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CMS Conference Reports

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2025-05-06
15:48
Hybrid production status of the CMS Outer Tracker for the Phase-2 Upgrade / Martin Lipinski of the CMS Collaboration /CMS Collaboration
The CMS Collaboration will exchange the whole silicon tracking system as part of the Phase-2 Upgrade. About 8000 two co-planar strip sensor (2S) modules and 5880 macro-pixel and strip sensor (PS) modules will be built for the new Outer Tracker, requiring 47520 hybrid circuits. [...]
CMS-CR-2025-108.- Geneva : CERN, 2025 - 4 p. Fulltext: PDF;
In : 17th Vienna Conference on Instrumentation (VCI2025), Vienna, Austria, 17 - 21 Feb 2025

Detaljnije
2025-05-06
15:48
Heavy flavour results from CMS / Konecki, Marcin Andrzej (Warsaw U.) /CMS Collaboration
The CMS experiment has delivered numerous significant measurements using data from LHC Run-2 and the ongoing Run-3. This report explains key components of the CMS detector relevant to heavy flavour physics. [...]
CMS-CR-2025-106.- Geneva : CERN, 2025 - 11 p. Fulltext: PDF;
In : 31st Cracow Epiphany Conference on the recent LHC results (Epiphany 2025), Cracow, Poland, 13 - 17 Jan 2025

Detaljnije
2025-05-06
15:48
Properties and rare production and decay processes of the Higgs boson in CMS / Bluj, Michal Jacek (NCBJ, Swierk) /CMS Collaboration
This report summarises measurements of the Higgs boson properties performed with the CMS experiment at the CERN LHC. The measurements presented here base on data from pp collisions at center-of-mass energy of 7, 8 and 13 TeV collected up to year 2018 and corresponding to integrated luminosity of 5, 20 and 138 fb-1, respectively. [...]
CMS-CR-2025-104.- Geneva : CERN, 2025 - 14 p. Fulltext: PDF;

Detaljnije
2025-05-06
15:45
CMS Level-1 Data Scouting for High-Luminosity LHC / Sieder, Leah-louisa (CERN) /CMS Collaboration
The CMS Experiment at the CERN Large Hadron Collider (LHC) relies on a Level-1 Trigger (L1T) system to process in real time all potential collisions, happening at a rate of 40 MHz, and select the most promising ones for data acquisition and further processing. The CMS upgrades for the up-coming high-luminosity LHC run will vastly improve the quality of the L1T event reconstruction, providing opportunities for a complementary Data Scouting approach where physics analysis is performed on a data stream containing all collisions but limited to L1T reconstruction. [...]
CMS-CR-2025-048.- Geneva : CERN, 2025 - 8 p. Fulltext: PDF;
In : 27th International Conference on Computing in High Energy & Nuclear Physics, Kraków, Poland, 19 - 25 Oct 2024

Detaljnije
2025-05-06
15:43
The Run 3 timing detector of the CMS Precision Proton Spectrometer: Status and performance / Rantanen, Milla-maarit (Helsinki Inst. of Phys.) /CMS Collaboration
The CMS Precision Proton Spectrometer at the LHC measures protons scattered in the very forward region. Single crystal diamond detectors are used to precisely measure the proton time-of-flights and to reconstruct the longitudinal position of the interaction vertex. [...]
CMS-CR-2024-104.- Geneva : CERN, 2024 - 3 p. Fulltext: PDF;
In : 16th Pisa Meeting on Advanced Detectors (Pisameet 2024), La Biodola, Isola D'elba, Italy, 26 May - 1 Jun 2024

Detaljnije
2025-04-28
10:48
CMS RPC Link System Tester and Quality Control / Esfandi, Fateme (IPM, Tehran) /CMS Collaboration
The Link System of resistive plate chambers (RPC) within the CMS Muon detector is being upgraded as part of CMS upgrade phase-2, aimed at optimising performance for the high luminosity LHC (HL-LHC) environment. This upgrade employs new electronics to improve Muon hit timing resolution and handle higher data rates. [...]
CMS-CR-2025-013.- Geneva : CERN, 2025 - 8 p. Fulltext: PDF;
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024

Detaljnije
2025-04-22
11:01
Design and construction of the Outer Tracker for the CMS Phase-2 Upgrade / Zoi, Irene (Fermilab) /CMS Collaboration
The High-Luminosity LHC (HL-LHC) is expected to deliver an integrated luminosity of 3000--4000~fb−1 over 10 years of operation with the peak instantaneous luminosity reaching about \mbox{5--7.5×1034cm−2\,s−1}. During Long Shutdown 3, several components of the CMS detector will undergo major improvements, called Phase-2 upgrades, to be able to operate in the challenging environment of the HL-LHC. [...]
CMS-CR-2025-081.- Geneva : CERN, 2025 - 5 p. Fulltext: PDF;
In : 17th Vienna Conference on Instrumentation (VCI2025), Vienna, Austria, 17 - 21 Feb 2025

Detaljnije
2025-04-22
11:01
Beam test characterization of an irradiated pixel-strip module for the HL-LHC CMS tracker upgrade. / Sohail, Iqra (Quaid-i-Azam U.) /CMS Collaboration
\begin{abstract} A new tracker for the CMS detector at the Large Hadron Collider will be built to address the demands of the High Luminosity upgrade, which aims to achieve peak instantaneous luminosities from 5 up to 7.5×1034cm−2s−1 and an integrated luminosity of 3000--4000 fb−1 at a center of mass energy of 14 TeV. To meet the resulting challenges, the CMS experiment is changing its outer tracker silicon modules to include tracking capabilities at the Level-1 trigger [...]
CMS-CR-2025-080.- Geneva : CERN, 2025 - 5 p. Fulltext: PDF;
In : 17th Vienna Conference on Instrumentation (VCI2025), Vienna, Austria, 17 - 21 Feb 2025

Detaljnije
2025-04-15
12:53
CMS Inner Tracker Upgrade for the HL-LHC Design, Development, and Production Status / Kuo, Chin-chia (Hamburg U.) /CMS Collaboration
The High Luminosity Large Hadron Collider operation will push the CMS experiment to its limits, with an instantaneous peak luminosity of 7.5×1034cm−2s−1 and an integrated luminosity of 300fb−1 per year. This environment will expose the CMS Inner Tracker (IT) pixel detector at the center of CMS to unprecedented levels of radiation, with a 1 MeV neutron equivalent fluence of Φeq=2.6×1016cm−2 and a total ionizing dose of 13MGy after 3000fb−1 of integrated luminosity. [...]
CMS-CR-2025-084.- Geneva : CERN, 2025 - 5 p. Fulltext: PDF;
In : 17th Vienna Conference on Instrumentation (VCI2025), Vienna, Austria, 17 - 21 Feb 2025

Detaljnije
2025-04-15
10:00
CMS FlashSim end-to-end simulation with ML / Rizzi, Andrea (INFN, Pisa ; Pisa U.) /CMS Collaboration
Detailed event simulation at the LHC is taking a large fraction of computing budget.CMS developed an end-to-end ML based simulation that can speed up the time for production of analysis samples of several orders of magnitude with a limited loss of accuracy. As the CMS experiment is adopting a common analysis level format, the NANOAOD, for a larger number of analyses, such an event representation is used as the target of this ultra fast simulation that we call FlashSim. [...]
CMS-CR-2025-027.- Geneva : CERN, 2025 - 13 p. Fulltext: PDF;
In : 27th International Conference on Computing in High Energy & Nuclear Physics, Kraków, Poland, 19 - 25 Oct 2024

Detaljnije