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Prediction of energy resolution in the JUNO experiment

Chinese physics C 2025年第1期49卷 35-59页

作者： Angel Abusleme Thomas Adam Kai Adamowicz Shakeel Ahmad Rizwan Ahmed Sebastiano Aiello Fengpeng An Qi An Giuseppe Andronico Nikolay Anfimov Vito Antonelli Tatiana Antoshkina Joao Pedro Athayde Marcondes de André Didier Auguste Weidong Bai Nikita Balashov Wander Baldini Andrea Barresi Davide Basilico Eric Baussan Marco Bellato Marco Beretta Antonio Bergnoli Daniel Bick Lukas Bieger Svetlana Biktemerova Thilo Birkenfeld Iwan Blake David Blum Simon Blyth Anastasia Bolshakova Mathieu Bongrand Clément Bordereau Dominique Breton Augusto Brigatti Riccardo Brugnera Riccardo Bruno Antonio Budano Jose Busto Anatael Cabrera Barbara Caccianiga Hao Cai Xiao Cai Yanke Cai Zhiyan Cai Stéphane Callier Steven Calvez Antonio Cammi Agustin Campeny Chuanya Cao Guofu Cao Jun Cao Rossella Caruso Cédric Cerna Vanessa Cerrone Jinfan Chang Yun Chang Auttakit Chatrabhuti Chao Chen Guoming Chen Pingping Chen Shaomin Chen Xin Chen Yiming Chen Yixue Chen Yu Chen Zelin Chen Zhangming Chen Zhiyuan Chen Zikang Chen Jie Cheng Yaping Cheng YuChin Cheng Alexander Chepurnov Alexey Chetverikov Davide Chiesa Pietro Chimenti Yen-Ting Chin Po-Lin Chou Ziliang Chu Artem Chukanov Gérard Claverie Catia Clementi Barbara Clerbaux Marta Colomer Molla Selma Conforti Di Lorenzo Alberto Coppi Daniele Corti Simon Csakli Chenyang Cui Flavio Dal Corso Olivia Dalager Jaydeep Datta Christophe De La Taille Zhi Deng Ziyan Deng Xiaoyu Ding Xuefeng Ding Yayun Ding Bayu Dirgantara Carsten Dittrich Sergey Dmitrievsky Tadeas Dohnal Dmitry Dolzhikov Georgy Donchenko Jianmeng Dong Evgeny Doroshkevich Wei Dou Marcos Dracos Frédéric Druillole Ran Du Shuxian Du Katherine Dugas Stefano Dusini Hongyue Duyang Jessica Eck Timo Enqvist Andrea Fabbri Ulrike Fahrendholz Lei Fan Jian Fang Wenxing Fang Dmitry Fedoseev Li-Cheng Feng Qichun Feng Federico Ferraro Amélie Fournier Fritsch Fritsch Haonan Gan Feng Gao Feng Gao Alberto Garfagnini Arsenii Gavrikov Marco Giammarchi Nunzio Giudice Maxim Gonchar Guanghua Gong Hui Gong Yuri Gornushkin Marco Grassi Maxim Gromov Vasily Gromov Minghao G yerevan physics institute YerevanArmenia Université Libre de Bruxelles BrusselsBelgium Universidade Estadual de Londrina LondrinaBrazil Pontificia Universidade Catolica do Rio de Janeiro Rio de JaneiroBrazil Millennium institute for SubAtomic physics at the High-energy Frontier(SAPHIR) ANIDChile Pontificia Universidad Católica de Chile SantiagoChile Beijing institute of Spacecraft Environment Engineering BeijingChina Beijing Normal University BeijingChina China institute of Atomic Energy BeijingChina institute of High Energy physics BeijingChina North China Electric Power University BeijingChina School of physics Peking UniversityBeijingChina Tsinghua University BeijingChina University of Chinese Academy of Sciences BeijingChina Jilin University ChangchunChina College of Electronic Science and Engineering National University of Defense TechnologyChangshaChina Chongqing University ChongqingChina Dongguan University of Technology DongguanChina Jinan University GuangzhouChina Sun Yat-sen University GuangzhouChina Harbin institute of Technology HarbinChina University of Science and Technology of China HefeiChina The Radiochemistry and Nuclear Chemistry Group in University of South China HengyangChina Wuyi University JiangmenChina Shandong University JinanChinaand Key Laboratory of Particle Physics and Particle Irradiation of Ministry of EducationShandong UniversityQingdaoChina Nanjing University NanjingChina Guangxi University NanningChina East China University of Science and Technology ShanghaiChina School of physics and Astronomy Shanghai Jiao Tong UniversityShanghaiChina Tsung-Dao Lee institute Shanghai Jiao Tong UniversityShanghaiChina institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesShijiazhuangChina Nankai University TianjinChina Wuhan University WuhanChina Xi'an Jiaotong University Xi'anChina Xiamen University XiamenChina School of physics and Microelectronics Zhengzhou UniversityZhengzhouChina institute of physics National

