scholarly journals Plasmonic light yield enhancement of a liquid scintillator

2013 ◽  
Vol 102 (21) ◽  
pp. 211902
Author(s):  
Lindsey J. Bignell ◽  
Eskender Mume ◽  
Timothy W. Jackson ◽  
George P. Lee
Keyword(s):  
Liquid Scintillator ◽  
Light Yield ◽  
Yield Enhancement

Measurement on Light Yield of Liquid Scintillator Based on P-Xylene

2014 ◽  
Vol 513-517 ◽  
pp. 4185-4187
Author(s):  
Li Ping He ◽  
Xuan Luo ◽  
Fang Yu ◽  
Zhi Jun Wei ◽  
Dong Xiao Liu ◽  
...  
Keyword(s):  
Liquid Scintillator ◽  
Light Output ◽  
Fluorescence Emission ◽  
Light Yield ◽  
Emission Spectra ◽  
Fluorescence Emission Spectra ◽  
Sensitive Region ◽  
Relative Light Output

The relative light output of liquid scintillator based on p-xylene (PX) was measured in this paper. The setup for testing on light output was clearly displayed. The results showed that the light yield increased as the addition of the second solute p-bis (o-methylatyryl)- benzene (bis-MSB). Bis-MSB moves the maxmun of fluorescence emission spectra of liquid scintillator from 365nm to 425nm, which is the most sensitive region for the PMT, so the possibility of self-absorption and the loss of light output could be reduced to some extent.

scholarly journals PROSPECT – A precision reactor oscillation and spectrum experiment

2020 ◽  
Vol 50 ◽  
pp. 2060001
Author(s):  
N. S. Bowden
Keyword(s):  
Energy Spectrum ◽  
Liquid Scintillator ◽  
National Laboratory ◽  
Light Yield ◽  
Cosmic Ray ◽  
Pulse Shape Discrimination ◽  
Short Baseline ◽  
Efficient System ◽  
Oak Ridge ◽  
Reactor Antineutrino

PROSPECT is a reactor antineutrino experiment whose primary goals are to search for short-baseline neutrino oscillations and perform a precise measurement of the [Formula: see text]U reactor antineutrino energy spectrum. Since March 2018, PROSPECT has operated a 4 ton antineutrino detector less than 10 m from the 85 MW High Flux Isotope Reactor (HFIR) at the Oak Ridge National Laboratory. Operating in this environment with tight space constraints and limited overburden to attenuate cosmic ray backgrounds is a significant technical challenge. The PROSPECT detector design uses efficient optical segmentation and a 6Li-doped liquid scintillator with good light yield and pulse-shape discrimination properties to achieve excellent energy reconstruction and background rejection in a compact, space efficient system. Initial results from PROSPECT have demonstrated the ability to detect 100 s of antineutrino events per day with good signal-to-background in this aboveground location and perform precise measurements of the HFIR antineutrino energy spectrum.

scholarly journals Feasibility Study of an Alcohol-Based Liquid Scintillation Detector and Its Application

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Byoung Chan Kim ◽  
Ji Young Choi ◽  
Kyung Kwang Joo ◽  
Seon Yeong Park ◽  
Ye Sung Song ◽  
...  
Keyword(s):  
Electron Beam ◽  
Liquid Scintillator ◽  
Medical Physics ◽  
Base Material ◽  
Light Yield ◽  
Particle Detector ◽  
Particle Detectors ◽  
Measurement Results ◽  
High Light Yield ◽  
Near Future

This paper proposes a new base material, a mixture of alcohol and water, for liquid scintillators. A possibility of using alcohol as a new detection solution in a particle detector is described. A liquid scintillator is widely used in various fields because of its high light yield. In addition, it is very important to develop a stable liquid scintillator for particle detectors or other medical applications. To date, there have been no previous R&D studies elsewhere for the use of alcohol in particle detectors, and no market products are available of this type. Thus, there is a room for improvement. This paper describes the brief synthesizing process of the alcohol-based liquid scintillator by varying the mixing ratio of each component that makes up the liquid scintillator. The several feasible physical and optical properties of an alcohol-based liquid scintillator were investigated and presented. Finally, as one of its applications, a range (beam-path length) measurement using an electron beam in medical physics is introduced after irradiating an alcohol-based liquid scintillator with electron beam energies of 6~12 MeV. The measurement results were compared with a Monte Carlo simulation, Novalis Tx, a phantom, and a CT image. In the near future, the new alcohol-based liquid scintillator could be used for particle detector or medical imaging applications.

Measurements of Scintillation Light Yield Non-proportionality in NaI(Tl) Detector

2021 ◽  
Author(s):  
Md. Shahinur Rahman ◽  
Wayne D. Hutchison ◽  
Lindsey Bignell ◽  
Gregory Lane ◽  
Lei Wang ◽  
...  
Keyword(s):  
Dark Matter ◽  
Liquid Scintillator ◽  
Light Yield ◽  
Recoil Energy ◽  
Detector Response ◽  
Scintillation Light ◽  
Coincidence Technique ◽  
Background Rejection ◽  
Ionization Density ◽  
Background Events

