2025-05-15
06:02 |
First Measurement of A=4 Hypernuclei and Antihypernuclei at the LHC
/ ALICE Collaboration
In this Letter, the first evidence of the $\overline{{}^4_\Lambda\mathrm{He}}$ antihypernucleus is presented, along with the first measurement at the LHC of the production of (anti)hypernuclei with mass number $A = 4$, specifically (anti)$^4_\Lambda \mathrm{H}$ and (anti)$^4_\Lambda \mathrm{He}$. In addition, the antiparticle-to-particle ratios for both hypernuclei ($\overline{{}^4_\Lambda \mathrm{H}} / {}^4_\Lambda \mathrm{H}$ and $\overline{{}^4_\Lambda\mathrm{He}} / {}^4_\Lambda\mathrm{He}$) are shown, which are sensitive to the baryochemical potential of the strongly interacting matter created in heavy-ion collisions. [...]
2025 - 16 p.
- Published in : Phys. Rev. Lett. 134 (2025) 162301
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2025-05-15
06:02 |
What makes digital learning effective? Evaluation of a digital learning module about positron emission tomography
/ Chatzidaki, Panagiota (Uppsala U.) ; Eriksson, Urban (Uppsala U.) ; Zoechling, Sarah (CERN) ; Schmeling, Sascha (CERN) ; Fredlund, Tobias (Gavle U.)
Following the global COVID-19 pandemic, digital learning environments have gained in importance in education all around the world. A new digital learning format called a “Digital Learning Module” (DLM) was developed within the Physics Education Research (PER) group at CERN, consisting of a series of prerecorded explanatory and experiment videos, interactive elements, an interactive simulation experiment, and expert interviews. [...]
2025 - 24 p.
- Published in : Phys. Rev. Phys. Educ. Res. 21 (2025) 010143
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2025-05-15
06:02 |
Compound-Nucleus and Doorway-State Decays of $\beta$-delayed Neutron Emitters $^{51, 52, 53}\mathrm{K}$
/ Xu, Z Y (Tennessee U.) ; Grzywacz, R (Tennessee U. ; Oak Ridge) ; Gottardo, A (IJCLab, Orsay ; INFN, Legnaro) ; Madurga, M (Tennessee U.) ; Alonso, I M (Madrid, Inst. Estructura Materia) ; Andreyev, A N (JAERI, Tokai ; York U., England) ; Benzoni, G (INFN, Milan) ; Borge, M J G (Madrid, Inst. Estructura Materia) ; Cap, T (NCBJ, Warsaw) ; Costache, C (Bucharest, IFIN-HH) et al.
We investigated decays of $^{51, 52, 53}\mathrm{K}$ at the ISOLDE Decay Station at CERN in order to understand the mechanism of the $\beta$-delayed neutron-emission ($\beta n$) process. The experiment quantified neutron and $\gamma$-ray emission paths for each precursor [...]
2024 - 7 p.
- Published in : Phys. Rev. Lett. 133 (2024) 042501
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2025-05-15
06:02 |
Analysis of AC Losses Due to Current Ripple in MgB- Wires With Helicoidal Transformation Method
/ Soldati, Luca (Genoa U.) ; Dular, Julien (CERN) ; Breschi, Marco (Bologna U.) ; Spina, Tiziana (ASG Supercond., Genova) ; Bruzek, Christian-Eric (ASG Supercond., Genova)
Magnesium diboride (MgB$_{2}$) presents a promising solution for efficient, reliable, and cost-effective long-distance direct current (DC) power transmission. Its low cost, high critical temperature ($39 \,\mathrm{K}$), and compatibility with liquid hydrogen cooling are particularly advantageous. [...]
2025 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 35 (2025) 5901105
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2025-05-15
06:02 |
Integration of the FastIC front-end electronics into the Picosec MicroMegas detector
/ Scharenberg, L (CERN) ; Alozy, J (CERN) ; Angelis, Y (Aristotle U., Thessaloniki) ; Aune, S (IRFU, Saclay) ; Ballabriga, R (CERN) ; Bortfeldt, J (Munich U.) ; Brunbauer, F (CERN) ; Brunoldi, M (Pavia U. ; INFN, Pavia) ; Campbell, M (CERN) ; Datta, J (SUNY, Stony Brook) et al.
