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CMS Notes

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2019-11-21
10:47
Beam Test Performance of Prototype Silicon Detectors for the Outer Tracker for the Phase-2 Upgrade of CMS / Andrea, Jeremy (Strasbourg, IPHC) ; Assiouras, Panagiotis (Democritos Nucl. Res. Ctr.) ; Auzinger, Georg (CERN) ; Bhattacharya, Rajarshi (Saha Inst.) ; Canepa, Anadi (Fermilab) ; Chanon, Nicolas Pierre (Lyon, IPN) ; Cherepanov, Vladimir (Florida U.) ; Deelen, Nikkie (UC, San Diego) ; Delcourt, Martin (Louvain U.) ; Dierlamm, Alexander Hermann (KIT, Karlsruhe, EKP) et al.
A new CMS tracker detector will be installed for operation at the High Luminosity LHC\,(HL-LHC). This detector comprises modules with two closely spaced parallel sensor plates and front-end ASICs capable of transmitting tracking information to the CMS Level-1\,(L1) trigger at the 40\,MHz beam crossing rate. [...]
CMS-NOTE-2019-006; CERN-CMS-NOTE-2019-006.- Geneva : CERN, 2019 - 27 p. Fulltext: PDF;

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2019-10-23
16:32
FPGA-based tracking for the CMS Level-1 trigger using the tracklet algorithm / Bartz, Edward Hugo (Rutgers U., Piscataway) ; Gershtein, Yury (Rutgers U., Piscataway) ; Halkiadakis, Eva (Rutgers U., Piscataway) ; Kyriacou, Savvas (Johns Hopkins U.) ; Stone, Robert (Rutgers U., Piscataway) ; Boudoul, Gaelle (Lyon, IPN) ; Viret, Sebastien (Lyon, IPN) ; Bucci, Rachael Elizabeth (Notre Dame U.) ; Hildreth, Michael (Notre Dame U.) ; Lannon, Kevin Patrick (Notre Dame U.) et al.
The high instantaneous luminosities expected following the upgrade of the Large Hadron Collider (LHC) to the High Luminosity LHC (HL-LHC) pose major experimental challenges for the CMS experiment. A central component to allow efficient operation under these conditions is the reconstruction of charged particle trajectories and their inclusion in the hardware-based trigger system. [...]
CMS-NOTE-2019-005; CERN-CMS-NOTE-2019-005.- Geneva : CERN, 2019 - 32 p. Fulltext: PDF;

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2019-09-27
08:33
The DAQ and Control System for the CMS Phase-1 Pixel Detector / The Tracker Group of the CMS Collaboration /CMS Collaboration
In 2017 a new pixel detector was installed in the CMS detector. This so-called Phase-1 pixel detector features four barrel layers in the central region and three disks per end in the forward regions. [...]
CMS-NOTE-2019-004; CERN-CMS-NOTE-2019-004.- Geneva : CERN, 2019 - 58 p. Fulltext: PDF;

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2019-07-18
15:17
New radiation-tolerant thin planar and 3D columnar n$^+$ on p silicon pixel sensors / Boscardin, M ; Ceccarelli, Rudy (INFN, Florence) ; Dalla Betta, G.F ; Darbo, G ; Dinardo, Mauro (INFN, Milan Bicocca ; Milan Bicocca U.) ; Giacomini, G ; Menasce, Dario (INFN, Milan Bicocca) ; Mendicino, R ; Meschini, Marco (INFN, Florence) ; Messineo, Alberto (INFN, Pisa ; Pisa U.) et al.
The High Luminosity upgrade of the CERN Large Hadron Collider (HL-LHC) calls for new high radiation-tolerant solid-state pixel sensors, capable of surviving irradiation fluences up to a few $10^{16}\\$\,n$_{\rm eq}$/cm$^2$ at $\sim3$\,cm from the interaction point. The INFN ATLAS-CMS joint research activity, in collaboration with Fondazione Bruno Kessler, is aiming at the development of thin n$^+$ on p type pixel sensors to be operated at the HL-LHC. [...]
CMS-NOTE-2019-003; CERN-CMS-NOTE-2019-003.- Geneva : CERN, 2019 - 8 p. Fulltext: PDF;

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2019-07-09
14:12
Quality Control of Silicon Pixel Wafers for the CMS Phase-1 Pixel Upgrade / Dilsiz, Kamuran (Iowa U.) ; Durgut, Suleyman (Iowa U.) ; Yi, Kai (Iowa U.) ; Spiegel, Leonard (Fermilab)
The CMS detector at the CERN Large Hadron Collider features as its innermost component a silicon pixel detector. The original pixel detector was completely replaced during the 2016-2017 winter technical stop. [...]
CMS-NOTE-2019-002; CERN-CMS-NOTE-2019-002.- Geneva : CERN, 2019 - 12 p. Fulltext: PDF;

