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2025-07-19
09:21
Transient simulations of MAPS using TCAD, Allpix squared & SPICE / Mendes, Larissa (DESY) ; Dannheim, Dominik (CERN) ; Del Rio Viera, Manuel (DESY) ; Dort, Katharina (CERN) ; Eckstein, Doris (DESY) ; King, Finn (DESY) ; Gregor, Ingrid-Maria (DESY) ; He, Yajun (DESY) ; Huth, Lennart (DESY) ; Lachnit, Stephan (DESY) et al.
Monolithic Active Pixel Sensors (MAPS) designed in a 65 nm CMOS imaging technology are an alternative to hybrid pixel sensors as they eliminate the demand for flip-chip bonding while reducing material budget through thinner active sensor layers. The TANGERINE project aims to create a 65 nm MAPS sensor with a small collection electrode for use in future lepton colliders and beam telescopes. [...]
2025 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1080 (2025) 170749
In : 17th Vienna Conference on Instrumentation (VCI2025), Vienna, Austria, 17 - 21 Feb 2025, pp.170749

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2025-07-19
09:21
Performance and operational experience of ALICE ITS2 in LHC Run 3 / Liu, J (Liverpool U.) /ALICE Collaboration
The ALICE experiment underwent major upgrades during the LHC Long Shutdown 2 (2019–2021), including the installation of the new Inner Tracking System (ITS2). ITS2 comprises seven layers with 12.5 billion pixels covering 10 m^2, based on the ALPIDE CMOS Monolithic Active Pixel Sensors (MAPS), which offer a spatial resolution of approximately 5 µm. [...]
2025 - 9 p. - Published in : JINST 20 (2025) C07021 Fulltext: PDF;
In : 20th Anniversary Trento Workshop on Advanced Silicon Radiation Detectors, Trento, 4 - 6 Feb, pp.C07021

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2025-07-19
09:21
Measurement of collective flow of D$^0$ mesons in heavy-ion collisions at CMS / Saha, Nihar Ranjan (Indian Inst. Tech., Madras) /CMS Collaboration
The quark–gluon plasma (QGP) modifies the dynamics of heavy quarks, impacting their azimuthal distributions and transverse momentum ($\mathrm{p}_r$) spectra. Consequently, the azimuthal anisotropy coefficients ($v_n$) and nuclear modification factors ($R_{AA}$) of heavy-flavor hadrons serve as key observables for exploring QGP properties. [...]
2025 - 3 p. - Published in : J. Subatomic Part. Cosmol. 4 (2025) 100095
In : The 10th Asian Triangle Heavy-Ion Conference, Berhampur, Odisha, India, 13 - 16 Jan 2025, pp.100095

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2025-07-18
06:06
Event Classification in Heterostructured Scintillators With Limited Readout Information Using Neural Networks / Lowis, Carsten (CERN ; RWTH Aachen U.) ; Pagano, Fiammetta (CERN ; Milan Bicocca U. ; Unlisted, ES) ; Pizzichemi, Marco (CERN ; Milan Bicocca U.) ; Langen, Karl-Josef (RWTH Aachen U.) ; Ziemons, Karl (FH Aachen (main)) ; Auffray, Etiennette (CERN)
To improve coincidence time resolution (CTR) in time-of-flight positron emission tomography (TOF-PET), various approaches have been explored, including the use of novel materials like heterostructured scintillators. These scintillators combine different materials with complementary properties like Bismuth Germanate for its high detection efficiency and EJ232 for fast timing. [...]
2025 - 6 p. - Published in : IEEE Trans. Rad. Plasma Med. Sci. 9 (2025) 756-761 document.pdf: PDF; External link: Fulltext

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2025-07-18
06:06
Simulation of CMOS strip sensors / Davis, Naomi (DESY) ; Arling, Jan-Hendrik (DESY) ; Baselga, Marta (Dortmund U.) ; Diehl, Leena (Freiburg U. ; CERN) ; Dingfelder, Jochen (Bonn U.) ; Gregor, Ingrid-Maria (DESY) ; Hauser, Marc (Freiburg U.) ; Hügging, Fabian (Bonn U.) ; Jakobs, Karl (Freiburg U.) ; Karagounis, Michael (Applied Sci. U., Dortmund) et al.
In high-energy physics, there is a need to investigate silicon sensor concepts that offer large-area coverage and cost-efficiency for particle tracking detectors. Sensors based on CMOS imaging technology present a promising alternative silicon sensor concept. [...]
2025 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1080 (2025) 170807 Fulltext: PDF;

