A. Mariani
A5065022735- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Advanced MEMS and NEMS Technologies
- Neutrino Physics Research
- Radiation Effects in Electronics
- Advanced Fiber Optic Sensors
- Cosmology and Gravitation Theories
- Quantum and electron transport phenomena
- Mechanical and Optical Resonators
- Electromagnetic Compatibility and Measurements
- Radio Astronomy Observations and Technology
- Scientific Research and Discoveries
- Inflammatory Bowel Disease
- Digital Radiography and Breast Imaging
- Radiomics and Machine Learning in Medical Imaging
- Coronary Interventions and Diagnostics
- Optical Coherence Tomography Applications
- Quantum Computing Algorithms and Architecture
- Graphite, nuclear technology, radiation studies
- Quantum Information and Cryptography
- Education Systems and Policy
- Retinal Imaging and Analysis
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2019-2024
Fermi National Accelerator Laboratory
2024
Princeton University
2021-2023
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2020-2023
Gran Sasso Science Institute
2019-2021
Vita-Salute San Raffaele University
2006
SABRE aims to directly measure the annual modulation of dark matter interaction rate with NaI(Tl) crystals. A compatible standard hypothesis in which our Galaxy is embedded a halo has been measured by DAMA experiment same target material. Other direct detection experiments, using different materials, seem exclude interpretation such simplest scenario WIMP-nucleon elastic scattering. The carry out an independent search sufficient sensitivity confirm or refute claim. concept and goal obtain...
Ultra-pure NaI(Tl) crystals are the key element for a model-independent verification of long standing DAMA result and powerful means to search annual modulation signature dark matter interactions. The SABRE collaboration has been developing cutting-edge techniques reduction intrinsic backgrounds over several years. In this paper we report first characterization 3.4 kg crystal, named NaI-33, performed in an underground passive shielding setup at LNGS. NaI-33 record low $^{39}$K contamination...
Abstract Radioactivity was recently discovered as a source of decoherence and correlated errors for the real-world implementation superconducting quantum processors. In this work, we measure levels radioactivity present in typical laboratory environment (from muons, neutrons, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> -rays emitted by naturally occurring radioactive isotopes) most commonly used materials assembly operation...
Abstract In this technical design report (TDR) executive summary we describe the SABRE South detector to be built at Stawell Underground Physics Laboratory (SUPL). The is designed test long-standing DAMA/LIBRA signal of an annually modulating rate consistent with dark matter by using same target material. Located in Southern Hemisphere, uniquely positioned disentangle seasonal effects. uses seven ultra-high purity NaI(Tl) crystals (with a total mass either 35 kg or 50 kg), hermetically...
Abstract SABRE (Sodium iodide with Active Background REjection) is a direct detection dark matter experiment based on arrays of radio-pure NaI(Tl) crystals. The aims at achieving an ultra-low background rate and its primary goal to confirm or refute the results from DAMA/LIBRA experiment. Proof-of-Principle phase was carried out in 2020–2021 Gran Sasso National Laboratory (LNGS), Italy. next consists two full-scale experiments: South Stawell Underground Physics Laboratory, Australia, North...
We present new results on the radiopurity of a 3.4-kg NaI(Tl) crystal scintillator operated in SABRE proof-of-principle detector setup. The amount potassium contamination, determined by direct counting radioactive $^{40}$K, is found to be $2.2\pm1.5$ ppb, lowest ever achieved for crystals. With active veto, average background rate 1-6 keV energy region-of-interest (ROI) $1.20\pm0.05$ counts/day/kg/keV, which breakthrough since DAMA/LIBRA experiment. Our model indicates that dominated...
SABRE (Sodium iodide with Active Background REjection) is a direct detection dark matter experiment based on arrays of radio-pure NaI(Tl) crystals. The aims at achieving an ultra-low background rate and its primary goal to confirm or refute the results from DAMA/LIBRA experiment. Proof-of-Principle phase was carried out in 2020-2021 Gran Sasso National Laboratory (LNGS), Italy. next consists two full-scale experiments: South Stawell Underground Physics Laboratory, Australia, North LNGS. This...
Abstract We present here a characterization of the low background NaI(Tl) crystal NaI-33 based on period almost one year data taking (891 kg $$\times $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>×</mml:mo> </mml:math> days exposure) in detector configuration with no use organic scintillator veto. This remarkably radio-pure already showed SABRE Proof-of-Principle (PoP) detector, energy region interest (1–6 keV) for search dark matter interaction via annual modulation...
