INFN School on Underground Physics (SoUP2024)

Session

Poster Session

16 Oct 2024, 16:45

Sala Giovanni Andrea Caligari, Rocca Vescovile (CEUB, Bertinoro)

65. Analysis techniques for spotting 0vbb signals in LEGEND-200 data

Giovanna Saleh, Giovanna Saleh (Istituto Nazionale di Fisica Nucleare)

16/10/2024, 16:45

The LEGEND experiment searches for neutrinoless double beta decay (0vbb) in Germanium-76. Given the extreme rarity of this process, it is crucial to minimize the background and to develop effective analysis techniques to identify signal events. In particular, this poster focuses on Pulse Shape Discrimination (PSD) methods, which are optimized to identify signal events based on the shape of...

43. BULLKID: Array of particle absorbers sensed by Kinetic Inductance Detectors

Daniele Delicato

16/10/2024, 16:45

BULLKID is a R&D project aiming to pair an array of Kinetic Inductance Detectors with a diced silicon absorber, achieving mass scalability up o the Kg scale and high segmentation. An average baseline resolution of 𝟐𝟕 ± 𝟔 𝒆𝑽 makes it a suitable detector for low-energy processes such as direct interactions of dark matter and coherent elastic neutrino-nucleus scattering. The above ground...

57. Characterization and validation of SiPM for the DUNE Far Detector Photon Detection System

Elisabetta Montagna

16/10/2024, 16:45

This work is focused on the validation and test activities of the SiPMs for the DUNE experiment.The results obtained during a first down-selection envising a full characterization of the devices both at room and cryogenic temperatures (77 K), are reported. A campaign of validation of all the SiPMs (~300000) produced basing on these results, is currently ongoing. A description of the...

34. Coating based radon barriers for future liquid xenon detectors

Sophie Armbruster

16/10/2024, 16:45

Despite overwhelming evidence for dark matter in our universe, its true nature remains a mystery. In the search for direct detection, detectors using liquid xenon are currently leading in sensitivity. However, these experiments are increasingly limited by self-induced backgrounds, particularly the emanation of radon from detector materials. To address this challenge, a novel radon mitigation...

46. Construction of the inner detector of DArTinArDM

Daniel Díaz Mairena

16/10/2024, 16:45

To ensure the radiopurity of underground argon (UAr) for DarkSide-20k, the final version of the DArTinArDM experiment is being assembled at LSC in Spain. A 1-liter chamber, called DArT, will be filled with UAr and placed inside the ArDM detector, which will serve as an active veto. This setup is designed to measure depletion factors greater than 10,000 in the intrinsic activity of Ar-39. This...

61. Data-Driven Field Distortion Correction Maps for the XENONnT experiment

Ananthakrishnan Ravindran

16/10/2024, 16:45

The poster will present the methodology in creating the Field Distortion Correction maps for the data and simulation pipelines of the XENONnT experiment, primarily designed to serach for dark matter candidates. Those maps are necessary to correct the reconstructed position of an event, due to the non uniformity of the electric field within the detector. The poster will also present the...

63. Design and test of the lens based optical detector for SAND in the DUNE experiment

Silvia Repetto, Silvia Repetto (Istituto Nazionale di Fisica Nucleare)

16/10/2024, 16:45

This work focuses on the development and testing of prototypes for a novel optical detector designed for the GRAIN within the SAND detector. One of the two possibilities for the optical system is a two-lens focusing system composed of plano-convex lenses enclosing gas, paired with a 32×32 Silicon PhotoMultiplier (SiPM) array. This configuration allows for the efficient transmission and...

55. Detection of neutrinos from astronomical sources in JUNO

Marco Malabarba

16/10/2024, 16:45

JUNO (Jiangmen Underground Neutrino Observatory) is a 20 kton organic liquid scintillator detector currently under construction in south China. Its main goal is to determine the Neutrino Mass Ordering with ~3σ sensitivity through reactor antineutrinos. Furthermore, JUNO is also perfect to study neutrinos from natural sources, such as atmospheric, solar, geo- and supernova neutrinos. In this...