This paper presents an energy resolution study of the JUNO experiment,incorporating the latest knowledge acquired during the detector construction *** determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 *** achieve this ambitious goal,significant efforts have been undertaken in the design and production of the key components of the JUNO *** factors affecting the detection of inverse beta decay signals have an impact on the energy resolution,extending beyond the statistical fluctuations of the detected number of photons,such as the properties of the liquid scintillator,performance of photomultiplier tubes,and the energy reconstruction *** account for these effects,a full JUNO simulation and reconstruction approach is *** enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy *** results of this study reveal an energy resolution of 2.95% at 1 ***,this study assesses the contribution of major effects to the overall energy resolution *** analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data ***,it provides a guideline for comprehending the energy resolution characteristics of liquid scintillator-based detectors.

关键词： energy resolution liquid scintillator detector JUNO simulation reconstruction

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The multi-impurity system in CdSe nanoplatelets:electronic structure and thermodynamic properties

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Communications in Theoretical physics 2024年第3期76卷 165-173页

作者： D A Baghdasaryan V A Harutynyan E M Kazaryan H A Sarkisyan Russian-Armenian University H Emin 1230051YerevanArmenia institute of Applied Problems of physics 25 Nersisyan St0014YerevanArmenia

This paper theoretically studies the impurity states and the effects of impurity concentration and configuration on the optical,electrical,and statistical properties of CdSe nanoplatelets(NPLs).An image charge-based model of electron-impurity interaction is *** charge-carrier energy spectra and corresponding wave functions depending on the impurity number and configuration are *** electron binding energies are calculated for different NPL *** is shown that the image charge-based interaction potential that arises due to the dielectric constants mismatch is much stronger than the interaction potential that does not take such a mismatch into ***,it is demonstrated that the binding energies are increasing with the number of *** calculate the canonical partition function using the energy levels of the electron,which in turn is used to obtain the mean energy,heat capacity,and entropy of the non-interacting electron *** thermodynamic properties of the non-interacting electron gas that depend on the geometric parameters of the NPL,impurity number,configuration,and temperature are studied.

关键词： nanoplateletes thermodynamic properties impurity states

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Quasi-Conical Quantum Dot: Electron States and Quantum Transitions

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Communications in Theoretical physics 2015年第2期63卷 255-260页

作者： Eduard M.Kazaryan Lyudvig S.Petrosyan Vanik A.Shahnazarya Hayk A.Sarkisyan Russian-Armenian (Slavonic) University yerevan State Medical University Science institute University of Iceland yerevan State University

The exactly solvable model of quasi-conical quantum dot, having a form of spherical sector, is proposed. Due to the specific symmetry of the problem the separation of variables in spherical coordinates is possible in the one- electron Sehrodinger equation. Analytical expressions for wave function and energy spectrum are obtained. It is shown that at small values of the stretch angle of spherical sector the problem is reduced to the conical QD problem. The comparison with previously performed works shows good agreement of results. As an application of the obtained results, the quantum transitions in the system are considered.

关键词： conical quantum dot electron states quantum transitions

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Radiation of Ultra Low Frequency Electromagnetic Waves from Atmosphere under the Influence of Strong Shock Waves

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Chinese physics Letters 2015年第3期32卷 39-41页

作者： A. R. Aramyan S. A. Aramyan S. G. Bilen L. Sh. Grigoryan H. F. Khachatryan institute of Applied Problems of physics National Academy of Sciences of Armenia Yerevan 0014 Republic of Armenia International Scientific and Educational Center National Academy of Sciences of Armenia Yerevan 0019 Republic of Armenia Pennsylvania State University University Park PA USA

We present preliminary results from the experimental investigation of the response of the atmosphere due to the impact of powerful shock waves. The response is evidenced as ultra low frequency electromagnetic wave radiation at frequency of 2-5 kHz and in duration of 3 7s. We hypothesize that this radiation appears due to the following process： the shock wave ionizes the neutral particles in the air and these charged and neutral particles continue their vertical motion, which forms in the trail of the shock wave. Such motion can cause the cyclotron-like radiation measured.

