Электронный каталог

Книга (аналит. описание)

Abritta, I.
The LEGEND-200 Liquid Argon Instrumentation: from a Simple Veto to a Full-Fledged Detector / I.Abritta, K.Gusev, N.Rumyantseva, E.Shevchik, D.Zinatulina, [a.o.] // XVIII International Conference on Topics in Astroparticle and Underground Physics (TAUP2023), Vienna, 28 August - 01 September 2023 [Electronic resource] / Ed.: V.Mokina. – Trieste : SISSA, 2024. – P. 256. – URL: https://doi.org/10.22323/1.441.0256. – Bibliogr.: 5.

LEGEND-200 is an experiment designed to search for neutrinoless double beta decay of 76 Ge by operating up to 200 kg of enriched germanium detectors in liquid argon (LAr). To achieve ultra-low backgrounds, the LAr is instrumented to detect scintillation light emitted upon interactions with ionizing radiation, thus tagging and rejecting backgrounds. The LAr scintillation light is detected with wavelength-shifting fibers coupled to silicon photomultiplier (SiPM) arrays. In this document, we demonstrate the high photoelectron resolution and low noise level of the SiPM signals. We also present the results of special calibration runs performed to determine the light yield and background suppression factors. We show the background suppression performance of the LAr instrumentation on the LEGEND-200 background spectrum before and after the LAr light coincidence cut. Finally, we present the event topology classifier which enables effective particle discrimination, allowing the identification of background types in LEGEND-200. – (Proceedings of Science ; Vol. 441) .



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 344.1ж - Сцинтилляционные счетчики, камеры. Сцинтилляционные вещества. Микроканальные умножители
Спец.(статьи,препринты) = С 341.1б - Бета-распад и К-захват. Схемы распада и спектры