68. Development of a Trace Hydrogen Measurement Method for Quantitative Evaluation of Tritium Concentration in Liquid Xenon

Mitsuki Utoyama

16/10/2024, 16:45

We are making progress in developing a method to quantitatively evaluate the concentration of tritium in liquid xenon for the XENON/DARWIN experiment.

49. Development of Hermetic Xenon Time Projection Chamber for Reducing 222Rn Background

Koki Fujikawa

16/10/2024, 16:45

In direct dark matter searches with liquid xenon, the main background is the beta decay of 214Pb, the daughter nucleus of radioactive radon; in the DARWIN experiment, a future dark matter experiment using 50 tonnes of LXe, to reduce the radon background, the radon concentration in the detector 10% of XENONnT is required.
This poster presentation reports on the development of a hermetically...

51. Development of Position Reconstruction in the LUX-ZEPLIN Outer Detector

Tea Hall

16/10/2024, 16:45

Position reconstruction in the LZ Outer Detector is currently based on a centroid method. Due to this, positions are being mis-reconstructed. Accurate position reconstruction would allow for additional quantities in background discrimination, full mapping of light collection efficiencies and a reduced neutron veto dead-time. Two methods have been investigated: a TPC-like method with light...

56. Event reconstruction with machine learning techniques

Johannes Merz

16/10/2024, 16:45

The XENONnT Dark Matter Experiment is a dual phase TPC searching for nuclear recoil signals generated by WIMP dark matter. Interactions in the sensitive detector material result in a prompt light signal (S1) and a delayed secondary scintillation signal (S2), resulting from ionization electrons drifted in a moderate electric field to the liquid surface, where they are extracted to the gas phase...

60. JUNO calibration campaign for NMO determination

Elisa Percalli

16/10/2024, 16:45

JUNO (Jiangmen Underground Neutrino Observatory) is a neutrino detector, based on 20k tons of liquid scintillator, that will determine the neutrino mass ordering. Now the detector is very close to the start of data taking (in 2025) and teh calibration campaign wil be crucial for the understanding of the data. In my poster I will explain the detector and the proposed calibrations, and my work in it.

39. Laser calibration system at ProtoDUNE-HD

Wallison Campanelli

16/10/2024, 16:45

The Deep Underground Neutrino Experiment (DUNE) is a full experiment consisting of multiple detectors separated by a near and far site. DUNE will study long-baseline neutrino oscillations, which will provide insight into CP-violation, neutrino mass ordering, and the matter/antimatter asymmetry. Additionally, DUNE will search for nucleon decay and observe neutrinos from supernovae. DUNE relies...

36. LZ Calibrations: MCMC tuning of electron recoil interactions

Erin Barillier

16/10/2024, 16:45

The LUX-ZEPLIN (LZ) experiment is a 7-ton liquid xenon (LXe) direct detection dark matter experiment located a mile underground in the Sanford Underground Research Facility (SURF). The experiment looks for interaction signals of weakly interacting massive particles (WIMPs), one of the leading proposed models for dark matter. Searching for these signals requires very precise understanding of...

37. Measuring infrared light in xenon

Kai Boese

16/10/2024, 16:45

Xenon, a heavy noble gas, is an ideal target for direct dark matter detection. Several experiments utilize its ultraviolet scintillation to study interactions with nuclei and electrons. It is also known that gaseous xenon emits infrared light, which has been less extensively studied.
A major reason for this is the availability of sensors that meet the stringent sensitivity and radioactivity...

32. Migdal effect in dark matter direct detection

Aula Al-Adulrazzaq

16/10/2024, 16:45

40. Monitoring of LZ's Outer Detector and R&D for Next-Generation Experiments

Megan Carter

16/10/2024, 16:45

Covering the continued monitoring and stability of LUX-ZEPLINS outer-detector. As well as research into the potential use of WbLS in next generation experiments with Brookhavens 30Ton detector.

62. Novel Photo- detection systems in Liquid Argon TPCs SiPM - The ARIADNE and PHAIDRA experiment

Sudikshan Ravinthiran

16/10/2024, 16:45

47. Optimizing the TES design for diamond cryogenic detectors

Felix Dominsky

16/10/2024, 16:45

The CRESST experiment is one of the most sensitive experiments for the direct detection of light dark matter via nuclear recoils in a crystalline target. The mass range of dark matter particle candidates CRESST can probe is heavily influenced by the target material, with lighter elements being particularly advantageous for detecting lower mass dark matter. In this regard, diamonds emerged as a...

