CERN Accelerating science

Published Articles

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2020-03-31
17:11
A new quench detection method for HTS magnets: stray-capacitance change monitoring / Ravaioli, E (CERN ; LBNL, Berkeley) ; Davis, D (LBNL, Berkeley ; Natl. High Mag. Field Lab.) ; Marchevsky, M (LBNL, Berkeley) ; Sabbi, GL (LBNL, Berkeley) ; Shen, T (LBNL, Berkeley) ; Verweij, A (CERN) ; Zhang, K (LBNL, Berkeley ; PSI, Villigen)
Fast quench detection is a key requirement for the successful implementation of superconducting magnet technology. In high temperature superconductor magnets, this issue is especially challenging due to the low quench propagation velocity, and presently represents one of the main factors limiting their application. [...]
2019 - 12 p. - Published in : Phys. Scr. 95 (2019) 015002

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2020-03-29
18:03
Achieving Picosecond-Level Phase Stability in Timing Distribution Systems With Xilinx Ultrascale Transceivers / Mendes, Eduardo (CERN) ; Baron, Sophie (CERN) ; Soos, Csaba (CERN) ; Troska, Jan (CERN) ; Novellini, Paolo (IFP, Milan)
This article discusses the challenges posed on the field-programmable gate array (FPGA) transceivers in terms of phase-determinism requirements for timing distribution at the Large Hadron Collider (LHC) experiments. Having a fixed phase after startups is a major requirement, and the typical phase variations observed in the order of tens of picoseconds after startups while using the state-of-the-art design techniques are no longer sufficient. [...]
2020 - 9 p. - Published in : IEEE Trans. Nucl. Sci. 67 (2020) 473-481 Fulltext from publisher: PDF;

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2020-03-29
18:03
Shunt Regulator for the Serial Powering of the ATLAS CMOS Pixel Detector Modules / Habib, A (Marseille, CPPM) ; Barbero, M (Marseille, CPPM) ; Barrillon, P (Marseille, CPPM) ; Bhat, S (Marseille, CPPM) ; Kugathasan, T (CERN) ; Pangaud, P (Marseille, CPPM) ; Pernegger, H (CERN) ; Snoeys, W (CERN)
A shunt regulator was designed to meet the specifications for the serial powering of the CMOS pixel detector modules in compatibility with the next upgrade of the ATLAS detector. Serial powering greatly increases the system's power efficiency when compared to a parallel powering scheme and allows for significant material budget savings in the power cabling. [...]
2020 - 9 p. - Published in : IEEE Trans. Nucl. Sci. 67 (2020) 455-463

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2020-03-29
18:03
Hyperfine anomaly in gold and magnetic moments of ${I}^{\pi}=11/{2}^{-}$ gold isomers / Barzakh, A E (Kurchatov Inst., Moscow) ; Atanasov, D (Heidelberg, Max Planck Inst.) ; Andreyev, A N (York U., England ; JAERI, Tokai) ; Al Monthery, M (York U., England) ; Althubiti, N A (Manchester U. ; Al Jouf U.) ; Andel, B (Leuven U. ; Comenius U.) ; Antalic, S (Comenius U.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Cocolios, T E (Leuven U. ; Manchester U.) ; Cubiss, J G (York U., England) et al.
Hyperfine-structure constants for the 6s2S1/2 and 6p2P1/2 atomic states of the Iπ=11/2− gold isomers Aum177,191,193,195 have been measured at CERN-ISOLDE, using the in-source laser resonance-ionization spectroscopy technique. From the measured hyperfine constants the differences between hyperfine anomalies for these atomic states have been deduced. [...]
2020 - 9 p. - Published in : Phys. Rev. C 101 (2020) 034308 Fulltext from publisher: PDF;

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2020-03-29
18:03
Feasibility Study for NITE SiC/SiC as the Target Material for Pions/Muons Production at High-Power Proton Accelerator Facilities / Makimura, Shunsuke (J-PARC) ; Park, Joon-Soo (Muroran Inst. Tech.) ; Sato, Akira (Osaka U. (main)) ; Matoba, Shiro (J-PARC) ; Kawamura, Naritoshi (J-PARC) ; Yamazaki, Takayuki (J-PARC) ; Ninomiya, Kazuhiko (Osaka U. (main)) ; Tomono, Dai (Osaka U., Res. Ctr. Nucl. Phys.) ; Nakazato, Naofumi (Muroran Inst. Tech.) ; Calviani, Marco (CERN) et al.
The feasibility study for Nano-Infiltration and Transient Eutectic phase process SiC/SiC (NITE SiC/SiC)NITE SiC/SiC as a potential novel target material for pions/muons production at high-power proton accelerators facilities is in progress. Compared with graphite that is the principal target material for pions/muons production, higher transport efficiency and higher oxidation resistance can be expected. [...]
2020 - 6 p. - Published in : JPS Conf. Proc. 28 (2020) 031005 Fulltext: PDF;
In : 14th International Workshop on Spallation Materials Technology, Fukushima, Japan, 11 - 17 Nov 2018, pp.031005

