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CERN Published Articles

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2020-10-17
04:07
Luminosity Performance of the Compact Linear Collider at 380 GeV with Static and Dynamic Imperfections / Gohil, C. (JAI, UK ; CERN) ; Burrows, P.N. (JAI, UK) ; Blaskovic Kraljevic, N. (CERN) ; Latina, A. (CERN) ; Ögren, J. (CERN) ; Schulte, D. (CERN)
The Compact Linear Collider is one of the two main European options for a collider in a post Large Hadron Collider era. This is a linear $e^+e^-$ collider with three centre-of-mass energy stages: 380 GeV, 1.5 TeV and 3 TeV. [...]
arXiv:2009.01184.- 2020-09-02 - 21 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 101001 Fulltext: PDF;

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2020-10-17
04:07
Photoproduction of axionlike particles in the NA64 experiment / Dusaev, R.R. (Tomsk State U.) ; Kirpichnikov, D.V. (Moscow, INR) ; Kirsanov, M.M. (Moscow, INR)
Axion-like particles $a$ (ALPs) that couple to the Standard Model (SM) gauge fields could be observed in the high-energy photon scattering $\gamma N\to N a$ off nuclei followed by the $a\to \gamma\gamma$ decay. In the present paper we describe the calculation of the ALP production cross-section and the properties of this production. [...]
arXiv:2004.04469.- 2020-09-29 - 8 p. - Published in : Phys. Rev. D 102 (2020) 055018 Article from SCOAP3: PDF; Fulltext: PDF;

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2020-10-14
04:07
Radiation campaign of HPK prototype LGAD sensors for the High-Granularity Timing Detector (HGTD)Radiation Campaign of HPK Prototype LGAD sensors for the High-Granularity Timing Detector (HGTD) / Shi, X. (Beijing, Inst. High Energy Phys.) ; Ayoub, M.K. (Beijing, Inst. High Energy Phys.) ; da Costa, J. Barreiro Guimarães (Beijing, Inst. High Energy Phys.) ; Cui, H. (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Kiuchi, R. (Beijing, Inst. High Energy Phys.) ; Fan, Y. (Beijing, Inst. High Energy Phys.) ; Han, S. (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Huang, Y. (Beijing, Inst. High Energy Phys.) ; Jing, M. (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Liang, Z. (Beijing, Inst. High Energy Phys.) et al.
We report on the results of a radiation campaign with neutrons and protons of Low Gain Avalanche Detectors (LGAD) produced by Hamamatsu (HPK) as prototypes for the High-Granularity Timing Detector (HGTD) in ATLAS. Sensors with an active thickness of 50~$\mu$m were irradiated in steps of roughly 2$\times$ up to a fluence of $3\times10^{15}~\mathrm{n_{eq}cm^{-2}}$. [...]
arXiv:2004.13895.- 2020-11-01 - 15 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 979 (2020) 164382 Fulltext: PDF;
In : 12th international "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors, Hiroshima, Japan, 14 - 18 Dec 2019, pp.164382

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2020-10-14
04:07
Two low-power optical data transmission ASICs for the ATLAS Liquid Argon Calorimeter readout upgrade / Xiao, Le (Hua-Zhong Normal U., LQLP ; Southern Methodist U.) ; Zhou, Wei (Hua-Zhong Normal U., LQLP ; Southern Methodist U.) ; Sun, Quan (Southern Methodist U.) ; Deng, Binwei (Hubei Norm. U.) ; Gong, Datao (Southern Methodist U.) ; Guo, Di (Hua-Zhong Normal U., LQLP ; Southern Methodist U.) ; He, Huiqin (SZPT, Shenzhen) ; Hou, Suen (Taiwan, Inst. Phys.) ; Liu, Chonghan (Southern Methodist U.) ; Liu, Tiankuan (Southern Methodist U.) et al.
A serializer ASIC and a VCSEL driver ASIC are needed for the front-end optical data transmission in the ATLAS liquid argon calorimeter readout phase-I upgrade. The baseline ASICs are the serializer LOCx2 and the VCSEL driver LOCld, designed in a 0.25-{\mu}m Silicon-on-Sapphire (SoS) CMOS technology and consumed 843 mW and 320 mW, respectively. [...]
arXiv:2009.06148.- 2019-04-21 - 12 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 924 (2019) 160-165 Fulltext: PDF;
In : 11th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11) in conjunction with 2nd Workshop on SOI Pixel Detectors (SOIPIX2017) at OIST, Okinawa, Japan, Okinawa, Japan, 10 - 15 Dec 2017, pp.160-165