48. Physics reach of the BULLKID-DM experiment: background and sensitivity limits

Matteo Folcarelli

16/10/2024, 16:45

BULLKID-DM is a new detector concept for direct dark matter research, aimed at controlling backgrounds by creating a fully active array of detectors. It will be composed of more than 2,000 silicon dice, sensed by cryogenic phonon-mediated kinetic inductance detectors (KIDs). In this poster, I present the expected background and the projected sensitivity, to WIMP signals, for the final...

35. ProtoDUNE-HD Photon Detection System: IV curve and Vbd determination

Anna Balboni

16/10/2024, 16:45

The ProtoDUNE-HD detector is a horizontal drift (HD) liquid argon time projection chamber (LArTPC) that was constructed and operated in the CERN North Area during summer 2024. It is a prototype for the first far detector (FD) module of the Deep Underground Neutrino Experiment (DUNE), a next-generation long-baseline experiment for neutrino physics under construction in US. The successful...

67. R&D Towards Next Generation Dark Matter Experiment at Boulby

Jemima Tranter

16/10/2024, 16:45

Rare event experiments, such as those targeting dark matter interactions and neutrinoless double beta decay (0νββ), should be shielded from ɣ-rays originating in rock. This poster presents the simulation of gamma-ray transport through water shielding and assessment of the water thickness needed to suppress the background from rock down to a negligible level. The simulation studies the...

41. Reactor antineutrino analysis in JUNO

Ze Chen

16/10/2024, 16:45

The JUNO experiment is a detector composed of 20kton liquid scintillator. Its main goal is to determine the neutrino Mass Ordering in 6 years data-taking. To achieve this, it targets reactor antineutrino at a medium baseline. In this poster, a overview of the whole analysis workflow is presented.

38. Reflectivity measurements of VUV light at the scintillation wavelength of xenon on XENON1T/nT PTFE samples

Robert Braun

16/10/2024, 16:45

Rare event searches as performed with liquid xenon (LXe) detectors demand a precise knowledge of the employed materials. Measurements of optical properties at the xenon scintillation wavelength in the VUV region are required for accurate simulations and detector characterization. Reflection measurements of polytetrafluorethylen (PTFE) were conducted in vacuum, gaseous and liquid xenon using...

53. SABRE-North Experiment for Dark Matter detection

Sana Gul Khattak

16/10/2024, 16:45

The SABRE experiment aims to detect dark matter by improving upon DAMA/LIBRA's annual modulation signal using ultra-pure NaI(TI) crystals to reduce the background noise from contamination such as 40K, 238U, 232Th through advanced zone-refining techniques and high-purity crystal production. With detectors in both hemispheres, SABRE can distinguish dark matter signals from seasonal effects,...

50. Searching for Coherent Elastic Neutrino-Nucleus Scattering (CEvNS) with the NUCLEUS detectors

Marco Giammei

16/10/2024, 16:45

My Ph.D. research focuses on the NUCLEUS experiment, which aims to precisely measure coherent elastic neutrino-nucleus scattering (CEvNS) using reactor neutrinos at the Chooz power plant in France. This experiment employs transition-edge sensors (TESs) to detect the energy deposited by neutrinos into CaWO4 and Al2O3 substrates. Operated at 10mK within a dry dilution cryostat, our cryogenic...

59. Searching for dark matter in high energy nuclear recoils at the Lux Zeplin experiment.

Nathan Pannifer

16/10/2024, 16:45

The standard dark matter search performed by LZ looks spin independent dark matter interactions in low energy xenon nuclear recoils. However, interactions at higher energies are possible and can be interpreted through the lens of effective field theory. Our plan for the high energy nuclear recoil search using data from LZ’s most recent science run is presented.