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2019-03-07
09:56
Physics Potential of an Experiment using LHC Neutrinos / Beni, N. (CERN ; Debrecen, Inst. Nucl. Res.) ; Brucoli, M. (CERN) ; Buontempo, S. (INFN, Naples ; Naples U.) ; Cafaro, V. (INFN, Bologna ; U. Bologna, DIFA) ; Dallavalle, G.M. (INFN, Bologna ; U. Bologna, DIFA) ; Danzeca, S. (CERN) ; De Lellis, G. (CERN ; INFN, Naples ; Naples U.) ; Di Crescenzo, A. (INFN, Naples ; Naples U.) ; Giordano, V. (INFN, Bologna ; U. Bologna, DIFA) ; Guandalini, C. (INFN, Bologna ; U. Bologna, DIFA) et al.
Production of neutrinos is abundant at LHC. Flavour composition and energy reach of the neutrino flux from proton-proton collisions depend on the pseudorapidity $\eta$. [...]
arXiv:1903.06564; CMS-NOTE-2019-001; CERN-CMS-NOTE-2019-001.- Geneva : CERN, 2019-10-11 - 19 p. - Published in : J. Phys. G 46 (2019) 115008 Fulltext: 1903.06564 - PDF; NOTE2019_001 - PDF;

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2018-12-12
09:56
Expected performance of the physics objects with the upgraded CMS detector at the HL-LHC / The CMS Collaboration /CMS Collaboration
In this note, the performance of the physics objects (electrons, photons, taus, jets, and missing energy), as expected after the CMS Phase-2 detector upgrade, is presented. The performance studies use the full simulation of the CMS Phase-2 detector with a mean number of proton-proton interactions per bunch crossing of 200. [...]
CMS-NOTE-2018-006; CERN-CMS-NOTE-2018-006.- Geneva : CERN, 2018 - 33 p. Fulltext: PDF;

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2018-12-07
16:07
HCAL automated software building and deployment with GitLab / Southwick, David Charles (Iowa U.)
This report details the creation and implementation of continuous integration practices within the Hadronic Calorimeter (HCAL) subdetector of the Compact Muon Solenoid (CMS) at the European Organization for Nuclear Research (CERN). Steps detail migration of detector operations code base from SVN to GIT, followed by creation and development of a new Continuous Integration (CI) workflow for developers..
CMS-NOTE-2018-005; CERN-CMS-NOTE-2018-005.- Geneva : CERN, 2018 - 8 p. Fulltext: PDF;

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2018-11-30
09:57
CMS Endcap Calorimeter for HL-LHC design. Trays Skirt for Backing HE Endcap Calorimeter accessibility. Technical proposal. / Ershov, Yuri (Dubna, JINR) ; Golutvin, Igor (Dubna, JINR) ; Kashpydai, Omak (NIKIET, Moscow) ; Kulikova, Tatiana (NIKIET, Moscow) ; Lavrenov, Pavel (NIKIET, Moscow) ; Orlov, A.N ; Postnov, Artem (NIKIET, Moscow)
The existing Compact Muon Solenoid (CMS) Endcap Hadron Calorimeters (HE) have been in operation for several years and contributed substantially to the success of the CMS Physics Program. The High Luminosity Large Hadron Collider (HL-LHC) performance criteria, however, require a re-examination of the ability of the detector active material and electronics to meet the requirements of 3000 fb$^{-1}$ [1, 2]. [...]
CMS-NOTE-2018-004; CERN-CMS-NOTE-2018-004.- Geneva : CERN, 2016 - 6 p. Fulltext: PDF;

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2018-08-03
15:07
A High-performance Track Fitter for Use in Ultra-fast Electronics / Clement, Emyr John (Bristol U.) ; De Mattia, Marco (Texas A-M) ; Dutta, Suchandra (Saha Inst.) ; Eusebi, Ricardo (Texas A-M) ; Fu, Yu (Florida U.) ; Hahn, Kristan Allan (Northwestern U.) ; Hu, Zhen (Fermilab) ; Jindariani, Sergo (Fermilab) ; Konigsberg, Jacobo (Florida U.) ; Liu, Tiehui Ted (Fermilab) et al.
This article describes a new charged-particle track fitting algorithm designed for use in high-speed electronics applications such as hardware-based triggers in high-energy physics experiments. Following a novel technique designed for fast electronics, the positions of the hits on the detector are transformed before being passed to a linearized track parameter fit. [...]
CMS-NOTE-2018-003; CERN-CMS-NOTE-2018-003.- Geneva : CERN, 2018 - 15 p. Fulltext: PDF;

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