Abstract The SABRE (Sodium-iodide with Active Background Rejection) experiment consists of 50 kg of ultrapure NaI(Tl) crystal contained within a 10.5 ton liquid scintillator (LS) veto detector, and will search for dark matter interactions in the inner NaI(Tl) detector. The relative scintillation light yield in NaI(Tl) scintillator for different incident particle energies is not constant and is important for characterizing the detector response. The relative scintillation light yield in two different NaI(Tl) scintillators was measured with a 10 µCi 137Cs radioactive source using the Compton coincidence technique (CCT) for scattering angles 30? - 135? using electron energies ranging from 60 to 500 keVee, and these measurements are compared to the previously published results. Light yield was proportional within 3.5% at energies between 60 and 500 keVee, but non-proportionality increases drastically below 60 keVee which might be due to the non-uniform ionization density and multiple Compton scattering background events in the scintillator. An improved experimental setup with ultrapure NaI(Tl) scintillator and proper coincidence timing of radioactive events could allow scintillation light yield measurement at lower electron recoil energy. The obtained light yield non-proportionality results will be useful for the SABRE dark matter detector experiment.

scholarly journals JUNO sensitivity to low energy atmospheric neutrino spectra

2021 ◽  
Vol 81 (10) ◽  
Author(s):  
Angel Abusleme ◽  
Thomas Adam ◽  
Shakeel Ahmad ◽  
Rizwan Ahmed ◽  
Sebastiano Aiello ◽  
...  
Keyword(s):  
Liquid Scintillator ◽  
Detection System ◽  
Atmospheric Neutrino ◽  
Light Yield ◽  
Theoretical Models ◽  
Neutrino Energy ◽  
Low Energy ◽  
Atmospheric Neutrinos ◽  
Scintillation Light ◽  
Light Pattern

AbstractAtmospheric neutrinos are one of the most relevant natural neutrino sources that can be exploited to infer properties about cosmic rays and neutrino oscillations. The Jiangmen Underground Neutrino Observatory (JUNO) experiment, a 20 kton liquid scintillator detector with excellent energy resolution is currently under construction in China. JUNO will be able to detect several atmospheric neutrinos per day given the large volume. A study on the JUNO detection and reconstruction capabilities of atmospheric $$\nu _e$$ ν e  and $$\nu _\mu $$ ν μ  fluxes is presented in this paper. In this study, a sample of atmospheric neutrino Monte Carlo events has been generated, starting from theoretical models, and then processed by the detector simulation. The excellent timing resolution of the 3” PMT light detection system of JUNO detector and the much higher light yield for scintillation over Cherenkov allow to measure the time structure of the scintillation light with very high precision. Since $$\nu _e$$ ν e  and $$\nu _\mu $$ ν μ  interactions produce a slightly different light pattern, the different time evolution of light allows to discriminate the flavor of primary neutrinos. A probabilistic unfolding method has been used, in order to infer the primary neutrino energy spectrum from the detector experimental observables. The simulated spectrum has been reconstructed between 100 MeV and 10 GeV, showing a great potential of the detector in the atmospheric low energy region.

scholarly journals Preliminary study of light yield dependence on LAB liquid scintillator composition

2015 ◽  
Vol 39 (9) ◽  
pp. 096003 ◽  
Author(s):  
Xing-Chen Ye ◽  
Bo-Xiang Yu ◽  
Xiang Zhou ◽  
Li Zhao ◽  
Ya-Yun Ding ◽  
...  
Keyword(s):  
Liquid Scintillator ◽  
Light Yield ◽  
Preliminary Study

scholarly journals Characterization of water-based liquid scintillator for Cherenkov and scintillation separation

2020 ◽  
Vol 80 (9) ◽  
Author(s):  
J. Caravaca ◽  
B. J. Land ◽  
M. Yeh ◽  
G. D. Orebi Gann
Keyword(s):  
Large Scale ◽  
Liquid Scintillator ◽  
Light Yield ◽  
Time Profile ◽  
Pure Liquid ◽  
Scintillation Light ◽  
Linear Alkylbenzene ◽  
Water Based ◽  
Measured Time ◽  
Simple Extrapolation

AbstractThis paper presents measurements of the scintillation light yield and time profile for a number of concentrations of water-based liquid scintillator, formulated from linear alkylbenzene (LAB) and 2,5-diphenyloxazole (PPO). We find that the scintillation light yield is linear with the concentration of liquid scintillator in water between 1 and 10% with a slope of $$127.9\pm 17.0$$ 127.9 ± 17.0 ph/MeV/concentration and an intercept value of $$108.3\pm 51.0$$ 108.3 ± 51.0 ph/MeV, the latter being illustrative of non-linearities with concentration at values less than 1%. This is larger than expected from a simple extrapolation of the pure liquid scintillator light yield. The measured time profiles are consistently faster than that of pure liquid scintillator, with rise times less than 250 ps and prompt decay constants in the range of 2.1–2.85 ns. Additionally, the separation between Cherenkov and scintillation light is quantified using cosmic muons in the CHESS experiment for each formulation, demonstrating an improvement in separation at the centimeter scale. Finally, we briefly discuss the prospects for large-scale detectors.

scholarly journals Light Yield Enhancement of 157-Gadolinium Oxysulfide Scintillator Screens for the High-Resolution Neutron Imaging

MethodsX ◽  
2019 ◽  
Vol 6 ◽  
pp. 107-114 ◽  
Author(s):  
Jan Crha ◽  
Joan Vila-Comamala ◽  
Eberhard Lehmann ◽  
Christian David ◽  
Pavel Trtik
Keyword(s):  
High Resolution ◽  
Light Yield ◽  
Neutron Imaging ◽  
Yield Enhancement
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