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2020-03-29
18:03
Ethernet Embedded Readout Interface for Timepix2—Katherine readout for Timepix2 / Burian, P (Pilsen U. ; Prague, Tech. U.) ; Broulím, P (Pilsen U.) ; Bergmann, B (Prague, Tech. U.) ; Tlustos, L (CERN ; Prague, Tech. U. ; Freiburg U. ; U. Houston (main))
This paper introduces a readout system for the Timepix2. Firstly, this chip is described and the readout modes are discussed in detail. [...]
2020 - 17 p. - Published in : JINST 15 (2020) C01037
In : 21st International Workshop on Radiation Imaging Detectors, Kolympari, Chania, Greece, 7 - 12 Jul 2019, pp.C01037

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2020-03-29
18:03
The Interaction of Neutrons with 7Be at BBN Temperatures: Lack of Standard Nuclear Solution to the “Primordial 7Li Problem” / Gai, M (Connecticut U. LNS Avery Point Groton) ; Kading, E E (Connecticut U. LNS Avery Point Groton) ; Hass, M (Weizmann Inst.) ; Nollett, K M (San Diego State U.) ; Stern, S R (Connecticut U. LNS Avery Point Groton) ; Stora, Th (CERN) ; Weiss, A (Bar Ilan U. ; Hebrew U.)
We report the first measurement of alpha-particles from the interaction of neutrons with 7Be at “temperatures” of Big Bang Nucleosynthesis (BBN). We measured the Maxwellian averaged cross sections (MACS), with neutron beams produced by the LiLiT at the SARAF in Israel (with kT = 49.5 keV hence 0.57 GK). [...]
2020 - 7 p. - Published in : EPJ Web Conf. 227 (2020) 01007 Fulltext: PDF;
In : 10th European Summer School on Experimental Nuclear Astrophysics, Catania, Italy, 16 - 23 June 2019, pp.01007

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2020-03-29
18:03
Enabling Data Intensive Science on Supercomputers for High Energy Physics R&D; Projects in HL-LHC Era / Klimentov, Alexei (Brookhaven) ; Benjamin, Douglas (Argonne (main)) ; Di Girolamo, Alessandro (CERN) ; De, Kaushik (Texas U., Arlington) ; Elmsheuser, Johannes (Brookhaven) ; Filipcic, Andrej (Stefan Inst., Ljubljana) ; Kiryanov, Andrey (St. Petersburg, INP ; Moscow State U.) ; Oleynik, Danila (Dubna, JINR) ; Wells, Jack C (Oak Ridge) ; Zarochentsev, Andrey (St. Petersburg State U. ; Moscow State U.) et al. /ATLAS
The ATLAS experiment at CERN’s Large Hadron Collider uses the Worldwide LHC Computing Grid, the WLCG, for its distributed computing infrastructure. Through the workload management system PanDA and the distributed data management system Rucio, ATLAS provides seamless access to hundreds of WLCG grid and cloud based resources that are distributed worldwide, to thousands of physicists. [...]
2020 - 8 p. - Published in : EPJ Web Conf. 226 (2020) 01007 Fulltext: PDF;
In : Conference on Mathematical Modeling and Computational Physics, Stará Lesná, Slovakia, 1 - 5 July 2019, pp.01007

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2020-03-29
18:03
International Axion Observatory (IAXO) status and prospects / Lakić, Biljana (Boskovic Inst., Zagreb) /IAXO
International Axion Observatory (IAXO) is a new generation axion helioscope aiming to search for solar axions and axion-like particles (ALPs) with a signal to background ratio of about 5 orders of magnitude higher than the one achieved by currently the most sensitive axion helioscope, CAST. IAXO relies on large improvements in magnetic field volume and extensive use of X-ray focusing optics combined with low-background detectors. [...]
2020 - 5 p. - Published in : J. Phys. : Conf. Ser. 1342 (2020) 012070 Fulltext: PDF;
In : 15th International Conference on Topics in Astroparticle and Underground Physics, Sudbury, Ontario, Canada, 24 - 28 July 2017, pp.012070

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2020-03-29
18:03
Gravity and antimatter: the AEgIS experiment at CERN / Pagano, D (INFM, Brescia ; INFN, Pavia) ; Aghion, S (Bergen U. ; INFN, Milan) ; Amsler, C (Stefan Meyer Inst. Subatomare Phys.) ; Bonomi, G (INFM, Brescia ; INFN, Pavia) ; Brusa, R S (Trento U. ; TIFPA-INFN, Trento) ; Caccia, M (INFN, Milan ; Insubria U., Como) ; Caravita, R (CERN) ; Castelli, F (INFN, Milan ; Milan U.) ; Cerchiari, G (Heidelberg, Max Planck Inst.) ; Comparat, D (LAC, Orsay) et al.
From the experimental point of view, very little is known about the gravitational interaction between matter and antimatter. In particular, the Weak Equivalence Principle, which is of paramount importance for the General Relativity, has not yet been directly probed with antimatter. [...]
2020 - 5 p. - Published in : J. Phys. : Conf. Ser. 1342 (2020) 012016 Fulltext: PDF;
In : 15th International Conference on Topics in Astroparticle and Underground Physics, Sudbury, Ontario, Canada, 24 - 28 July 2017, pp.012016

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