Optimization of the JUNO liquid scintillator composition using a Daya Bay antineutrino detector
Instrumentation and Detectors
2020-07-02 v1 High Energy Physics - Experiment
Abstract
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.
Keywords
Cite
@article{arxiv.2007.00314,
title = {Optimization of the JUNO liquid scintillator composition using a Daya Bay antineutrino detector},
author = {Daya Bay and JUNO collaborations and : and A. Abusleme and T. Adam and S. Ahmad and S. Aiello and M. Akram and N. Ali and F. P. An and G. P. An and Q. An and G. Andronico and N. Anfimov and V. Antonelli and T. Antoshkina and B. Asavapibhop and J. P. A. M. de André and A. Babic and A. B. Balantekin and W. Baldini and M. Baldoncini and H. R. Band and A. Barresi and E. Baussan and M. Bellato and E. Bernieri and D. Biare and T. Birkenfeld and M. Bishai and S. Blin and D. Blum and S. Blyth and C. Bordereau and A. Brigatti and R. Brugnera and A. Budano and P. Burgbacher and M. Buscemi and S. Bussino and J. Busto and I. Butorov and A. Cabrera and H. Cai and X. Cai and Y. K. Cai and Z. Y. Cai and A. Cammi and A. Campeny and C. Y. Cao and G. F. Cao and J. Cao and R. Caruso and C. Cerna and I. Chakaberia and J. F. Chang and Y. Chang and H. S. Chen and P. A. Chen and P. P. Chen and S. M. Chen and S. J. Chen and X. R. Chen and Y. W. Chen and Y. X. Chen and Y. Chen and Z. Chen and J. Cheng and Y. P. Cheng and Z. K. Cheng and A. Chepurnov and J. J. Cherwinka and F. Chiarello and D. Chiesa and P. Chimenti and M. C. Chu and A. Chukanov and A. Chuvashova and . Clementi and B. Clerbaux and S. Conforti Di Lorenzo and D. Corti and S. Costa and F. D. Corso and J. P. Cummings and O. Dalager and C. De La Taille and F. S. Deng and J. W. Deng and Z. Deng and Z. Y. Deng and W. Depnering and M. Diaz and X. F. Ding and Y. Y. Ding and B. Dirgantara and S. Dmitrievsky and M. V. Diwan and T. Dohnal and G. Donchenko and J. M. Dong and D. Dornic and E. Doroshkevich and J. Dove and M. Dracos and F. Druillole and S. X. Du and S. Dusini and M. Dvorak and D. A. Dwyer and T. Enqvist and H. Enzmann and A. Fabbri and L. Fajt and D. H. Fan and L. Fan and C. Fang and J. Fang and A. Fatkina and D. Fedoseev and V. Fekete and L. C. Feng and Q. C. Feng and G. Fiorentini and R. Ford and A. Formozov and A. Fournier and S. Franke and J. P. Gallo and H. N. Gan and F. Gao and A. Garfagnini and A. 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journal= {arXiv preprint arXiv:2007.00314},
year = {2020}
}
Comments
13 pages, 8 figures