Электронный каталог

Статья

Balibrea-Correa, J.
Towards a New Generation of Solid Total-Energy Detectors for Neutron-Capture Time-of-Flight Experiments with Intense Neutron Beams / J.Balibrea-Correa, V.Furman, Y.Kopatch, [a.o.] // Nuclear Instruments & Methods in Physics Research A [Electronic resource]. – 2025. – Vol. 1072. – P. 170110. – URL: https://doi.org/10.1016/j.nima.2024.170110. – Bibliogr.: 58.

Challenging neutron-capture cross-section measurements of small cross sections and samples with a very limited number of atoms require high-flux time-of-flight facilities. In turn, such facilities need innovative detection setups that are fast, have low sensitivity to neutrons, can quickly recover from the so-called *g- flash, and offer the highest possible detection sensitivity. In this paper, we present several steps towards such advanced systems. Specifically, we describe the performance of a high-sensitivity experimental setup at CERN n_TOF EAR2. It consists of nine sTED detector modules in a compact cylindrical configuration, two conventional used large-volume C&sub(6)D&sub(6) detectors, and one LaCl&sub(3)(Ce) detector. The performance of these detection systems is compared using &sup(93)Nb(𝑛, *g) data. We also developed a detailed Geant4 Monte Carlo model of the experimental EAR2 setup, which allows for a better understanding of the detector features, including their efficiency determination. This Monte Carlo model has been used for further optimization, thus leading to a new conceptual design of a 𝛾 detector array, STAR, based on a deuterated-stilbene crystal array. Finally, the suitability of deuterated-stilbene crystals for the future STAR array is investigated experimentally utilizing a small stilbene-d12 prototype. The results suggest a similar or superior performance of STAR with respect to other setups based on liquid-scintillators, and allow for additional features such as neutron-gamma discrimination and a higher level of customization capability.



Спец.(статьи,препринты) = С 344.1м - Полупроводниковые детекторы
Спец.(статьи,препринты) = С 343 г - Взаимодействие нейтронов с ядрами
ОИЯИ = ОИЯИ (JINR)2025