CERN Accelerating science

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2017-07-13
18:04
Updated parameters for HL-LHC aperture calculations for proton beams / Bruce, Roderik (CERN) ; Bracco, Chiara (CERN) ; De Maria, Riccardo (CERN) ; Giovannozzi, Massimo (CERN) ; Redaelli, Stefano (CERN) ; Tomas Garcia, Rogelio (CERN) ; Velotti, Francesco Maria (CERN) ; Wenninger, Jorg (CERN)
During the accelerator design, it is important to have a reliable way of estimating the available aperture, in order to ensure a sufficient beam clearing and avoid potentially limiting beam losses on the aperture. [...]
CERN-ACC-2017-0051.
- 2017. - 14 p.
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2017-07-05
11:38
LHC Availability 2017: Restart to Technical Stop 1 / Todd, Benjamin (CERN) ; Ponce, Laurette (CERN) ; Apollonio, Andrea (CERN)
This document summarises the LHC machine availability for the period of Restart to Technical Stop 1 (TS1) in 2017. [...]
CERN-ACC-NOTE-2017-0046.
- 2017. - 15 p.
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2017-06-28
14:25
A Search for Long Lived Neutral Particles Decaying to Hadronic States in Proton-Proton Collisions in the ATLAS Detector at $\sqrt{s} = 8$ TeV and $\sqrt{s} = 13$ TeV at the LHC / Rosten, Rachel Christine
A search for the decay of a heavy scalar boson into pairs of long-lived neutral particles in $20.3~\rm{fb}^{-1}$ of proton proton collisions at $\sqrt{s}=8$ TeV and $3.2~\rm{fb}^{-1}$ at $\sqrt{s}=13$ TeV in the ATLAS detector is presented [...]
CERN-THESIS-2017-075 -

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2017-06-20
09:57
Limitations due to strong head-on beam-beam interactions (MD 1434) / Buffat, Xavier (CERN) ; Furuseth, Sondre Vik ; Iadarola, Giovanni (CERN) ; Papadopoulou, Parthena Stefania (University of Crete (GR)) ; Papaphilippou, Yannis (CERN) ; Pellegrini, Dario (CERN) ; Pojer, Mirko (CERN) ; Crockford, Guy (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Trad, Georges (CERN) et al.
The results of an experiment aiming at probing the limitations due to strong head on beam-beam interactions are reported. [...]
CERN-ACC-NOTE-2017-0044.
- 2017. - 11 p.
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2017-06-17
07:13
Flexibility of LHC Optics for Forward Proton Measurements / Cieśla, Krzysztof (Cracow Tech. U.) ; Staszewski, Rafal (Cracow, INP)
The geometric acceptance of the ATLAS Forward Proton detectors is studied. The elements of the LHC magnetic lattice that are most important for the acceptance are identified. [...]
2016 - 6 p. - Published in : Acta Phys. Pol. B 47 (2016) 1633 Fulltext: PDF;
In : 22th Cracow EPIPHANY Conference on the Physics in LHC Run2, Cracow, Poland, 7 - 9 Jan 2016, pp.1633

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2017-06-13
13:59
FESA class for off-momentum lossmaps and decomposition of beam losses at LHC / Wyszynski, Michal Jakub (Warsaw University of Technology (PL)) ; Jackson, Stephen (CERN) ; Pojer, Mirko (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Valentino, Gianluca (University of Malta (MT))
The project consisted of two main parts. [...]
CERN-ACC-NOTE-2017-0043.
- 2016. - 24 p.
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2017-05-29
06:05
Overview of the Large Hadron Collider and of the ATLAS and CMS experiments / Nisati, Aleandro (INFN, Rome) ; Sharma, Vivek (UC, San Diego)
The Large Hadron Collider is the most powerful particle accelerator ever built. It has allowed the discovery of a Higgs boson with mass near 125 GeV in 2012 by the ATLAS and CMS experiments. [...]
2016 - 24 p. - Published in : 10.1142/9789814425452_0004

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2017-05-27
11:22
Development and Optimisation of the SPS and LHC beam diagnostics based on Synchrotron Radiation monitors / Trad, Georges
Measuring the beam transverse emittance is fundamental in every accelerator, in particular for colliders, where its precise determination is essential to maximize the luminosity and thus the performance of the colliding beams.
 Synchrotron Radiation (SR) is a versatile tool for non-destructive bea [...]
CERN-THESIS-2014-390 - 232 p.

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2017-05-24
15:58
Thermophysical and mechanical characterization of advanced materials for the LHC collimation system / Bianchi, Laura
The aim of the thesis is to describe the methods employed for the thermo-physical and mechanical characterization and to show the results of the campaign conducted over two ceramic matrix composites, CFC FS140® and MG-6403-Fc, which are candidates as jaws materials in the LHC collimation system [...]
CERN-THESIS-2017-043 - 133 p.

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2017-05-24
09:29
THERMOPHYSICAL AND MECHANICAL CHARACTERIZATION OF ADVANCED MATERIALS FOR THE LHC COLLIMATION SYSTEM / Bianchi, Laura (Universita & INFN, Pisa (IT))
The aim of the thesis is to describe the methods employed for the thermo-physical and mechanical characterization and to show the results of the campaign conducted over two ceramic matrix composites, CFC FS140® and MG-6403-Fc, which are candidates as jaws materials in the LHC collimation system. [...]
CERN-ACC-NOTE-2017-0038.
- 2017. - 133 p.

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