2023-12-04
11:52 |
ttbar differential and inclusive measurements
/ Walter, David (CERN)
/ATLAS and CMS Collaborations
This report summarizes recent results of inclusive and differential tt cross section measurements from the ATLAS and CMS Collaborations at the LHC. Measurements at sqrt(s) = 7, 8, 13, and 13.6 TeV are compared to state-of-the-art theory predictions, using different PDF sets, matrix element calculations, or parton shower models. [...]
CMS-CR-2023-292.-
Geneva : CERN, 2023 - 7 p.
Fulltext: PDF;
In : 16th International Workshop on Top Quark Physics, Traverse City, Michigan, Us, 24 - 29 Sep 2023
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2023-12-04
11:52 |
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2023-12-04
11:52 |
Serial powering characterisation for the CMS Inner Tracker at the High Luminosity LHC
/ Ceccarelli, Rudy (INFN, Florence)
The CMS tracking system will be completely replaced in order to operate in the extreme conditions of the High Luminosity LHC.
The new tracker will consist of two main subdetectors:
the Inner Tracker, containing pixel modules, and the Outer Tracker, consisting of strip and macro-pixel modules.
In the Inner Tracker, silicon sensors will be read out by the CMS Readout Chip (CROC).
The chip, built in 65 nm CMOS technology, is able to withstand high radiation doses (500\,Mrad) and hit rates (3\,$\mathrm{GHz/cm^2}$ on the innermost tracking layer) during operation.
Moreover, it must handle a finer sensor granularity (2500\,$\mu\mathrm{m^2}$ pixels) and operate at low detection thresholds (1000\,$\mathrm{e^-}$).
The Inner Tracker will make use of the serial powering scheme to provide the $\sim60\,\mathrm{kW}$ required by $\sim4000$ modular units.
The Shunt-LDO (SLDO) regulator is the part of the CROC responsible for providing the power by draining a constant current in time, independently of the chip power consumption.
Tests performed with Single Chip Cards (SCC) in serial configurations are reported in this paper..
CMS-CR-2023-280.-
Geneva : CERN, 2023 - 9 p.
Fulltext: PDF;
In : 16th Topical Seminar on Innovative Particle and Radiation Detectors, Siena, It, 25 - 29 Sep 2023
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2023-12-04
11:52 |
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2023-12-04
11:50 |
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2023-12-02
08:43 |
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2023-12-01
13:25 |
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2023-12-01
07:04 |
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2023-12-01
07:04 |
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2023 Compendium of Radiation-Induced Effects for Candidate Particle Accelerator
/ Ferraro, Rudy (CERN) ; Gkountoumis, Panagiotis (CERN) ; Foucard, Gilles (CERN) ; Ventura, Antonio (CERN) ; Scialdone, Antonio (CERN ; Montpellier U.) ; Zimmaro, Alessandro (CERN ; Montpellier U.) ; Glecer, Bruno (CERN) ; Koseoglou, Sokratis (CERN) ; Botias, Cai Arcos (CERN) ; Masi, Alessandro (CERN) et al.
The sensitivity of a variety of components for particle accelerator electronics has been analyzed against Single Event Effects, Total Ionizing Dose and Displacement Damage. [...]
2023. - 8 p.
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2023-12-01
07:04 |
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Optimizing large data transfers for the ALICE experiment in Run 3
/ Weisz, Sergiu (Bucharest, Polytechnic Inst.) ; Grigoras, Costin (CERN) ; Șuiu, Alice-Florența (Bucharest, Polytechnic Inst.) ; Betev, Latchezar (CERN) ; Carabaș, Mihai (Bucharest, Polytechnic Inst.) ; Țăpuș, Nicolae (Bucharest, Polytechnic Inst.)
The physics programme and scope of HEP experiments natu-rally grow with time, thus the computing requirements, both CPU and storage, increase. [...]
2023. - 8 p.
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