The Picosec MicroMegas collaboration aims to develop gaseous fast-timing detectors; experimentally, intrinsic time resolutions from around 50ps to better than 20ps are obtained, depending on the exact detector configuration. Parts of developments focus on exploring various options of fast-timing multi-channel front-end electronics, to meet the data processing demands of experimental applications. [...]
2025 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1076 (2025) 170496
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2025-05-15
06:02 |
Consolidated 2D Mechanical Design and Preliminary 3D Design Phase of the Superconducting Ion Gantry (SIG) Dipole for Hadrontherapy
/ Bianchi, E (INFN, Genoa) ; Farinon, S (INFN, Genoa) ; Felcini, E (CNAO, Milan) ; Gagno, A (INFN, Genoa ; U. Genoa) ; Gentini, L (CERN) ; Georgiadis, I (Unlisted, GR) ; Kavoura, E O (Unlisted, GR) ; Kokkinos, C (Unlisted, GR) ; Levi, F (INFN, Genoa) ; Musenich, R (INFN, Genoa) et al.
In ion therapy, gantries play a crucial role in minimizing damage to healthy tissue and enabling treatment from diverse angles. The introduction of superconducting magnets results in a substantial reduction in the overall weight and the power required to operate of these otherwise huge structures. [...]
2025 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 35 (2025) 4001105
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2025-05-15
06:02 |
PENGEOM – A general-purpose geometry package for Monte Carlo simulation of radiation transport in complex material structures (New Version Announcement)
/ Almansa, Julio (Reg. Univ. Hosp. Virgin of the Snows) ; Salvat-Pujol, Francesc (CERN) ; Díaz-Londoño, Gloria (Natl. U. of Columbia, Medellin) ; Carnicer, Artur (Barcelona U.) ; Lallena, Antonio M (Granada U.) ; Salvat, Francesc (Barcelona U.)
A new version of the code system pengeom, which provides a complete set of tools to handle different geometries in Monte Carlo simulations of radiation transport, is presented. The distribution package consists of a set of Fortran subroutines and a Java graphical user interface that allows building and debugging the geometry-definition file, and producing images of the geometry in two- and three dimensions. [...]
2025 - 2 p.
- Published in : Comput. Phys. Commun. 313 (2025) 109634
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2025-05-15
04:04 |
The $^{76}$Cu conundrum remains unsolved
/ IDS Collaboration
Near the doubly-magic nucleus \nuc{Ni}{78} ($Z=28$, $N=50$), there has been a decades-long debate on the existence of a long-lived isomer in \nuc{Cu}{76}. A recent mass measurement claimed to have settled the debate, by measuring the energy of the isomer and shedding light on the structure of the nucleus. [...]
arXiv:2505.06400.-
2025-05-09
- Published in : Phys. Lett. B 9 (2025) 139551
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2025-05-14
07:01 |
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2025-05-14
07:01 |
Studies of F- impurities formation in ALICE MID RPC detectors: A comparison between LHC RUN2 and LHC RUN3
/ Verzeroli, Mattia (IP2I, Lyon) ; Arena, Maria Cristina (Pavia U.) ; Ferretti, Alessandro (U. Turin (main) ; INFN, Turin) ; Gagliardi, Martino (U. Turin (main) ; INFN, Turin) ; Guida, Roberto (CERN) ; Mandelli, Beatrice (CERN) ; Quaglia, Luca (INFN, Turin) ; Rigoletti, Gianluca (CERN) ; Terlizzi, Livia (U. Turin (main) ; INFN, Turin)
The ALICE Muon Identifier (MID) system consists of 72 single-gap Resistive Plate Chamber (RPC) detectors, operated with a gas mixture of C2H2F4, iC4H10, and SF6 at a ratio of 89.7%/10%/0.3%, along with 37% of relative humidity. The combined effects of background irradiation and the electric field within the detector’s gas gap, together with the high concentration of fluorinated gases used, result in the production of F− ions and F-based impurities. [...]
2025
- Published in : Nucl. Instrum. Methods Phys. Res., A 1076 (2025) 170515
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024, pp.170515
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