2023-12-01
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2023-12-01
07:04 |
Comparison of Two Detector Magnetic Systems for the Future Circular Hadron-Hadron Collider
/ Klyukhin, Vyacheslav (SINP, Moscow ; CERN) ; Ball, Austin (CERN) ; Berriaud, Christophe Paul (IRFU, Saclay) ; Curé, Benoit (CERN) ; Dudarev, Alexey (CERN) ; Gaddi, Andrea (CERN) ; Gerwig, Hubert (CERN) ; Hervé, Alain (Wisconsin U., Madison) ; Mentink, Matthias (CERN) ; Riegler, Werner (CERN) et al.
This work describes a detailed study of two possible options for the magnetic system of a Future Circular hadron-hadron Collider detector.The conceptual design study of a Future Circular hadron-hadron Collider (FCC-hh) to be constructed at CERN with a center-of-mass energy of the order of 100 TeV requires superconducting magnetic systems with a central magnetic flux density of an order of 4 T for the experimental detectors. The developed concept of the FCC-hh detector involves the use of an iron-free magnetic system consisting of three superconducting solenoids. [...]
2023 - 11 p.
- Published in : Appl. Sciences 13 (2023) 10387
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2023-12-01
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Ab initio study of electronic states and radiative properties of the AcF molecule
/ Skripnikov, Leonid V (St. Petersburg, INP ; St. Petersburg State U.) ; Oleynichenko, Alexander V (St. Petersburg, INP) ; Zaitsevskii, Andréi (St. Petersburg, INP ; Moscow State U.) ; Mosyagin, Nikolai S (St. Petersburg, INP) ; Athanasakis-Kaklamanakis, Michail (CERN ; Leuven U.) ; Au, Mia (CERN) ; Neyens, Gerda (Leuven U.)
Relativistic coupled-cluster calculations of the ionization potential, dissociation energy, and excited electronic states under 35 000 cm−1 are presented for the actinium monofluoride (AcF) molecule. The ionization potential is calculated to be IPe = 48 866 cm−1, and the ground state is confirmed to be a closed-shell singlet and thus strongly sensitive to the T,P-violating nuclear Schiff moment of the Ac nucleus. [...]
2023 - 16 p.
- Published in : J. Chem. Phys. 159 (2023) 124301
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2023-12-01
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Measurements of binding energies and electromagnetic moments of silver isotopes – A complementary benchmark of density functional theory
/ de Groote, R P (Jyvaskyla U. ; Leuven U.) ; Nesterenko, D A (Jyvaskyla U.) ; Kankainen, A (Jyvaskyla U.) ; Bissell, M L (Manchester U.) ; Beliuskina, O (Jyvaskyla U.) ; Bonnard, J (York U., England ; IP2I, Lyon) ; Campbell, P (Manchester U.) ; Canete, L (Jyvaskyla U.) ; Cheal, B (Liverpool U.) ; Delafosse, C (Jyvaskyla U.) et al.
We report on a set of high-precision measurements of nuclear binding and excitation energies, as well as nuclear spins, magnetic dipole and electric quadrupole moments of neutron-rich silver isotopes, 113−123Ag. The measurements were performed using the JYFLTRAP mass spectrometer and the collinear laser spectroscopy beamline at the Ion Guide Isotope Separator On-Line (IGISOL) facility. [...]
2023 - 6 p.
- Published in : Phys. Lett. B 848 (2024) 138352
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2023-12-01
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Muography
/ Tanaka, Hiroyuki K M (Tokyo U.) ; Bozza, Cristiano (Salerno U.) ; Bross, Alan (Fermilab) ; Cantoni, Elena (INFN, Turin) ; Catalano, Osvaldo (IASF, Palermo) ; Cerretto, Giancarlo (INFN, Turin) ; Giammanco, Andrea (Louvain U.) ; Gluyas, Jon (Durham U.) ; Gnesi, Ivan (Enrico Fermi Ctr., Rome ; Frascati ; CERN) ; Holma, Marko (Oulu U.) et al.
Muography takes advantage of the specific properties of cosmic-ray
muons, relativistic leptons that are much heavier than electrons.
Cosmic-ray muons have strong penetrating power and a relativistic
nature, which means they can be used in a range of technologies,
including imagery; positioning, navigation, timing (PNT); and secured
communication in environments where conventional techniques are
unavailable. As cosmic-ray muons are universally present on Earth,
muographic measurements can be conducted in the same manner
across the globe. [...]
2023
- Published in : Nature Reviews Methods Primers 3 (2023) 88
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2023-12-01
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2023-12-01
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An ultra-low power 10-bit, 50 MSps SAR ADC for multi-channel readout ASICs
/ Firlej, Mirosław (AGH-UST, Cracow) ; Fiutowski, Tomasz (AGH-UST, Cracow) ; Idzik, Marek (AGH-UST, Cracow) ; Kulis, Szymon (CERN) ; Moroń, Jakub (AGH-UST, Cracow) ; Świentek, Krzysztof (AGH-UST, Cracow)
The design and measurement results of a fast, ultra-low power, small area 10-bit SAR ADC, developed for multi-channel readout systems, in particular for applications in particle physics experiments, are discussed. A prototype ASIC was designed and fabricated in 130 nm CMOS technology and a wide spectrum of static (INL<0.4 LSB, DNL<0.3 LSB) and dynamic (ENOB=9.45) measurements was performed to study and quantify the performance of ADC.The ADC converts analogue signals with a sampling frequency up to 55 MHz and power consumption below 1 mW.The ADC works asynchronously, so no external clock is required. [...]
2023 - 16 p.
- Published in : JINST 18 (2023) P11013
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2023-12-01
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Design and performance of a novel compact high-effectiveness transparent-wall counter-flow heat exchanger fabricated using additive manufacturing
/ Onufrena, A (CERN ; ESTEC, Noordwijk ; Twente U. Tech., Enschede) ; Koettig, T (CERN) ; Naydenov, B (CERN) ; Bremer, J (CERN) ; Tirolien, T (ESTEC, Noordwijk) ; ter Brake, H J M (Twente U. Tech., Enschede)
Compact high-effectiveness counter-flow heat exchangers (CFHEX) are an essential building block of remote
cooling systems and Reverse Turbo-Brayton coolers. This technology enables a wide variety of on-ground and
space applications, including the cooling of infrared detectors, cryogenic chains of quantum computers and
ultra-sensitive superconducting SQUID sensors. [...]
2024 - 18 p.
- Published in : Int. J. Heat Mass Transf. 218 (2024) 124726
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2023-12-01
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Prototype Design of Global Common Module for ATLAS Experiment’s Phase-II Upgrade
/ Tang, S (Brookhaven) ; Bonini, F (Brookhaven ; CERN) ; Begel, M (Brookhaven) ; Benoit, M (Brookhaven ; Oak Ridge) ; Chen, H (Brookhaven) ; Filimonov, V (Mainz U., Inst. Phys.) ; Lucca, F (Buenos Aires, CONICET) ; Matakias, D (Brookhaven) ; Qian, W (Rutherford) ; Sankey, D (Rutherford) et al.
A new Global Trigger subsystem will be installed in the Level-0 Trigger as part of the High-Luminosity Large Hadron Collider (HL-LHC) upgrade of ATLAS during the upcoming Long-Shutdown 3. It will feature new and improved trigger hardware and algorithms, and an increased maximum output rate of 1 MHz. [...]
2023 - 8 p.
- Published in : IEEE Trans. Nucl. Sci. 70 (2023) 2248-2255
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2023-11-30
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