关键词： Radiation of Ultra Low Frequency Electromagnetic Waves from Atmosphere under the Influence of Strong Shock Waves

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Performance of the low pressure MWPCs for f ission fragments under a high background

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Chinese physics C 2011年第8期35卷 758-762页

作者：宋玉收 Margaryan A. 胡碧涛唐力光 College of Nuclear Science and Technology Harbin Engineering University yerevan physics institute School of Nuclear physics and Technology Lanzhou University Thomas Jefferson National Accel.Facility Department of physics Hampton University

Two couples of low pressure multi-wire proportional chambers （MWPC） were located in the target chamber to detect fission fragments in a hypernuclei producing experiment at Thomas Jefferson National Laboratory （Jlab）. In the experiment, a continuous wave （CW） electron beam was applied to form hypernuclei by electromagnetic interaction. In the target chamber, the high energy （1.853 GeV） and high intensity （500 nA） primary electron beam caused a high particle background, which influenced the detection of the fission fragments. This report described the design of the MWPCs and studied the fission-fragment detecting performance of them under such a high background. The efficiency of the MWPCs was given with the help of a high resolution kaon spectrometer. At the same time, the background particles were discussed with a Monte Carlo code based on GEANT4.

关键词： MWPC fission fragment background detecting performance

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Measurement of (di)muons from heavy flavour decay in p-p collisions at 14 TeV with ALICE at the LHC

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Chinese physics C 2010年第9期34卷 1538-1540页

作者：张晓明 L. Manceau N. Bastid P. Crochet S. Grigoryan 周代翠 Central China Normal University Institute of Particle Physics Wuhan China Clermont UniversitY Universite Blaise Pascal CNRS/IN2P3 LPC BP 10448 F-63000 Clermont-Ferrand yerevan physics institute Yerevan Armenia Joint institute for Nuclear Research (JINR) Dubna Russia

We present the performance of the ALICE muon spectrometer for measuring the charm and beauty inclusive p t differential production cross sections via single muons and unlike-sign dimuons in proton-proton collisions at... 详细信息

关键词： ALICE muon spectrometer heavy flavour pQCD

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Complement genetics,deficiencies,and disease associations

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Protein & Cell 2012年第7期3卷 487-496页

作者： Karine R.Mayilyan institute of Molecular Biology Armenian National Academy SciencesYerevan 0014Armenia

The complement system is a key component of innate *** than 45 genes encoding the proteins of complement components or their isotypes and subu-nits,receptors,and regulators have been *** genes are distributed throughout different chro-mosomes,with 19 genes comprising three significant complement gene clusters in the human ***-netic deficiency of any early component of the classical pathway(C1q,C1r/s,C2,C4,and C3)is associated with autoimmune diseases due to the failure of clearance of immune complexes(IC)and apoptotic materials,and the impairment of normal humoral ***-cies of mannan-binding lectin(MBL)and the early components of the alternative(factor D,properdin)and terminal pathways(from C3 onward components:C5,C6,C7,C8,C9)increase susceptibility to infections and their *** the association of MBL defi-ciency with a number of autoimmune and infectious disorders has been well established,the effects of the deficiency of other lectin pathway components(ficolins,MASPs)have been less extensively investigated due to our incomplete knowledge of the genetic background of such deficiencies and the functional activity of those *** complement regulators and receptors,the consequences of their genetic deficiency vary de-pending on their specific involvement in the regulatory or signalling steps within the complement cascade and *** article reviews current knowledge and concepts about the genetic load of complement com-ponent deficiencies and their association with *** integrative presentation of genetic data with the latest updates provides a background to further inves-tigations of the disease association investigations of the complement system from the perspective of sys-tems biology and systems genetics.

