CERN Accelerating science

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1.

CMS-PHO-TRIDAS-2025-001
© 2025 CERN, for the benefit of the CMS Collaboration
New DAQ server room at CMS P5 for Hi-Lumi
Photographs taken on 25th July 2025 of the new DAQ [...]
25/07/2025
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2.
Design Enhancements of the MBRD Magnet for the High Luminosity LHC: The Ongoing Status of the Series Production / Pampaloni, A (INFN, Genoa) ; Angius, S (ASG Supercond., Genova) ; Bersani, A (INFN, Genoa) ; Caiffi, B (INFN, Genoa) ; Fabbricatore, P (INFN, Genoa) ; Farinon, S (INFN, Genoa) ; Fiscarelli, L (CERN) ; Foussat, A (CERN) ; Levi, F (INFN, Genoa) ; Novelli, D (INFN, Genoa ; Rome U.) et al.
The upcoming enhancement for the Large Hadron Collider (LHC), known as the High-Luminosity LHC, is designed to increase the collision rate of the accelerator by a factor of ten. This ambitious objective entails the replacement of the dipole and quadrupole magnets situated before and after the interaction region of the ATLAS and CMS experiments. [...]
2025 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 35 (2025) 4002405
3.
LUCID, the ATLAS luminosity detector in LHC Run-3 and its upgrade for HL-LHC / Lasagni Manghi, Federico (Universita e INFN, Bologna (IT)) ; ATLAS LUCID Collaboration /ATLAS Collaboration
The LUCID-2 detector is the main luminometer of the ATLAS experiment and the only one able to provide a reliable luminosity determination in all beam configurations, luminosity ranges and at bunch-crossing level. During LHC Run-2 ATLAS has measured luminosity with a precision of 0.8%, the most precise ever among all experiments running at a hadron collider. [...]
ATL-FWD-SLIDE-2025-354.- Geneva : CERN, 2025 - 23 p. Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : 2025 European Physical Society Conference on High Energy Physics (EPS-HEP 2025), Marseille, Fr, 7 - 11 Jul 2025
4.

OPEN-PHO-ACCEL-2025-022
© 2025 CERN
Second HL-LHC Cold Powering System validated
The second Cold Powering System for the HL-LHC was [...]
18-07-2025
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5.

OPEN-PHO-ACCEL-2025-021
When using these photos, credit should be given to each photographer.
Winners of CERN Photowalk 2025
Gagnants de la compétition CERN Photowalk 2025

On 27 May, CERN opened its doors to 17 photographe [...]
16-07-2025
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6.
Precise time and energy measurement with a homogeneous electromagnetic calorimeter / Kovač, Marko (Split U.) /CMS Collaboration
The CMS experiment at the LHC has been running for 16 years, precisely measuring the energy of electrons and photons in high-energy collisions using a homogeneous electromagnetic calorimeter (ECAL). The PbWO4 crystal calorimeter operates in a challenging radiation environment at high event rates, requiring continuous response corrections and specialized techniques to mitigate the effects of pileup. [...]
2025 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1080 (2025) 170639
In : 17th Vienna Conference on Instrumentation (VCI2025), Vienna, Austria, 17 - 21 Feb 2025, pp.170639
7.
Characterization and beam test measurements of CMS Phase-2 luminometers / Kadlecsik, Á (Eotvos U.) ; Auzinger, G (CERN) ; Bakhshiansohi, H (Isfahan Tech. U.) ; Dabrowski, A E (CERN) ; Delannoy, A G (Tennessee U.) ; Dalavi, V (Isfahan Tech. U.) ; Dienemann, N (CERN ; Hochschule, Eng. Econ., Karlsruhe) ; Dragicevic, M (Vienna, OAW) ; Garcia, M F (Unlisted, ES) ; Guthoff, M (DESY) et al.
The physics program of the HL-LHC requires high-precision (≲1%) luminosity determination. Two new luminosity detectors are being developed by the CMS BRIL (Beam Radiation, Instrumentation, and Luminosity) project: the Fast Beam Condition Monitor (FBCM), a standalone detector with unique timing capabilities, and the Tracker Endcap Pixel (TEPX) detector augmented with real-time cluster reconstruction in the FPGA of a dedicated back-end board at 10% of the full level-1 trigger rate. [...]
2025 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1080 (2025) 170663
In : 17th Vienna Conference on Instrumentation (VCI2025), Vienna, Austria, 17 - 21 Feb 2025, pp.170663
8.

OPEN-PHO-ACCEL-2025-019
© 2025 CERN
People working on the IT String
A selection of photos showing recent work being do [...]
16-06-2025
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9.

OPEN-PHO-ACCEL-2025-018
© 2025 CERN
IT String magnet line completed
Recent photos showing the current status of the IT [...]
10-06-2025
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10.

OPEN-PHO-ACCEL-2025-017
© 2025 CERN
First BPM for the HL-LHC finished
This collection shows the first HL-LHC beam positi [...]
26-05-2025
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