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The ReD experiment for low-energy nuclear recoils in a liquid argon TPC
Get PDFThe Recoil Directionality project (ReD) within the Global Argon Dark Matter Collaboration aims to characterize the response of a liquid argon (LAr) Time Projection Chamber (TPC) to neutron-induced nuclear recoils and to measure the charge yield for low-energy recoils. The charge yield is a critical parameter for the experiments searching for dark matter in the form of low-mass WIMPs and measurements in argon below 10 keV are scarce in the literature. This project
covers the gap down to 2 keV
20Ne+130Te collision in a multi-channel approach: Recent results and experimental challenges towards the NUMEN next phase
Get PDFThe NUMEN (NUclear Matrix Elements for Neutrinoless double
beta decay) project aims to access information on the neutrinoless double beta decay nuclear matrix elements through the study of the heavy-ion induced double charge
exchange reactions for all ββ decay candidate targets. Since 130Te is a candidate nucleus for ββ decay, the 20Ne + 130Te collision was experimentally investigated in a multi-channel approach by measuring the double charge exchange reaction and the complete net of reaction channels characterized by the same initial state interaction. The goal of such a study is to fully characterize the properties of the nuclear
wave functions entering in the 0νββ decay nuclear matrix elements. The relevant experimental campaign was carried out at INFN-Laboratori Nazionali del Sud in Catania, Italy by using the Superconducting Cyclotron to accelerate the heavy ion beams and the MAGNEX magnetic spectrometer to detect the reaction ejectiles. The experimental challenges and the obtained results for the collision under study are briefly presented and discussed
Tagging long-lived radioactive isotopes produced through cosmic-ray muon spallation in KamLAND
Get PDFThe most stringent limit on the neutrinoless double beta decay half-life of 136Xe is set by KamLAND-Zen at T1/2 > 2.3 × 1026yr. The experiment’s sensitivity is limited by long-lived radioactive isotopes produced from muon spallation of xenon nuclei in the xenon-doped liquid scintillator. The long lifetimes of the isotopes, typically up to several days, challenge the creation of an efficient tagging method, currently achieving only 42 ± 8.8%. We summarise the tagging techniques for both light and heavy spallation isotopes employed in KamLAND-Zen, and high-light the critical role of FLUKA simulations in developing new veto strategies
CQArchaeo: a Python package for Cosine Quantogram Analysis and Monte Carlo simulations
Get PDFCosine Quantogram Analysis (CQA) is a statistical analysis employed in archaeology for the study of numerical datasets with hypothesized quantal distribution. To verify thesignificance of the results, the analysis is often combined with the execution of Monte Carlo simulations. In this article, we present a freely downloadable Python package (CQArchaeo) that integrates CQA and Monte Carlo simulations in the same environment, making the analysis customizable in the main parameters. We provide a guide that enables the use of this tool even for researchers with limited experience in Python programming and demonstrate the applicability, functioning, and main limitations of the analysis on some archaeological datasets
Application of integrated 3D survey technologies in an Etruscan necropolis: the case of Sasso Pinzuto (Tuscania, VT)
Get PDFThe aim of this paper is to present the results of the research undertaken through a series of on-site surveys (2021-2023) at the Sasso Pinzuto site, located approximately 1 km SE of Tuscania (Viterbo, Italy). Situated along the eastern side of the Marta river valley, the necropolis layout is little known but it is extensive, including ca. 100 rock-cut chamber tombs. The 2021-22 archaeological campaigns started with a new topographical survey of the site and investigated two areas conventionally defined the Northern and the Southern Area. In the Northern Area, specifically within the vicinity of Tumulus 1, fragments of mould-decorated architectural plaques from a building discovered. In the Southern Area, a small plateau about 90 m from the Northern Area, four burial graves (n. 126, 127, 128, 130) and two chamber tombs (125 and 129) were excavated. This study sheds light to the great potential of applying digital technologies for a new understanding of the Etruscan tombs. Indeed, by using various non-destructive prospecting methods (aerial photogrammetry, fieldwalking survey, architectural drawings), coupled with precise location using RTK GNSS, and integration of legacy data in GIS, the site underwent a comprehensive reexamination
BIM e archeologia: i casi studio degli anfiteatri romani di Verona e Pola