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2020-10-13
06:15
The neutron component of background of an HPGe detector operating in a surface laboratory / Baginova, M (CERN ; Comenius U.) ; Vojtyla, P (CERN) ; Povinec, P P (Comenius U.)
Investigation of neutron-induced background was carried out by studying interactions of cosmic-ray neutrons with an HPGe detector inside its shield placed on a ground floor of a 3-storey building. The study was conducted experimentally and by Monte Carlo simulations using GEANT4 simulation tool. [...]
2020 - Published in : Appl. Radiat. Isot. 166 (2020) 109422 Fulltext: PDF;

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2020-10-13
06:15
Influence of heterogeneous media on Very High Energy Electron (VHEE) dose penetration and a Monte Carlo-based comparison with existing radiotherapy modalities / Lagzda, Agnese (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Angal-Kalinin, Deepa (Cockcroft Inst. Accel. Sci. Tech. ; Daresbury) ; Jones, James (Cockcroft Inst. Accel. Sci. Tech. ; Daresbury) ; Aitkenhead, Adam (Unlisted, UK ; Manchester U.) ; Kirkby, Karen J (Unlisted, UK ; Manchester U.) ; MacKay, Ranald (Unlisted, UK ; Manchester U.) ; Van Herk, Marcel (Unlisted, UK ; Manchester U.) ; Farabolini, Wilfrid (CERN) ; Zeeshan, Sumaira (CERN) ; Jones, Roger M (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.)
• First experimental demonstration of the relative insensitivity of VHEE beams to inhomogeneities. • Topas/GEANT4 simulations on experiments conducted at CERN’s CLEAR facility are in good agreement. [...]
2020 - 12 p. - Published in : Nucl. Instrum. Methods Phys. Res., B 482 (2020) 70-81

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2020-10-10
06:45
Low level Radio Frequency studies for the Compact Linear Collider Damping Rings / Mastoridis, T (Cal. Poly.) ; Miller, B (Cal. Poly.) ; Grudiev, A (CERN)
The Compact Linear Collider (CLIC) Damping Rings (DRs) need to generate ultra-low emittance bunches to achieve high luminosity in CLIC. Strong wiggler magnets are required to significantly increase the energy loss per turn. [...]
2021 - 10 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 985 (2021) 164659

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2020-10-10
06:45
Effect of local linear coupling on linear and nonlinear observables in circular accelerators / Hofer, M (CERN ; Vienna U.) ; Tomás, R (CERN)
Operation of particle accelerators and correction of unavoidable magnet or alignment errors critically depend on the assessment of both global and local observables such as tune or resonance driving terms. With most of the observables being a sum of different error sources, careful disentangling is necessary in order to establish an optimal correction and allow for smooth operation. [...]
2020 - 11 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 094001 Fulltext from Publisher: PDF;

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2020-10-10
06:45
Taming the superconductors of tomorrow / Bottura, Luca (CERN)
The imminent deployment of accelerator magnets based on the superconductor Nb3Sn for the high-luminosity LHC serves as a springboard to future accelerator magnets for fundamental exploration, writes Luca Bottura..
2020 - 5 p. - Published in : CERN Cour.: 60 (2020) , no. 3, pp. 34-38 External link: Fulltext

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2020-10-10
06:45
Model predictions of charge particle densities and multiplicities in the forward region at 7 TeV / Khan, Rashid (Abdul Wali Khan U., Mardan) ; Ajaz, Muhammad (Abdul Wali Khan U., Mardan)
We simulate proton–proton interactions to study densities and multiplicities of charged particles at center-of-mass energy, s = 7 TeV in the forward region and compare predictions with experimental findings of LHCb detector. We use different event generators: Sibyll2.3c, EPOS (1.99 and LHC tunes), and DPMJETIII for the simulations. [...]
2020 - 10 p. - Published in : Mod. Phys. Lett. A 35 (2020) 2050190

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