2017. - 14 p.
Full text

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2017-09-29
06:23
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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2017-09-27
20:55
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 -

Fulltext
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2017-09-27
16:52
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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2017-09-21
11:12
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. [...]
CERN-ACC-NOTE-2017-0052.
- 2017.
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