Get PDFIn recent years, the experience gained in the field of historical built heritage has led scholars to propose Building Information Modeling as a new approach to archaeological research, fostering the birth and development of a new method to be ascribed to the vast family of BIM processes: ArchaeoBIM. What are the advantages and limitations of this technique? What specific skills does it require? What is its value in terms of costs and benefits? What difficulties does it present? To what results does it lead? The following contribution aims to answer these questions and to analyse the potential, advantages and limits of this particular field of application of BIM through the presentation of two case studies, namely the Roman amphitheatres of Verona and Pula, for each of which a BIM model has been created based on data obtained through traditional archaeological research methods. To this end, after an excursus on the genesis and development of BIM and its application to contexts belonging to the historical built environment and archaeology, the workflow followed, the tools used, the difficulties encountered and the results obtained will be illustrated for each case study
Procedura da seguire in caso di comunicazione di assenza per malattia CNR – ISMAR S.S. di Napoli
Get PDFIl documento è finalizzato ad assistere il personale di ISMAR-Napoli nella procedura da seguire in caso di assenza per malattia, nel rispetto delle disposizioni contenute nella Circolare CNR n. 4/2018 “Modalità per lo svolgimento delle visite fiscali e per l'accertamento delle assenze dal servizio per malattia, individuazione delle fasce orarie di reperibilità. DPCM - DFP n. 206/2017” (protocollo n. 0006569/2018 del 29/01/2018), nonché a fornire le necessarie indicazioni inerenti alle comunicazioni da trasmettere, la tempistica, le modalità, le fasce orarie di reperibilità
Latest VBS and VBF results with the ATLAS and CMS experiments
Get PDFVector Boson Scattering and Fusion processes are crucial to probe the electroweak sector of the Standard Model, as they are sensitive to self-couplings of vector bosons. This review summarizes the latest measurements of production cross sections of vector bosons in association with two jets, performed using data collected by the ATLAS and CMS experiments at
Vs = 13 TeV during the LHC Run 2 data taking period
Indirect methods: A bridge between nuclei and stars
Get PDFNuclear reactions in stars generally take place at energies well below 1 MeV, therefore the Coulomb barrier exponentially suppresses the cross section down to values as small as few nanobarns in the case of charged particles. This makes it very difficult to provide accurate input data for astrophysics so indirect methods have been introduced. In particular, the ANC and the THM techniques have been used to deduce the cross sections of reactions with photons and charged particles in the exit channel, respectively, with no need of extrapolation. Recent results of the application of the two methods are discussed: the 6Li(3He,d)7Be measurement used to deduced the ANC’s of the 3He + 4He→ 7Be and p + 6Li → 7Be channels and the corresponding radiative-capture cross sections. The THM measurement of the 27Al(p,α)24Mg cross section through the 2H(27Al,α 24Mg)n reaction is also illustrated. In both cases, we were able to establish the cross section at astrophysical energies with unprecedented accuracy
Current status and physics prospects of the JUNO experiment
Get PDFhe Jiangmen Underground Neutrino Observatory (JUNO) is a mul- tipurpose neutrino experiment currently under construction in South China. The detector consists of a 20 kton liquid scintillator target, contained inside a 35-meter- diameter spherical acrylic vessel submerged in an ultra-pure water pool. The central detector is equipped with 17612 20-inch photomultipliers and 25600 3-inch photo- multipliers, providing a total photocatode coverage of ≃ 78%. The experiment is primarily designed for the determination of neutrino mass ordering, through the measurement of the oscillation pattern of electron antineutrinos emitted from two nuclear power plants, at a baseline of about 52.5 km. In order to achieve high sta- tistical significance (∼ 3 − 4σ) in ∼ 6 years of data taking, an energy resolution ≤ 3% at 1 MeV is needed. JUNO will play a pivotal role in oscillation physics, measuring three oscillation parameters (sin2(θ12), Δm212, Δm232) with sub-percent precision. Moreover, the experiment will be able to detect neutrinos from sev- eral other sources, including solar neutrinos, atmospheric neutrinos, geoneutrinos, and core-collapse supernova neutrinos, opening up many research opportunities in physics and astrophysics. This contribution reviews the physics goals and current status of the JUNO project