54. Solar Neutrino Studies in JUNO

Ujwal Konissery Santhosh

16/10/2024, 16:45

JUNO (Jiangmen Underground Neutrino Observatory) is highly sensitive to solar neutrinos across a broad spectrum of energies. Due to its large volume and exceptional radiopurity, JUNO is uniquely positioned to detect and study neutrinos produced in various stages of solar fusion processes. The detector's ability to capture low-energy solar neutrinos, in particular, provides valuable insights...

45. STAR: a cryogenic LXe test facility for the characterization of innovative electrodes for the DARWIN experiment

Chiara Di Donato

16/10/2024, 16:45

This work is based on the realization of a cryogenic test facility (STAR) with a noble liquid single phase TPC of small dimensions and the design and production of innovative electrode prototypes, that could possibly solve the difficulties related to the realization and correct functioning of the very large electrodes needed for DARWIN, the next-generation Xenon based dual-phase time...

69. Study of impact of an aluminium layer as a shield against magnetic fields

Marco Maria Zanirato

16/10/2024, 16:45

The CRESST experiment aims to search for rare events by using Transition Edge Sensors (TES) made out of a superconducting thin layer of tungsten as super-sensitive thermometers. The superconducting properties of a material depend on both its temperature and on the magnetic field applied to it. While the temperature stability of the sensors is very well achieved by the design of the experiment,...

42. The CRESST experiment

Eleonora Rebecca Cipelli

16/10/2024, 16:45

CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) is a dark matter experiment located at the Gran Sasso (LNGS) underground laboratory in Italy. It uses cryogenic detectors (temperature O(mK)) equipped with Transition Edge Sensors (TESs) to directly search for dark matter in the sub-GeV mass range. The extremely low threshold and high energy resolution achieved confirm...

52. The Cygno Experiment

Dr Zahoor ul Islam

16/10/2024, 16:45

The CYGNO experiment aims at the development of a high-resolution gaseous Time Projection Chamber (TPC) with an optical readout, operated at atmospheric pressure and room temperature, for rare events searches. The gas of choice is a mixture of helium and carbon tetrafluoride, and the primary charge amplification is performed with Gas Electron Multipliers (GEMs) .

44. The ever elusive blazar host galaxies: a guide to their characterisation

Gaia Delucchi

16/10/2024, 16:45

One of the fundamental characteristics of blazars is their central black hole mass. In absence of broad emission lines, which is the case for the majority of blazars (i.e. BL Lacs), the black holes mass is estimated by analysing the luminosity of the host galaxies. To date, these galaxies are thought to be massive and luminous ellipticals, but the data sample supporting this conclusion is...

33. The Gd-loaded Neutron Veto of XENONnT experiment

Emanuele Angelino

16/10/2024, 16:45

The XENONnT Neutron Veto is a Gd-loaded water Cherenkov detector designed to reduce radiogenic neutron background in the XENONnT dark matter search. Initially operating with demineralized water, Gd was introduced using a dedicated system for recirculation and purification of the Gd-loaded water. Details of the Gd insertion process and the first results from an AmBe neutron calibration are...

66. The neutrinoless double beta decay experiment LEGEND- R&D on wavelength shifting materials for the liquid argon instrumentation

Gloria Senatore

16/10/2024, 16:45

The neutrinoless double beta decay is a process beyond the Standard Model of particle physics, in which a nucleus undergoes a double beta decay without any neutrinos in the final state. If this reaction is observed, the Majorana nature of the neutrino will be established (a fermion is a Majorana particle if it coincides with its own antiparticle). Moreover, this reaction would have important...

64. The tracking system of SAND at the DUNE Near Detector

Alessandro Ruggeri

16/10/2024, 16:45

The SAND detector at the DUNE Near Detector Complex will be capable of studying neutrino interactions on different nuclear targets with its inner STT tracker. STT will combine a relatively large target mass (about 5 t) with high spatial and momentum resolution using light gas detectors. This poster will present the physics program of the SAND tracker and the current status of the design and...

58. Weak decay search with XENONnT

Sana Ouahada

16/10/2024, 16:45

In the context of the first search for neutrinoless double electron capture with XENONnT, this poster presents preliminary work on high-energy cleaning cuts applied to calibration runs. These efforts aim to support this search and future high-energy analyses.