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2025-07-18
06:06
Characterization of the FBK-LGAD devices manufactured at an external foundry for large-volume productions / CMS Collaboration
In recent years, the HEP detector community has shown an increasing interest in Low Gain Avalanche Diodes (LGADs) due to their excellent temporal resolution, good radiation resistance, and low material budget. An example of this is the upcoming CMS Endcap Timing Layer (ETL), a subdetector which will feature four disks (14 m$^{2}$) covered with these devices.In this context, Fondazione Bruno Kessler (FBK), one of the qualified producers of the ETL LGAD sensors, has recently initiated a technology transfer of the FBK-LGAD technology to an external CMOS foundry (LFoundry) in order to enable a larger and cost-effective production.The first prototype run from LFoundry was produced in May 2024. [...]
2025 - 9 p. - Published in : JINST 20 (2025) C07039 Fulltext: PDF;

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2025-07-18
06:06
Search for Quasiparticle Scattering in the Quark-Gluon Plasma with Jet Splittings in pp and Pb-Pb Collisions at sNN=5.02  TeV / ALICE Collaboration
The ALICE Collaboration reports measurements of the large relative transverse momentum (kT) component of jet substructure in pp and Pb-Pb collisions at center-of-mass energy per nucleon pair sNN=5.02  TeV. Enhancement in the yield of such large-kT emissions in head-on Pb-Pb collisions is predicted to arise from partonic scattering with quasiparticles of the quark-gluon plasma. [...]
2025 - 17 p. - Published in : Phys. Rev. Lett. 135 (2025) 031901 Fulltext: PDF;

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2025-07-18
06:05
Isolating new physics signatures of vectorlike quarks and heavy Higgses over multi b-jet backgrounds / Lunghi, Enrico (Indiana U. ; CERN) ; Pazar, Beni (Indiana U.)
We discuss models in which vectorlike quarks and a second Higgs doublet are simultaneously present and couple to the third generation of SM quarks. A general feature of these models is that cascade decays of vectorlike fermions into heavy Higgses (or vice versa, depending on their masses) dominate their respective branching ratios. [...]
arXiv:2409.12763.- 2025 - 26 p. - Published in : Eur. Phys. J. C 85 (2025) 748 Fulltext: document - PDF; 2409.12763 - PDF;

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2025-07-18
06:05
Quantifying the Heat Load to Conductors Due to Strain Energy Release in CTD-101 K Magnet Impregnant / van Steenlandt, Jan (Twente U., Enschede) ; Kario, Anna (Twente U., Enschede) ; Otten, Simon (Twente U., Enschede) ; Warnet, Laurent (Twente U., Enschede) ; Wessel, Sander (Twente U., Enschede) ; ten Kate, Herman (Twente U., Enschede) ; van Oort, Hans (Twente U., Enschede)
State-of-the-art Nb3Sn superconducting accelerator magnets are still prone to lengthy training. This study investigates whether direct heat from fractures in commonly used magnet impregnant is sufficient to cause the instabilities during training. [...]
2025 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 35 (2025) 1-7 document.pdf: PDF; External link: Fulltext

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2025-07-18
06:05
TCAD and charge transport simulations of MAPS in 65 nm for the ALICE ITS3 / Sanna, I (Munich, Tech. U. ; CERN) ; Lemoine, C (CERN ; Strasbourg, IPHC) ; Borghello, G (CERN) ; Snoeys, W (CERN) /ALICE Collaboration
As part of the upgrade to the Inner Tracking System 3 (ITS3) for ALICE and the strategicR&D; programme of the CERN EP department, stitched Monolithic Active Pixel Sensors (MAPS) arebeing developed using a 65 nm CMOS imaging process. Several sensor prototypes were characterizedin laboratory using radioactive sources, particularly the $^{55}$Fe source, which was extensivelyused. [...]
2025 - 7 p. - Published in : JINST 20 (2025) C06032 Fulltext: PDF;
In : 11th International Workshop on Semiconductor Pixel Detectors for Particles and Imaging (PIXEL 2024), Strasbourg, France, 18 - 22 Nov 2024, pp.C06032

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