CERN Accelerating science

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1.
Parameters of the preproduction series SiPMs for the CMS HCAL phase I upgrade / Heering, A (Notre Dame U.) ; Musienko, Yu (Notre Dame U. ; Moscow, INR) ; Ruchti, R (Notre Dame U.) ; Wayne, M (Notre Dame U.) ; Karneyeu, A (Moscow, INR) ; Postoev, V (Moscow, INR)
In 2012 the HCAL SiPM photo sensor upgrade was approved for the increased luminosity (5*10 34 ) of SLHC. The upgrade will replace the current hybrid photodiodes (HPDs) with multi-pixel Geiger-mode avalanche photodiodes, also known as silicon photomultipliers (SiPMs). [...]
2016 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 824 (2016) 115-118
In : Frontier Detectors for Frontier Physics: 13th Pisa Meeting on Advanced Detectors, La Biodola, Isola D'elba, Italy, 24 - 30 May 2015, pp.115-118
2.
Radiation damage studies of silicon photomultipliers for the CMS HCAL phase I upgrade / Musienko, Yu (Notre Dame U.) ; Heering, A (Notre Dame U.) ; Ruchti, R (Notre Dame U.) ; Wayne, M (Notre Dame U.) ; Karneyeu, A (Moscow, INR) ; Postoev, V (Moscow, INR)
Results from a study of the radiation hardness of silicon photomultipliers (SiPMs) are presented. Recently developed high density (>4500 cells/mm 2 ) SiPMs from two manufacturers (Hamamatsu (Japan) and KETEK (Germany) were exposed to 62 MeV protons at fluences up to 1×10 12 protons/cm 2 at the UCL (Belgium) proton cyclotron (LIF irradiation facility). [...]
2015 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 787 (2015) 319-322
In : 7th International Conference on New Developments in Photodetection, Tours, France, 30 Jun - 4 Jul 2014, pp.319-322
3.
A New Boson with a Mass of 125 GeV Observed with the CMS Experiment at the Large Hadron Collider / CMS Collaboration
The Higgs boson was postulated nearly five decades ago within the framework of the standard model of particle physics and has been the subject of numerous searches at accelerators around the world. Its discovery would verify the existence of a complex scalar field thought to give mass to three of the carriers of the electroweak force—the W+, W–, and Z0 bosons—as well as to the fundamental quarks and leptons. [...]
Geneva : CERN, 2012 - 16 p. - Published in : Science 338 (2012) 1569-1575 Preprint: PDF; External link: Supplementary material
In : Breakthrough of the year
4.
Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC / CMS Collaboration
Results are presented from searches for the standard model Higgs boson in proton-proton collisions at $\sqrt{s}$=7 and 8 TeV in the CMS experiment at the LHC, using data samples corresponding to integrated luminosities of up to 5.1 inverse femtobarns at 7 TeV and 5.3 inverse femtobarns at 8 TeV. The search is performed in five decay modes: $\gamma\gamma$, ZZ, WW, $\tau^+ \tau^-$, and $b\bar{b}$. [...]
arXiv:1207.7235; CMS-HIG-12-028; CERN-PH-EP-2012-220; CMS-HIG-12-028; CERN-PH-EP-2012-220.- Geneva : CERN, 2012-08-17 - 32 p. - Published in : Phys. Lett. B 716 (2012) 30-61 Elsevier Open Access article: PDF; Fulltext: PDF; External links: Press Release; Interactions.org article; DOE Science Highlight
In : Higgs booklet, pp.30
5.
Commissioning and performance of the CMS pixel tracker with cosmic ray muons / CMS Collaboration
The pixel detector of the Compact Muon Solenoid experiment consists of three barrel layers and two disks for each endcap. The detector was installed in summer 2008, commissioned with charge injections, and operated in the 3.8 T magnetic field during cosmic ray data taking. [...]
arXiv:0911.5434; CMS-CFT-09-001; CMS-CFT-09-001.- Geneva : CERN, 2010 - 37 p. - Published in : JINST 5 (2010) T03007 Fulltext: arXiv:0911.5434 - PDF; fermilab-pub-10-144-cms - PDF; IOP Open Access article: PDF;
6.
Measurement of the muon stopping power in lead tungstate / CMS Collaboration
A large sample of cosmic ray events collected by the CMS detector is exploited to measure the specific energy loss of muons in the lead tungstate (PbWO$_4$) of the electromagnetic calorimeter. The measurement spans a momentum range from 5 GeV/$c$ to 1 TeV/$c$. [...]
arXiv:0911.5397; CMS-CFT-09-005; CMS-CFT-09-005.- 2010 - 31 p. - Published in : JINST 5 (2010) P03007 Fulltext: fermilab-pub-10-146-cms - PDF; arXiv:0911.5397 - PDF; IOP Open Access article: PDF;
7.
Performance of the CMS Level-1 trigger during commissioning with cosmic ray muons and LHC beams / CMS Collaboration
The CMS Level-1 trigger was used to select cosmic ray muons and LHC beam events during data-taking runs in 2008, and to estimate the level of detector noise. This paper describes the trigger components used, the algorithms that were executed, and the trigger synchronisation. [...]
arXiv:0911.5422; CMS-CFT-09-013; CMS-CFT-09-013.- 2010 - 49 p. - Published in : JINST 5 (2010) T03002 Fulltext: arXiv:0911.5422 - PDF; fermilab-pub-10-145-cms - PDF; IOP Open Access article: PDF;
8.
Performance of CMS muon reconstruction in cosmic-ray events / CMS Collaboration
The performance of muon reconstruction in CMS is evaluated using a large data sample of cosmic-ray muons recorded in 2008. Efficiencies of various high-level trigger, identification, and reconstruction algorithms have been measured for a broad range of muon momenta, and were found to be in good agreement with expectations from Monte Carlo simulation. [...]
arXiv:0911.4994; CMS-CFT-09-014; CMS-CFT-09-014.- 2010 - 47 p. - Published in : JINST 5 (2010) T03022 Fulltext: fermilab-pub-10-148-cms - PDF; arXiv:0911.4994 - PDF; IOP Open Access article: PDF; External link: Fulltext
9.
Commissioning and performance of the CMS silicon strip tracker with cosmic ray muons / CMS Collaboration
During autumn 2008, the Silicon Strip Tracker was operated with the full CMS experiment in a comprehensive test, in the presence of the 3.8 T magnetic field produced by the CMS superconducting solenoid. Cosmic ray muons were detected in the muon chambers and used to trigger the readout of all CMS sub-detectors. [...]
arXiv:0911.4996; CMS-CFT-09-002; CMS-CFT-09-002.- 2010 - 45 p. - Published in : JINST 5 (2010) T03008 Fulltext: fermilab-pub-10-147-cms - PDF; arXiv:0911.4996 - PDF; IOP Open Access article: PDF; External link: Preprint
10.
Performance of the CMS cathode strip chambers with cosmic rays / CMS Collaboration
The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. Their performance has been evaluated using data taken during a cosmic ray run in fall 2008. [...]
arXiv:0911.4992; CMS-CFT-09-011; CMS-CFT-09-011.- 2010 - 39 p. - Published in : JINST 5 (2010) T03018 Fulltext: fermilab-pub-10-149-cms - PDF; arXiv:0911.4992 - PDF; IOP Open Access article: PDF;

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