Present and Future of 0ν2β Searches with Germanium

Burlac, Nina; Salamanna, G.

doi:10.3390/universe7100386

Cited by 6 publications

(4 citation statements)

References 29 publications

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“…Thus, an improvement of one order of magnitude with respect to GERDA background levels (< 10 −3 cts/(keV • kg • yr)) is targeted [15]. In order to accomplish this background index, a maximum radioimpurity of 1 μBq/holder can be tolerated [16][17][18]. To demonstrate that the radiopurity achieved in this PEN production meets the requirement for usage in the L -200 experiment, independent radiopurity measurements were carried out: HPGe screening, ICP-MS and radon emanation measurements were performed.…”

Section: Radiopurity Of Produced Pen Discs and Finished Holdersmentioning

confidence: 99%

Production and validation of scintillating structural components from low-background Poly(ethylene naphthalate)

Efremenko¹,

Febbraro²,

Fischer³

et al. 2022

J. Inst.

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Poly Ethylene Naphthalate (PEN) is an industrial polymer plastic which is investigated as a low background, transparent, scintillating and wavelength shifting structural material. PEN scintillates in the blue region and has excellent mechanical properties both at room and cryogenic temperatures. Thus, it is an ideal candidate for active structural components in experiments for the search of rare events like neutrinoless double-beta decay or dark matter recoils. Such optically active structures improve the identification and rejection efficiency of backgrounds events, like this improving the sensitivity of experiments. This paper reports on the production of radiopure and transparent PEN plates These structures can be used to mount germanium detectors operating in cryogenic liquids (LAr, LN). Thus, as first application PEN holders will be used to mount the Ge detectors in the Legend-200 experiment. The whole process from cleaning the raw material to testing the PEN active components under final operational conditions is reported.

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Section: Radiopurity Of Produced Pen Discs and Finished Holdersmentioning

confidence: 99%

Production and validation of scintillating structural components from low-background Poly(ethylene naphthalate)

Efremenko¹,

Febbraro²,

Fischer³

et al. 2022

J. Inst.

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“…The Gerda [2] and Majorana [3] experiments paved the way for a new-generation experiment, the Large Enriched Germanium Experiment for Neutrinoless Double Beta Decay (LEGEND) [4][5][6]. The experiment will be phased: LEGEND-200 and LEGEND-1000 will search for 0𝜈𝛽𝛽 decay in 76 Ge using 200 kg and 1000 kg of enriched germanium detectors, respectively.…”

Section: Legend Projectmentioning

confidence: 99%

Neutrinoless double beta decay search with LEGEND-200 experiment

Burlac¹

2022

Proceedings of 41st International Conference on High Energy Physics — PoS(ICHEP2022)

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The search for neutrinoless double beta decay is a topic of broad and current interest in modern physics. Its discovery would prove unambiguously not only the existence of new lepton-number violating physics but also its connection to the origin of neutrino mass. The LEGEND collaboration follows the Gerda and Majorana collaborations and works to develop the largest 76 Ge based neutrinoless double beta decay decay experiment. As a first phase, the LEGEND-200 experiment is being installed in the upgraded Gerda infrastructure at Laboratori Nazionali del Gran Sasso of INFN. It is based on 200 kg of high-purity germanium detectors and aims to reach a discovery sensitivity on the neutrinoless double beta decay half-life of 10 27 years. An overview of the LEGEND-200 setup and its status will be provided.

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“…Several experiments [1,2] take advantage of various technologies to search for this rare transition using different isotopes, such as: 76 Ge, 82 Se, 100 Mo, 130 Te and 136 Xe [3]. The latest G results lead the 0𝜈𝛽𝛽 decay field, reporting the highest sensitivity on the half-life of 0𝜈𝛽𝛽 decay (1.8 × 10 26 yr for 76 Ge isotope) and the lowest background index at the Q-value of the decay (5.2 × 10 −4 cts/(keV kg yr)) [4].…”

Section: Introductionmentioning

confidence: 99%

The Front-End electronics for the liquid Argon instrumentation of the LEGEND-200 experiment

Abritta Costa,

Budano,

Burlac

et al. 2023

J. Inst.

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In this paper we provide a detailed technical description of the Front-End (FE) electronics for the liquid Argon instrumentation of the LEGEND-200 experiment, searching for the very rare, hypothetical neutrinoless double β decay process at the Italian Laboratori Nazionali del Gran Sasso. The design stems from the need to read out the silicon photo-multiplier response to the scintillation light in the liquid Argon with excellent single-photon resolution. The FE electronics is required to be placed far from the detectors to meet the experiment's radio-purity constraints. This constraint represents a challenge for a high signal-to-noise ratio. We address how this could be achieved in a stable way. The system was installed in July 2021 and has been commissioned with the rest of LEGEND-200, proving we could attain a very low overall level of electrical noise of 250 μV peak-to-peak.

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Present and Future of 0ν2β Searches with Germanium

Cited by 6 publications

References 29 publications

Production and validation of scintillating structural components from low-background Poly(ethylene naphthalate)

Production and validation of scintillating structural components from low-background Poly(ethylene naphthalate)

Neutrinoless double beta decay search with LEGEND-200 experiment

The Front-End electronics for the liquid Argon instrumentation of the LEGEND-200 experiment

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