Extraction methods in development of Gd-loaded liquid scintillators for detection of low-energy antineutrino: 1. gadolinium extraction with carboxylic acids

Данилов, Н. А.; Yanovich, E.; Nesterova, N. P.; Костикова, Г. В.; Tsivadze, А. Yu.; Bezrukov, L.; Барабанов, И. Р.; Cattadori, C.; Novikova, G. Ya.; Krylov, Yu. S.; Vacri, A. di

doi:10.1134/s1066362207030137

Cited by 12 publications

(10 citation statements)

References 2 publications

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“…The molecular formula found for the indium complexes is In(MVA) 2 (OH). This composition is consistent with results from independent studies extracting the indium at a similar pH value around 6.9 [57]. After production there are mainly monomers, but after several months dimers, trimers and other oligomers could be identified in the LS.…”

Section: Lenssupporting

confidence: 91%

Metal-loaded organic scintillators for neutrino physics

Buck

Yeh

2016

J. Phys. G: Nucl. Part. Phys.

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Organic liquid scintillators are used in many neutrino physics experiments of the past and present. In particular for low energy neutrinos when realtime and energy information are required, liquid scintillators have several advantages compared to other technologies. In many cases the organic liquid needs to be loaded with metal to enhance the neutrino signal over background events. Several metal loaded scintillators of the past suffered from chemical and optical instabilities, limiting the performance of these neutrino detectors. Different ways of metal loading are described in the article with a focus on recent techniques providing metal loaded scintillators that can be used under stable conditions for many years even in ton scale experiments. Applications of metal loaded scintillators in neutrino experiments are reviewed and the performance as well as the prospects of different scintillator types are compared.

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Section: Lenssupporting

confidence: 91%

Metal-loaded organic scintillators for neutrino physics

Buck

Yeh

2016

J. Phys. G: Nucl. Part. Phys.

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“…They show slightly different characteristics, the higher percentage of aromatics causing a higher light yield [25]. For both of them the light attenuation length at 425 nm, is Λ ≥ 16 m. A 15 kg batch of the organic Gd compound (Gd-2Methylvalerate) was prepared at LNGS chemical laboratory in spring 2005, following the recipe developed [17]. Thanks to the simplicity and high reproducibility of the developed formulation [25], the whole 15 kg batch has been produced in one month using laboratory equipment.…”

Section: Properties Of the Liquid Scintillator And The Adopted Gd Dopmentioning

confidence: 99%

Performances and stability of a 2.4 ton Gd organic liquid scintillator target for ν̄_edetection

Барабанов¹,

Bezrukov²,

Cattadori³

et al. 2010

J. Inst.

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In this work we report the performances and the chemical and physical properties of a 2 × 1.2 ton organic liquid scintillator target doped with Gd up to∼ 0.1%, and the results of a 2 year long stability survey. In particular we have monitored the amount of both Gd and primary fluor actually in solution, the optical and fluorescent properties of the Gd-doped liquid scintillator (GdLS) and its performances as a neutron detector, namely neutron capture efficiency and average capture time. The experimental survey is ongoing, the target being continuously monitored. After two years from the doping time the performances of the Gd-doped liquid scintillator do not show any hint of degradation and instability; this conclusion comes both from the laboratory measurements and from the in-tank measurements. This is the largest stable Gd-doped organic liquid scintillator target ever produced and continuously operated for a long period.PACS. 23.40.Bw antineutrino detection -29.40.Mc Gadolinium liquid scintillator detector arXiv:0803.1577v1 [physics.ins-det]

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“…It is commonly known that the chemical stability of the Gd-LS is the key to the success of a reactor antineutrino experiment. Previous studies have identified that gadolinium could be either extracted or dissolved into a scintillator through chelating ligands, such as phorsphors, β-diketones, or carboxylates [4][5][6][7][8][9]. The Daya Bay collaboration uses linear alkylbenzene (LAB), a straight alkyl chain of 10-13 carbons attached to a benzene ring [10], as the detection medium due to its high flash point, low chemical reactivity, and light-yield comparable with other scintillators (e.g.…”

Section: Introductionmentioning

confidence: 99%

Production of a gadolinium-loaded liquid scintillator for the Daya Bay reactor neutrino experiment

Beriguete

Cao

Ding

et al. 2014

Nuclear Instruments and Methods in Physics Research Section A:

108

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We report on the production and characterization of liquid scintillators for the detection of electron antineutrinos by the Daya Bay Reactor Neutrino Experiment. One hundred eighty-five tons of gadolinium-loaded (0.1% by mass) liquid scintillator (Gd-LS) and two hundred tons of unloaded liquid scintillator (LS) were successfully produced from a linear-alkylbenzene (LAB) solvent in six months. The scintillator properties, the production and purification systems, and the quality assurance and control (QA/QC) procedures are described.

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Extraction methods in development of Gd-loaded liquid scintillators for detection of low-energy antineutrino: 1. gadolinium extraction with carboxylic acids

Cited by 12 publications

References 2 publications

Metal-loaded organic scintillators for neutrino physics

Metal-loaded organic scintillators for neutrino physics

Performances and stability of a 2.4 ton Gd organic liquid scintillator target for ν̄_edetection

Production of a gadolinium-loaded liquid scintillator for the Daya Bay reactor neutrino experiment

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Extraction methods in development of Gd-loaded liquid scintillators for detection of low-energy antineutrino: 1. gadolinium extraction with carboxylic acids

Cited by 12 publications

References 2 publications

Metal-loaded organic scintillators for neutrino physics

Metal-loaded organic scintillators for neutrino physics

Performances and stability of a 2.4 ton Gd organic liquid scintillator target for ν̄edetection

Production of a gadolinium-loaded liquid scintillator for the Daya Bay reactor neutrino experiment

Contact Info

Product

Resources

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Performances and stability of a 2.4 ton Gd organic liquid scintillator target for ν̄_edetection