arXiv subjects

Donato Orlandi

Publications and source records attributed to Donato Orlandi.

3 recordsLinked to original sources

arXiv2026

High-Pressure Reinforced Vessel, produced by Additive Manufacturing, to be used as a gas target for the measurement program at n_TOF -- Multiple Argon Experiments (MArEX)

The n_TOF collaboration has expressed interest in developing transmission experiments with liquid argon (LAr) and gaseous argon (GAr) to improve the understanding of neutron propagation and capture in Ar. This topic is relevant to both nuclear and particle physics, as LAr is widely used in neutrino experiments, dark matter searches and other applications. Despite its widespread use, neutron interactions on Ar are still poorly characterized. In this context, the Multiple Argon Experiments (MArEX) initiative aims to address these gaps by providing detailed measurements of neutron and Ar interactions, including resolved resonance parameters and radiative capture widths, across an unprecedented energy range from 1 eV to 200 MeV. As part of MArEX research activities, this paper presents the development of an innovative High-Pressure Reinforced Vessel (HPRV) for GAr targets, produced by Additive Manufacturing (AM) and reinforced with carbon fibre (CF). The experimental results confirmed the capability of the vessel to withstand high operating pressure without any issues and the capability of the Multi-layers Finite Element Model (MLs-FEM) to simulate and predict the stress behaviour and the operation limit of the vessel.

physics.ins-det↗

arXiv2025

GEMINI: The First Underground Testbed for Seismic Isolation and Interplatform Control in Next-Generation Gravitational-Wave Detectors

GEMINI is an underground research and development facility dedicated to advancing seismic isolation and control technologies for future gravitational-wave observatories, including the Einstein Telescope (ET) and the Lunar Gravitational-Wave Antenna (LGWA). This paper presents the technical design and theoretical framework of GEMINI's active seismic isolation platforms, including detailed noise budget analyses, performance predictions, and residual platform motion evaluations. The GEMINI platforms are designed to achieve unprecedented vibration isolation, targeting motion suppression across the 10 mHz to 10 Hz frequency band, and with the goal to make them the quietest platforms of their kind. In the context of ET, GEMINI will enable the development and validation of inter-platform control strategies essential for the stabilization of auxiliary degrees of freedom of its interferometers. GEMINI will also support the testing of cryogenic payloads and ultra-sensitive inertial sensors required for LGWA. By integrating advanced cryogenic systems, precision inertial sensors, and state-of-the-art vibration isolation technologies, GEMINI will serve as a versatile testbed for next-generation ground-based gravitational-wave detectors and lunar seismometry missions.

physics.ins-det↗

arXiv2022

The ASTAROTH project

The most discussed topic in direct search for dark matter is arguably the verification of the DAMA claim. In fact, the observed annual modulation of the signal rate in an array of NaI(Tl) detectors can be interpreted as the awaited signature of dark matter interaction. Several experimental groups are currently engaged in the attempt to verify such a game-changing claim with the same target material. However, all present-day designs are based on a light readout via Photomultiplier Tubes, whose high noise makes it challenging to achieve a low background in the 1-6 keV energy region of the signal. Even harder it would be to break below 1 keV energy threshold, where a large fraction of the signal potentially awaits to be uncovered. ASTAROTH is an R\&D project to overcome these limitations by using Silicon Photomultipliers (SiPM) matrices to collect scintillation light from NaI(Tl). The all-active design based on cubic crystals is operating in the 87-150 K temperature range where SiPM noise can be even a hundred times lower with respect to PMTs. The cryostat was developed following an innovative design and is based on a copper chamber immersed in a liquid argon bath that can be instrumented as a veto detector. We have characterized separately the crystal and the SiPM response at low temperature and we have proceeded to the first operation of a NaI(Tl) crystal read by SiPM in cryogeny.

physics.ins-det↗