CERN Accelerating science

LHC

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2016-06-08
06:45
The CMS fast beams condition monitor back-end electronics based on MicroTCA technology: status and development / Zagozdzinska, Agnieszka A (Warsaw U. of Tech.) ; Dabrowski, Anne E (CERN) ; Pozniak, Krzysztof T (Warsaw U. of Tech.)
The Fast Beams Condition Monitor (BCM1F), upgraded for LHC Run II, is used to measure the online luminosity andmachine induced background for the CMS experiment. The detector consists of 24 single-crystal CVD diamond sensorsthat are read out with a custom fast front-end chip fabricated in 130 nm CMOS technology. [...]
2015 - 7 p. - Published in : Proc. SPIE 9662 (2015) 966235
In : Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2015, Wilga, Poland, 25 May 2015, pp.966235

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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.
Preprint

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