1.
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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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2.
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Measurement of non-equilibrium carriers dynamics in Ce-doped YAG, LuAG and GAGG crystals with and without Mg-codoping
/ Lucchini, M T ; Buganov, O ; Auffray, E (CERN) ; Bohacek, P ; Korjik, M ; Kozlov, D ; Nargelas, S ; Nikl, M ; Tikhomirov, S ; Tamulaitis, G et al.
Non-linear absorption spectroscopy in pump and probe configuration has been used to test the population of non-equilibrium carriers in Ce-doped Y$_{3}$Al$_{5}$O_${12}$ (YAG), Lu3Al5O12 (LuAG), and Gd3AlxGa(5-x)O12 (GAGG) crystals with and without codoping by Mg2+ ions. A faster rise time of the induced optical density has been observed in all crystals codoped with Mg with respect to that in Mg-free samples. [...]
10.1016/j.jlumin.2017.10.005.-
2018 - 7 p.
- Published in : J. Lumin. 194 (2018) 1-7
Fulltext: PDF;
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3.
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Sub-100-picosecond time resolution from undoped and Li-doped two-dimensional perovskite scintillators
/ Cala', Roberto (CERN) ; Frank, Isabel (CERN) ; Pagano, Fiammetta (CERN) ; Maddalena, Francesco (Unlisted, SG) ; Dang, Cuong (Unlisted, SG) ; Birowosuto, Muhammad Danang (Unlisted, PL) ; Auffray, Etiennette (CERN)
Fast hybrid organic–inorganic two-dimensional (2D) perovskite scintillators with high light yield are measured for their scintillating properties. With a light yield of 17 300 ± 2140 photons/MeV, undoped PEA2PbBr4 crystals already exhibit 100 ± 4 ps coincidence time resolution (CTR) at 511 keV excitation. [...]
2022 - 5 p.
- Published in : Appl. Phys. Lett. 120 (2022) 241901
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4.
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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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5.
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Solution-Processable A$_2$XY$_4$ (A = PEA, BA; X = Pb, Sn, Cu, Mn; Y = Cl, Br, I) Crystals for High Light Yield and Ultrafast Scintillators
/ Sheikh, Md Abdul Kuddus ; Kowal, Dominik ; Mahyuddin, Muhammad Haris (Bandung Inst. Tech.) ; Onggo, Djulia (Bandung Inst. Tech.) ; Maddalena, Francesco ; Dang, Cuong (Nanyang Technol. U.) ; Cala', Roberto (Milan Bicocca U.) ; Auffray, Etiennette (CERN) ; Witkowski, Marcin Eugeniusz (Torun, Copernicus Astron. Ctr.) ; Makowski, Michal (Torun, Copernicus Astron. Ctr.) et al.
Two-dimensional (2-D) Ruddlesden-Popper (RP) hybrid organic-inorganic perovskite (HOIP) crystals, A 2 XY 4 [A = Phenethylammonium (PEA), Butylammonium (BA); X = Pb, Sn, Cu, Mn; Y = Cl, Br, I] have been a subject of interest for solution-processable scintillators for the past two decades, due to the possibility to grow high-quality and large crystals with low-cost techniques. We start the review from PEA 2 PbBr 4 and BA 2 PbBr 4 crystals, which have light yields >10 photons/keV and scintillation decay times < 15 ns. [...]
2023 - 8 p.
- Published in : IEEE Trans. Nucl. Sci. 70 (2023) 1384-1391
In : 16th International Conference on Scintillating Materials & their Applications (SCINT 2022), Santa Fe, New Mexico, United States, 19 - 23 Sep 2022, pp.1384-1391
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6.
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Polarization analysis of $\bar{\rho}$ produced in pA collisions
/ Grzonka, D (Julich, Forschungszentrum) ; Alfs, D (Julich, Forschungszentrum ; Jagiellonian U.) ; Asaturyan, A (NAS Armenia, Yerevan) ; Carmignotto, M (Catholic U.) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Eyrich, W (Erlangen - Nuremberg U.) ; Głowacz, B (Jagiellonian U.) ; Hauenstein, F (Old Dominion U.) ; Horn, T (Catholic U.) ; Kilian, K (Julich, Forschungszentrum) et al.
A quite simple procedure for the generation of a polarized antiproton beam could be worked out if antiprotons are produced with some polarization. In order to investigate this possibility measurements of the polarization of produced antiprotons have been started at a CERN/PS test beam. [...]
2019 - 4 p.
- Published in : EPJ Web Conf. 199 (2019) 05013
Fulltext: PDF;
In : 15th International Workshop on Meson Physics, Kraków, Poland, 7 - 12 Jun 2018, pp.05013
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7.
