Optimization of the JUNO liquid scintillator composition using a Daya Bay antineutrino detector

被引：34

作者：

Abusleme, A. ^{[1
]}

Adam, T. ^{[2
]}

Ahmad, S. ^{[3
]}

Aiello, S. ^{[4
,5
]}

Akram, M. ^{[3
]}

Ali, N. ^{[3
]}

An, F. P. ^{[6
]}

An, G. P. ^{[7
]}

An, Q. ^{[8
]}

Andronico, G. ^{[4
,5
]}

Anfimov, N. ^{[9
]}

Antonelli, V ^{[10
,11
]}

Antoshkina, T. ^{[9
]}

Asavapibhop, B. ^{[12
]}

de Andre, J. P. A. M. ^{[2
]}

Babic, A. ^{[13
]}

Balantekin, A. B. ^{[14
]}

Baldini, W. ^{[15
,16
]}

Baldoncini, M. ^{[15
,16
]}

Band, H. R. ^{[17
,18
]}

Barresi, A. ^{[19
,20
]}

Baussan, E. ^{[2
]}

Bellato, M. ^{[21
]}

Bernieri, E. ^{[22
,23
]}

Biare, D. ^{[9
]}

Birkenfeld, T. ^{[24
]}

Bishai, M. ^{[25
]}

Blin, S. ^{[26
]}

Blum, D. ^{[27
]}

Blyth, S. ^{[28
]}

Bordereau, C. ^{[29
,30
]}

Brigatti, A. ^{[10
,11
]}

Brugnera, R. ^{[21
,31
]}

Budano, A. ^{[22
,23
]}

Burgbacher, P. ^{[27
]}

Buscemi, M. ^{[4
,5
]}

Bussino, S. ^{[22
,23
]}

Busto, J. ^{[32
]}

Butorov, I ^{[9
]}

Cabrera, A. ^{[26
]}

Cai, H. ^{[33
]}

Cai, X. ^{[7
]}

Cai, Y. K. ^{[7
]}

Cai, Z. Y. ^{[7
]}

Cammi, A. ^{[19
,34
]}

Campeny, A. ^{[1
]}

Cao, C. Y. ^{[7
]}

Cao, G. F. ^{[7
]}

Cao, J. ^{[7
]}

Caruso, R. ^{[4
,5
]}

机构：

[1] Pontificia Univ Catolica Chile, Santiago, Chile

[2] Univ Strasbourg, IPHC, CNRS, IN2P3, F-67037 Strasbourg, France

[3] Pakistan Inst Nucl Sci & Technol, Islamabad, Pakistan

[4] Univ Catania, INFN Catania, Catania, Italy

[5] Univ Catania, Dipartimento Fis & Astron, Catania, Italy

[6] East China Univ Sci & Technol, Shanghai, Peoples R China

[7] Inst High Energy Phys, Beijing, Peoples R China

[8] Univ Sci & Technol China, Hefei, Peoples R China

[9] Joint Inst Nucl Res, Dubna, Russia

[10] Univ Milan, Sez Milano, Ist Nazl Fis Nucl, Milan, Italy

[11] Univ Milan, Dipartimento Fis, Milan, Italy

[12] Chulalongkorn Univ, Fac Sci, Dept Phys, Bangkok, Thailand

[13] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia

[14] Univ Wisconsin, Madison, WI 53706 USA

[15] Univ Ferrara, Dept Phys & Earth Sci, Ferrara, Italy

[16] Ist Nazl Fis Nucl, Sez Ferrara, Ferrara, Italy

[17] Yale Univ, Wright Lab, New Haven, CT 06520 USA

[18] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[19] INFN Milano Bicocca, Milan, Italy

[20] Univ Milano Bicocca, Milan, Italy

[21] Ist Nazl Fis Nucl, Sez Padova, Padua, Italy

[22] Univ Roma Tre, Rome, Italy

[23] Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy

[24] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany

[25] Brookhaven Natl Lab, Upton, NY 11973 USA

[26] Univ Paris Saclay, IJCLab, CNRS, IN2P3, F-91405 Orsay, France

[27] Eberhard Karls Univ Tubingen, Phys Inst, Tubingen, Germany

[28] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan

[29] Univ Bordeaux, CNRS, CENBG, IN2P3, F-33170 Gradignan, France

[30] Natl United Univ, Miaoli, Taiwan

[31] Univ Padua, Dipartimento Fis & Astron, Padua, Italy

[32] Ctr Phys Particules Marseille, Marseille, France

[33] Wuhan Univ, Wuhan, Peoples R China

[34] Politecn Milan, Milan, Italy

[35] Shandong Univ, Jinan, Peoples R China

[36] Dongguan Univ Technol, Dongguan, Peoples R China

[37] Tsinghua Univ, Beijing, Peoples R China

[38] Nanjing Univ, Nanjing, Peoples R China

[39] Chinese Acad Sci, Inst Modern Phys, Lanzhou, Peoples R China

[40] Chiao Tung Univ, Inst Phys Natl, Hsinchu, Taiwan

[41] North China Elect Power Univ, Beijing, Peoples R China

[42] Sun Yat Sen Univ, Guangzhou, Peoples R China

[43] Forschungszentrum Julich, Nucl Phys Inst IKP 2, Julich, Germany

[44] Lomonosov Moscow State Univ, Moscow, Russia

[45] Univ Estadual Londrina, Londrina, Parana, Brazil

[46] Chinese Univ Hong Kong, Hong Kong, Peoples R China

[47] Univ Perugia, Ist Nazl Fis Nucl, Sez Perugia, Perugia, Italy

[48] Univ Perugia, Dipartimento Chim Biol & Biotecnol, Perugia, Italy

[49] Univ Libre Bruxelles, Brussels, Belgium

[50] Siena Coll, Loudonville, NY 12211 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2021年 / 988卷 / 988期

基金：

国家重点研发计划; 美国国家科学基金会; 中国国家自然科学基金; 俄罗斯基础研究基金会;

关键词：

Neutrino; Liquid scintillator; Light yield; PULSE-SHAPE DISCRIMINATION; NEUTRINO; SYSTEM;

D O I：

10.1016/j.nima.2020.164823

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

To maximize the light yield of the liquid scintillator (LS) for the Jiangmen Underground Neutrino Observatory (JUNO), a 20 t LS sample was produced in a pilot plant at Daya Bay. The optical properties of the new LS in various compositions were studied by replacing the gadolinium-loaded LS in one antineutrino detector. The concentrations of the fluor, PPO, and the wavelength shifter, bis-MSB, were increased in 12 steps from 0.5 g/L and <0.01 mg/L to 4 g/L and 13 mg/L, respectively. The numbers of total detected photoelectrons suggest that, with the optically purified solvent, the bis-MSB concentration does not need to be more than 4 mg/L. To bridge the one order of magnitude in the detector size difference between Daya Bay and JUNO, the Daya Bay data were used to tune the parameters of a newly developed optical model. Then, the model and tuned parameters were used in the JUNO simulation. This enabled to determine the optimal composition for the JUNO LS: purified solvent LAB with 2.5 g/L PPO, and 1 to 4 mg/L bis-MSB.

引用

页数：10

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