2025-05-15
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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
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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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2025-05-14
07:01 |
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2025-05-14
07:01 |
Evaluation of SmartNIC Devices for Use in Trigger and Data Acquisition Systems
/ Berg, Andreas Klavenes (CERN ; Norwegian U. Sci. Tech.) ; Abed Abud, Adam (CERN) ; Gamberini, Enrico (CERN) ; Poulsen, Anders Hjelm (Unlisted, NL) ; Khartchenko, Evgueny (Unlisted, UK) ; Lehmann Miotto, Giovanna (CERN) ; McKenzie, Graham (Altera, UK) ; Sipos, Roland (CERN) ; Zheng, Jeff (Unlisted, IL)
This article presents an evaluation of SmartNIC devices in the context of Trigger and Data AcQuisition (TDAQ) systems. SmartNIC devices represent an emerging technology whose aim is to offload network tasks and infrastructure control plane software from the CPU. [...]
2025 - 9 p.
- Published in : IEEE Trans. Nucl. Sci. 72 (2025) 355-363
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2025-05-14
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2025-05-14
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2025-05-14
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2025-05-14
07:01 |
Design and optimizations of electrostatic low energy intense beam transport for H$^{-}$ ion source in LINAC4 at CERN
/ Jakhar, Niketan (Nehru U.) ; Kumar, Sarvesh (IUAC, New Delhi) ; Thakur, Chandan (Nehru U.) ; Kashyap, Sandeep (Amity U., Sch. Eng. Tech. ; Indian Inst. Tech., New Delhi) ; Sharma, Jyotsna (Delhi Tech. U.) ; Kashyap, Manish K (Nehru U.) ; Lombardi, Alessandra (CERN)
Abstract
The electrostatic low energy beam transport (ELEBT) is used
to handle low energy and intense beams from ion sources. It is
preferred over magnetostatic low energy beam transport (MLEBT) for
many reasons such as compactness, no space charge compensation and
no transverse phase space coupling, more beam current handling
capacity and less emittance growth as well as beam losses. [...]
2025 - 18 p.
- Published in : JINST 20 (2025) P03015
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2025-05-14
07:01 |
Electron correlation and relativistic effects in the excited states of radium monofluoride
/ Athanasakis-Kaklamanakis, M (CERN ; Leuven U. ; Imperial Coll., London) ; Wilkins, S G (MIT ; MIT, LNS) ; Skripnikov, L V (Unlisted) ; Koszorús, Á (CERN ; Leuven U.) ; Breier, A A (Berlin, Tech. U. ; Kassel U.) ; Ahmad, O (Leuven U.) ; Au, M (Unlisted, CH ; Mainz U.) ; Bai, S W (Peking U., SKLNPT) ; Belošević, I (TRIUMF) ; Berbalk, J (Leuven U.) et al.
Highly accurate and precise electronic structure calculations of heavy radioactive atoms and their molecules are important for several research areas, including chemical, nuclear, and particle physics. Ab initio quantum chemistry can elucidate structural details in these systems that emerge from the interplay of relativistic and electron correlation effects, but the large number of electrons complicates the calculations, and the scarcity of experiments prevents insightful theory-experiment comparisons. [...]
2025 - 11 p.
- Published in : Nature Commun. 16 (2025) 2139
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