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Drift chamber calibration and particle identification in the P-349 experiment
/ Alfs, D (Julich, Forschungszentrum ; Jagiellonian U.) ; Asaturyan, A (NAS Armenia, Yerevan) ; Carmignotto, M (Catholic U.) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Eyrich, W (Erlangen - Nuremberg U.) ; Głowacz, B (Jagiellonian U.) ; Grzonka, D (Julich, Forschungszentrum) ; Hauenstein, F (Old Dominion U.) ; Horn, T (Catholic U.) ; Kilian, K (Julich, Forschungszentrum) et al.
The goal of the P-349 experiment is to test whether 3.5 GeV/c antiprotons produced in high-energy proton-proton collisions are polarized in view of the preparation of a polarized antiproton beam. In this article, we present the details of the ongoing analysis focused on the drift chambers calibration and particle identification with DIRC..
2019 - 4 p.
- Published in : EPJ Web Conf. 199 (2019) 05017
Fulltext: PDF;
In : 15th International Workshop on Meson Physics, Kraków, Poland, 7 - 12 Jun 2018, pp.05017
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8.
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Scintillation Properties of ${\rm Ce}^{3+}$- and ${\rm Pr}^{3+}$-Doped LuAG, YAG and Mixed ${\rm Lu}_{\rm x}{\rm Y}_{1-{\rm x}}{\rm AG}$ Garnet Crystals
/ Mares, J A (Prague, Inst. Phys.) ; Nikl, M (Prague, Inst. Phys.) ; Beitlerova, A (Prague, Inst. Phys.) ; Horodysky, P (Crytur Ltd., Turnov, Czech Republik) ; Blazek, K (Crytur Ltd., Turnov, Czech Republik) ; Bartos, K (Crytur Ltd., Turnov, Czech Republik) ; D'Ambrosio, C (CERN)
We summarize the latest R&D; state-of-art of Ce 3+ and Pr 3+ -doped mixed (Lu x Y 1-x ) 3 Al 5 O 12 (LuYAG) garnet scintillator crystals and compare their properties with those of Lu 3 Al 5 O 12 (LuAG) and Y 3 Al 5 O 12 (YAG) single crystal analogues. Light yield, energy resolution and proportionality were studied under radioisotope excitation within 8-1300 keV energy range. [...]
2012 - 6 p.
- Published in : IEEE Trans. Nucl. Sci. 59 (2012) 2120-2125
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9.
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Search for polarized antiproton production
/ Grzonka, D (Julich, Forschungszentrum) ; Alfs, D (Julich, Forschungszentrum ; Jagiellonian U.) ; Asaturyan, A (NAS Armenia, Yerevan) ; Carmignotto, M (Catholic U.) ; Diermaier, M (Stefan Meyer Inst. Subatomare Phys.) ; Eyrich, W (Erlangen - Nuremberg U.) ; Głowacz, B (Jagiellonian U.) ; Hauenstein, F (Old Dominion U.) ; Horn, T (Catholic U.) ; Kilian, K (Julich, Forschungszentrum) et al.
The production of antiprotons is studied in view of possible polarization effects as basis for a polarized antiproton beam. If antiprotons are produced with some polarization, a quite simple procedure for the generation of a polarized antiproton beam could be worked out. [...]
2019 - 8 p.
- Published in : Hyperfine Interact. 240 (2019) 22
In : 13th International Conference on Low Energy Antiproton Physics, Paris, France, 12 - 16 Mar 2018, pp.22
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10.
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Growth and characterization of Ce-doped YAG and LuAG fibers
/ Djebli, A (ILM, Lyon ; Constantine 1 University, Algeria) ; Boudjada, F (ILM, Lyon ; Constantine 1 University, Algeria) ; Pauwels, K (CERN ; Milan Bicocca U.) ; Kononets, V (ILM, Lyon ; Inst. Scintill. Mat., Kharkiv) ; Patton, G (ILM, Lyon) ; Benaglia, A (CERN ; Princeton U.) ; Lucchini, M (CERN) ; Moretti, F (ILM, Lyon) ; Sidletskiy, O (Milan Bicocca U.) ; Dujardin, C (ILM, Lyon) et al.
Undoped and Ce-doped $Lu_3Al_5O_{12}$ (LuAG) and $Y_3Al_5O_{12}$ (YAG) single crystal fibers were grown by the micro-pulling down technique (μ-PD) with a purpose to fit the design of new dual-readout calorimeter planned to operate in future experiences of high energy physics. Fibers up to 20 cm in length and 1 mm in diameter were grown along [111] direction. [...]
2017 - 3 p.
- Published in : Opt. Mater. 65 (2017) 66-68
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