CERN Accelerating science

LHC

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2016-05-12
16:59
Cryogenics for high-energy particle accelerators: highlights from the first fifty years / Lebrun, Philippe (CERN)
Applied superconductivity has become a key technology for high-energy particle accelerators, allowing to reach higher beam energy while containing size, capital expenditure and operating costs. [...]
CERN-ACC-2016-0033.
- 2016. - 12 p.
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2016-04-29
14:18
CHARM Facility Test Area Radiation Field Description / Thornton, Adam (University of Surrey (GB))
Specification document summarising the radiation field of the CHARM facility test area. [...]
CERN-ACC-NOTE-2016-0041.
- 2016. - 51 p.
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2016-04-29
07:05
A novel Beam Halo Monitor for the CMS experiment at the LHC / Orfanelli, S (Natl. Tech. U., Athens ; CERN) ; Dabrowski, A E (CERN) ; Giunta, M (CERN) ; Loos, R (CERN) ; Ambrose, M J (Minnesota U.) ; Mans, J (Minnesota U.) ; Rusack, R (Minnesota U.) ; Stifter, K (Minnesota U.) ; Stickland, D (Princeton U.) ; Fabbri, F (INFN, Bologna) et al.
A novel Beam Halo Monitor (BHM) has been designed and built for the CMS experiment at the LHC. It will provide an online, bunch-by-bunch measurement of background particles created by interactions of the proton beam with residual gas molecules in the vacuum chamber or with collimator material upstream of CMS. [...]
2015 - Published in : J. Instrum. 10 (2015) P11011 IOP Open Access article: PDF;

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2016-04-26
13:28
Studies of the $B^{0}_{s}-\overline{B}^{0}_{s}$ in the CMS experiment at the LHC / Fedi, Giacomo
The B0s-B0sbar system was investigated using the J/ψ(μ+μ−)φ(K+K−) decay channel [...]
CERN-THESIS-2016-026. - 161 p.

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2016-04-17
19:39
High Gradient $Nb_3Sn$ Quadrupole Demonstrator MKQXF Engineering Design / Kokkinos, C (FEAC Engineering P.C.) ; Karppinen, Mikko (CERN)
A new mechanical design concept for the $Nb_3Sn$ quadrupoles has been developed with a goal of an accelerator quality magnet that can be industrially produced in large series. [...]
CERN-ACC-NOTE-2016-0039.
- 2016. - 46 p.
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2016-04-12
11:58
Crystal Collimation with protons at injection energy / Rossi, Roberto (Universita e INFN, Roma I (IT)) ; Galluccio, Francesca (Universita e INFN, Napoli (IT)) ; Masi, Alessandro (CERN) ; Mirarchi, Daniele (CERN) ; Montesano, Simone (CERN) ; Redaelli, Stefano (CERN) ; Valentino, Gianluca (University of Malta (MT)) ; Scandale, Walter (CERN)
During this MD, performed on August 30th, 2015, bent silicon crystals were tested with protons beams for a possible usage of crystal-assisted collimation [...]
CERN-ACC-NOTE-2016-0035.
- 2015. - 9 p.
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2016-04-05
16:11
LHC injection optics measurements at commissioning (2015) / Garcia-Tabares Valdivieso, Ana (Ministere des affaires etrangeres et europeennes (FR)) ; Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Coello De Portugal - Martinez Vazquez, Jaime Maria (Universitat Politecnica Catalunya (ES)) ; Garcia-Bonilla, Alba-Carolina ; Langner, Andy Sven (CERN) ; Maclean, Ewen Hamish (CERN) ; Malina, Lukas (University of Oslo (NO)) ; Mcateer, Meghan Jill ; Persson, Tobias Hakan Bjorn (CERN) ; Skowronski, Piotr Krzysztof (CERN) et al.
This report describes the measurement and correction process followed during the 2015 LHC injection optics commissioning which extended into Machine Developments (MDs). [...]
CERN-ACC-NOTE-2016-0033.
- 2016. - 13 p.
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2016-03-16
10:53
Determination of spin and parity of the Higgs boson in the $WW* \to ev\nu\rho$ decay channel with the ATLAS detector / Karastathis, Nikolaos
So far, the Standard Model is the most successful theory to summarise our knowledge on Particle Physics [...]
CERN-THESIS-2016-015. - 320 p.

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2016-03-11
11:38
Beam Imaging and Luminosity Calibration / Salfeld-Nebgen, Jakob (MIT) ; Klute, Markus (MIT) ; Medlock, Catherine Aiko (MIT)
We discuss a method to reconstruct two-dimensional proton bunch densities using vertex distributions accumulated during LHC beam-beam scans. [...]
CERN-OPEN-2016-003.
- 2016. - 9 p.
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2016-03-04
14:08
LHC Heavy-Ion Collimation Quench Test at 6.37Z TeV / Hermes, Pascal Dominik (Westfaelische Wilhelms-Universitaet Muenster (DE)) ; Auchmann, Bernhard (CERN) ; Bruce, Roderik (CERN) ; Hofle, Wolfgang (CERN) ; Holzer, Eva Barbara (CERN) ; Kalliokoski, Matti (Helsinki Institute of Physics (FI)) ; Kotzian, Gerd (CERN) ; Mereghetti, Alessio (CERN) ; Mirarchi, Daniele (CERN) ; Quaranta, Elena (Politecnico di Milano (IT)) et al.
This note summarizes the collimation quench test MD with 208Pb82+ beams at 6.37Z TeV in which a quench of a dipole magnet in the dispersion suppressor (DS) downstream of the betatron collimation region (IR7) was achieved. [...]
CERN-ACC-NOTE-2016-0031.
- 2016. - 10 p.
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