关键词： complement system deficiency disease association HLA-III RCA

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Mutually interacting tachyon dark energy with variable G and Λ

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Research in Astronomy and Astrophysics 2015年第2期15卷 175-190页

作者： Jafar Sadeghi Martiros Khurshudyan Margarit Hakobyan Hoda Farahani Department of physics Faculty of Basic Sciences University of Mazandaran Max Planck institute of Colloids and Interfaces Potsdam-Golm Science Park Am Mhlenberg 1 OT Golm 14476 Potsdam Germany A.I. Alikhanyan National Science Laboratory Alikhanian Brothers St. Yerevan Armenia Department of Nuclear physics Yerevan State University

We consider a tachyonic scalar field as a model of dark energy with interac- tion between components in the case of variable G and A. We assume a fiat Universe with a specific form of scale factor and study cosmological parameters numerically and graphically. Statefinder analysis is also performed. For a particular choice of in- teraction parameters we succeed in obtaining an analytical expression of densities. We find that our model will be stable at the late stage but there is an instability in the early Universe, so we propose this model as a realistic model of our Universe.

关键词： cosmology—early universe—cosmological parameters—dark energy

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Position reconstruction in fission fragment detection using the low pressure MWPC technique for the JLab experiment E02-017

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Chinese physics C 2014年第7期38卷 22-29页

作者：邱玺玉 L.Tang A.Margaryan 徐进章胡碧涛陈熙萌 School of Nuclear Science and Technology Lanzhou University Department of physics Hampton University Thomas Jefferson National Accelerator Facility Newport News VA 23606 USA yerevan physics institute School of Electrical and Automation Hefei University of Technology

When a A hyperon is embedded in a nucleus it can form a hypernucleus. The lifetime and its mass dependence of stable hypernuclei provide information about the AN interaction in the nuclear medium. This work will introduce the Jefferson Lab experiment （E02-017）, which aims to study the lifetime of the heavy hypernuclei using a specially developed fission fragment detection technique： a multi-wire proportional chamber operating under low gas pressure （LPMWPC）. The trajectory of the detected fragment is reconstructed and used to find the fission point on the target foil, the position resolution is less than I ram, which meets the original design, the separation of target materials and events mixture percentage in different regions are verified by Monte Carlo simulation.

关键词： hypernuclei decay LPMWPC fission fragment position reconstruction

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<i>In-Situ</i>Study of Non-Equilibrium Charge Carriers’ Behavior under Ultra-Short Pulsed Electrons Irradiation in Silicon Crystal

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Journal of Modern physics 2019年第9期10卷 1125-1133页

作者： Hrant N. Yeritsyan Aram A. Sahakyan Norair E. Grigoryan Vachagan V. Harutyunyan Vika V. Arzumanyan Vasili M. Tsakanov Bagrat A. Grigoryan Gayane A. Amatuni A. Alikhanyan National Science Laboratory (yerevan physics institute) Department of Applied Physics Yerevan Armenia CANDLE Synchrotron Research institute Yerevan Armenia

The recombination processes for charge carriers have been studied in n-type silicon crystals which were irradiated by pico-second duration pulse electrons with energy of 3.5 MeV (ultrafast irradiation), and maximum dose of 3.3 × 1013 el/cm2. In-situ measurements were carried out under artificial conditions simulating natural environment (space, semiconductor detectors, etc.). The observed phenomena were investigated experimentally in-situ using a high-speed oscilloscope equipped with a special preamplifier. Following irradiation to particular doses, some peculiarities of the recovery time of the semiconductor equilibrium condition (“characteristic time”), were obtained. Thus, it was found that the value of the “characteristic time” differs by an order of magnitude from the lifetime of the non-equilibrium (minority) charge carrier measured in an ex-situ regime. However, their behavior, as a function of irradiation dose, is similar and decreases with dose increase. Investigations of the dependencies of electro-physical parameters on irradiation dose, using Hall effect measurements, showed that at particular doses the radiation defects thus created, have an insignificant influence on the concentration of the charge carriers, but change their scattering properties appreciably, which affects the time parameters for the recombination of the semiconductor charge carriers. This investigation uses a novel approach to solid-state radiation physics, where in situ measurements were conducted in addition to conventional pre- and post-irradiation.

关键词： Silicon Crystal Irradiation Recombination Non-Equilibrium State Carrier Lifetime

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