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1.
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A study of radiation effects on LuAG:Ce(Pr) co-activated with Ca
/ Petrosyan, A G (Ashtarak, IPR) ; Ovanesyan, K L (Ashtarak, IPR) ; Derdzyan, M V (Ashtarak, IPR) ; Ghambaryan, I (Ashtarak, IPR) ; Patton, G (Lyon, LPCML) ; Moretti, F (Lyon, LPCML) ; Auffray, E (CERN) ; Lecoq, P (CERN) ; Lucchini, M (CERN) ; Pauwels, K (CERN) et al.
Single crystals of LuAG:Ce co-doped with Ca2+ were grown by the vertical Bridgman method and studied for optical properties, γ-irradiation induced absorption, scintillation light yield and decay. It is shown that addition of Ca2+ may efficiently limit the radiation induced absorption associated with presence of trace amounts of Yb. [...]
2015 - 6 p.
- Published in : J. Cryst. Growth 430 (2015) 46-51
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4.
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Interstitial Li$^+$ Controls the UV Transmission and the Radiation Hardness in YAG
/ Derdzyan, Marina V (NAS Armenia, Yerevan) ; Hovhannesyan, Karine L (NAS Armenia, Yerevan) ; Novikov, Artur (NAS Armenia, Yerevan) ; Auffray, Etiennette (CERN) ; Petrosyan, Ashot G (NAS Armenia, Yerevan) ; Dujardin, Christophe (ILM, Lyon)
Optical absorption spectra measured in as-grown and gamma-ray irradiatedun-doped YAG, Li-doped YAG, and Ca-doped YAG single crystals arecompared for characterization of effects introduced by impurities. The studiesare conducted on single crystals grown by the vertical Bridgman method.Basing on the Li$^+$ incorporation mechanism, clarification is done regardingthe optimal amounts of Li$^+$ for preparation of YAG:Li crystals with lowconcentration of anion vacancies and related defects giving rise to absorptionin the UV range. [...]
2019
- Published in : Phys. Status Solidi B 256 (2019) 1800724
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5.
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COMPASS Production System Overview
/ Petrosyan, Artem (Dubna, JINR)
Migration of COMPASS data processing to Grid environment has started in 2015 from a small prototype, deployed on a single virtual machine. Since summer of 2017, the system works in production mode, distributing jobs to two traditional Grid sites: CERN and JINR. [...]
EDP Sciences, 2019 - 8 p.
- Published in : EPJ Web Conf. 214 (2019) 03039
Fulltext: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.03039
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6.
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7.
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Identification of tagging jets in VBF H$\to \tau^{−}\tau^{+}$ process with CMS experiment on Large Hadron Collider at large amount of additionally imposed $pp$-interactions
/ Sirunyan, A M (NAS Armenia, Yerevan) ; Tumasyan, A R (NAS Armenia, Yerevan) ; Khachatryan, V A (NAS Armenia, Yerevan) ; Petrosyan, A G (NAS Armenia, Yerevan)
The procedure of identification of tagging jets in the Higgs boson production process with a following decay of the Higgs boson to τ-leptons (VBF H→τ$^{−}$τ$^{+}$) at the endcup region of the upgraded CMS detector at large amount (140) of additionally imposed pp-interactions is given. The efficiency and purity of tagging jets selection at the CMS endcup region are estimated..
2016 - 8 p.
- Published in : J. Contemp. Phys.: 51 (2016) , no. 4, pp. 299-306
- Published in : Izv. Akad. Nauk Arm. SSR Fiz.: 51 (2016) , no. 4, pp. 407-416
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8.
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Effect of Mg$^{2+}$ ions co-doping on timing performance and radiation tolerance of Cerium doped Gd$_{3}$Al$_{2}$Ga$_{3}$O$_{12}$ crystals
/ Lucchini, M.T. (CERN) ; Babin, V. (Prague, Inst. Phys.) ; Bohacek, P. (Prague, Inst. Phys.) ; Gundacker, S. (CERN) ; Kamada, K. (Tohoku U. (main) ; C&A Corporation, Sendai) ; Nikl, M. (Prague, Inst. Phys.) ; Petrosyan, A. (Ashtarak, IPR) ; Yoshikawa, A. (Tohoku U. (main) ; Tohoku U., Inst. Materials Res. ; C&A Corporation, Sendai) ; Auffray, E. (CERN)
Inorganic scintillators with high density and high light yield are of major interest for applications in medical imaging and high energy physics detectors. In this work, the optical and scintillation properties of Mg co-doped Ce:Gd3Al2Ga3O12 crystals, grown using Czochralski technique, have been investigated and compared with Ce:Gd3Al2Ga3O12 ones prepared with identical technology. [...]
2016
- Published in : Nucl. Instrum. Methods Phys. Res., A 816 (2016) 176-183
Elsevier Open Access article: PDF;
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9.
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Next Generation Workload Management System For Big Data on Heterogeneous Distributed Computing
/ Klimentov, A (Brookhaven) ; Buncic, P (CERN) ; De, K (Texas U., Arlington) ; Jha, S (Rutgers U., Piscataway) ; Maeno, T (Brookhaven) ; Mount, R (SLAC) ; Nilsson, P (Brookhaven) ; Oleynik, D (Texas U., Arlington) ; Panitkin, S (Brookhaven) ; Petrosyan, A (Texas U., Arlington) et al.
The Large Hadron Collider (LHC), operating at the international CERN Laboratory in Geneva, Switzerland, is leading Big Data driven scientific explorations. Experiments at the LHC explore the fundamental nature of matter and the basic forces that shape our universe, and were recently credited for the discovery of a Higgs boson. [...]
2015 - 8 p.
- Published in : J. Phys.: Conf. Ser. 608 (2015) 012040
Fulltext: PDF;
In : 16th International workshop on Advanced Computing and Analysis Techniques in physics (ACAT), Prague, Czech Republic, 1 - 5 Sep 2014, pp.012040
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10.
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Integrating Network-Awareness and Network-Management into PhEDEx
/ Lapadatescu, Vlad (Caltech) ; Wildish, Tony (Princeton U.) ; Ball, Bob (Michigan U.) ; Barczyk, Artur (Caltech) ; Batista, Jorge (Michigan U.) ; De, Kaushik (Texas U., Arlington) ; Mckee, Shawn (Michigan U.) ; Melo, Andrew (Vanderbilt U.) ; Newman, Harvey (Caltech) ; Petrosyan, Artem (Texas U., Arlington) et al.
SISSA, 2016
- Published in : PoS ISGC2015 (2016) 018
Fulltext: PDF; External link: Published version from PoS
In : International Symposium on Grids and Clouds 2015, Taipei, Taiwan, 15-20 Mar 2015, pp.018
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