We present the characterization of a low background NaI(Tl) crystal for SABRE North experiment. The NaI-33, was studied in two different setups at Laboratori Nazionali del Gran Sasso, Italy. Proof-of-Principle (PoP) detector equipped with liquid scintillator veto and collected data about one month (90 kg \times <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo>×</mml:mo></mml:math> days). PoP-dry setup consisted NaI-33 purely passive shielding almost year (891...
Environmental radioactivity and cosmic-rays have recently been identified as a source of decoherence in super-conducting quantum bits (qubits). In particular, the absorption cosmic-ray muons gamma rays emitted by naturally occurring radioactive isotopes qubit substrate leads to correlated errors superconducting processors, posing significant challenges error correction. To enable computing scale, it is therefore necessary devel-opment mitigation strategies prevent, or keep under control,...
Superconducting qubits can be sensitive to abrupt energy deposits caused by cosmic rays and ambient radioactivity. Previous studies have focused on understanding possible correlated effects over time distance due rays. In this study, for the first time, we directly compare response of a transmon qubit measured initially at Fermilab SQMS above-ground facilities then deep underground Gran Sasso Laboratory (INFN-LNGS, Italy). We observe same average lifetime T$_1$ roughly 80 microseconds above...
Superconducting qubits can be sensitive to sudden energy deposits caused by ambient radioactivity and cosmic rays. Previous studies have focused on understanding possible correlated effects over time distance due this radiation. In study' for the first time' we directly compare response of a transmon qubit measured initially at SQMS above-ground facility (Fermilab' Illinois' USA) then deep underground Gran Sasso Laboratory (INFN-LNGS' Italy). We observe same average lifetime roughly 80...
The dark matter interpretation of the DAMA/LIBRA annual modulation signal represents a long-standing open question in astroparticle physics. SABRE experiment aims to test such claim, bringing same detection technique an unprecedented sensitivity. Based on ultra-low background NaI(Tl) scintillating crystals like DAMA, features liquid scintillator Veto system, surrounding main target, and it will deploy twin detectors: one Northern hemisphere at Laboratori Nazionali del Gran Sasso (LNGS),...
Abstract The SABRE experiment aims to detect the annual modulation of dark matter interaction rate by means ultra-high purity NaI(Tl) crystals. It focuses on achievement a very low background carry out model-independent and high sensitivity test long-standing DAMA result. has recently completed Proof-of-Principle (PoP) phase at Gran Sasso National Laboratory, devoted assess radiopurity results 3.4-kg crystal scintillator grown within Collaboration operated underground in SABRE-PoP setup,...
Directional sensitivity to nuclear recoils could provide a smoking gun for possible discovery of dark matter in the form WIMPs. A hint directional dependence response dual-phase liquid argon Time Projection Chamber was found SCENE experiment. Given potential importance such capability frame work searches, new dedicated experiment, ReD (Recoil Directionality), designed framework DarkSide Collaboration, order scrutinize this hint. This contribution will describe performance detectors achieved...
The SABRE (Sodium-iodide with Active Background REjection) experiment is a new detector based on NaI(Tl) scintillating crystals for the dark matter detection through annual modula- tion. With ultra-pure and an active veto system, liquid scintillator surrounding crystal array, will reach unprecedented low background highest sensitivity among present experiments. Moreover be first search twin detectors located in North South hemispheres, Gran Sasso National Labora- tories (LNGS), Italy,...
Abstract SABRE is a dark matter direct detection experiment aiming to measure the annual modulation of interaction rate in NaI(Tl) crystals. focuses on achievement an ultra-low background operating high-purity crystals liquid scintillator veto for active rejection. Moreover, twin experiments will be located both Northern and Southern hemispheres (Italy Australia) disentangle any possible contribution from seasonal or site-related effects. In this article results first measurements with...
The design and first experimental results of a dual-wavelength heterodyne interferometer (DWHI) for precise surface profile measurements are presented. DWHI is based on Mach-Zehnder type with the to be measured in sensing arm interferometer. Two adjacent wavelengths simultaneously used interferometer; range information gained from beat frequency both signals. Thus, extreme ambiguity classical interferometers their sensitivity mechanical distortions reduced by ratio laser frequency. expected...