A5031714015- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Mass Spectrometry Techniques and Applications
- Spectroscopy and Laser Applications
- CCD and CMOS Imaging Sensors
- Nuclear Physics and Applications
- Plasma Diagnostics and Applications
- Analytical Chemistry and Sensors
- Medical Imaging Techniques and Applications
- Atmospheric Ozone and Climate
- Particle physics theoretical and experimental studies
- Electrical and Bioimpedance Tomography
- Astrophysics and Cosmic Phenomena
- Atomic and Molecular Physics
- Lanthanide and Transition Metal Complexes
- Body Composition Measurement Techniques
- Neutrino Physics Research
- Plant and Biological Electrophysiology Studies
- Gas Sensing Nanomaterials and Sensors
- Magnetic and Electromagnetic Effects
- Protein Interaction Studies and Fluorescence Analysis
- Engineering Technology and Methodologies
- Advanced X-ray Imaging Techniques
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2020-2024
Istituto Nazionale di Fisica Nucleare
2020-2024
Nicolaus Copernicus Astronomical Center
2024
Polish Academy of Sciences
2024
European Organization for Nuclear Research
2024
University of Aveiro
2024
Gran Sasso Science Institute
2020-2024
Czech Technical University in Prague
2022-2023
University of Coimbra
2013-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2022
The search for a novel technology able to detect and reconstruct nuclear electron recoil events with the energy of few keV has become more important now that large regions high-mass dark matter (DM) candidates have been excluded. Moreover, detector sensitive incoming particle direction will be crucial in case DM discovery open possibility studying its properties. Gaseous time projection chambers (TPC) optical readout are very promising detectors combining detailed event information provided...
The idea of implementing electroluminescence-based amplification through transparent multi-hole structures (FAT-GEMs) has been entertained for some time. Arguably, such a technology to be attractive it should perform at least level comparable conventional alternatives based on wires or meshes. We present now detailed calorimetric study carried out 5.9 keV X-rays in xenon, pressures ranging from 2 10 bar, resorting different geometries, production and post-processing techniques. At reference...
The CYGNO project has the goal to use a gaseous TPC with optical readout detect dark matter and solar neutrinos low energy threshold directionality. demonstrator will consist of 1 m 3 volume filled He:CF 4 gas mixture at atmospheric pressure. Optical high granularity CMOS sensors, combined fast light detectors, provide detailed reconstruction event topology. This allow discriminate nuclear recoil signal from background, mainly represented by electron recoils induced radioactivity. Thanks...
The search for a novel technology able to detect and reconstruct nuclear recoil events in the keV energy range has become more important as long vast regions of high mass WIMP-like Dark Matter candidate have been excluded. Gaseous Time Projection Chambers (TPC) with optical readout are very promising combining complete event information provided by TPC technique sensitivity granularity last generation scientific light sensors. A an amplification at anode obtained Gas Electron Multipliers...
Avalanches in gas-based detectors operating at atmospheric pressure and using Ar−CO2 or Ne−CO2 as drift medium produce a first instance mainly Ar+, Ne+ CO2+ ions. The noble gas ions transfer their charge to CO2 few ns. A ns later, the have picked up molecules, forming cluster ions, particular CO2+(CO2)n. Since are slower than initial signals induced by ion motion altered. effect is shown be present constant-field TPC readout chambers, expected affect devices such Micromegas tubes.
In this paper we present the experimental results for mobility of ions in argon-ethane gaseous mixtures (Ar-C2H6) pressures ranging from 6 to 10 Torr and reduced electric fields Td 25 range, at room temperature. For Ar concentrations below 80% two peaks were observed time arrival spectra which attributed ion species with 3-carbons (C3H7+, C3H8+ C3H9+) 4-carbons (which includes C4H7+, C4H9+, C4H10+ C4H12+ ions). above a third peak appears, may belong C5H11+. The 80%, 85%, 90% 95% are...
In this paper we present the experimental results for mobility of ions in argon-carbon dioxide gaseous mixtures (Ar-CO2) pressures ranging from 6 to 10 Torr and reduced electric fields Td 25 range, at room temperature.The time-of-arrival spectra several mixture ratios studied revealed that relative abundance their mobilities depend on ratio. For Ar concentrations below 80% only one peak was observed which attributed CO2+, while above a second appears left side main peak, may be due...
The performance and long term stability of an optically readout Time Projection Chamber with electron amplification structure based on three Gas Electron Multipliers was studied. He/CF4 gas mixtures were used in two different proportions (60/40 70/30) a CYGNO prototype 7 litres sensitive volume. With electrical configurations providing very similar gains, almost full detection efficiency the whole detector volume found both mixtures, while light yield about 20% larger for 60/40 found....
Abstract In the present work, we describe a new cryogenic setup for studies of wavelength-shifting materials optimised light collection in noble element radiation detectors, and discuss commissioning results. This SiPM-based uses α induced scintillation gaseous argon as vacuum ultraviolet source with goal characterising materials, such polyethylene naphthalate (PEN) tetraphenyl butadiene (TPB), terms their efficiency. Preliminary results obtained system are consistent ones reported...
In this paper we present the results of ion mobility measurements made in gaseous mixtures argon (Ar) and methane (CH4) for pressures ranging from 5 to 8 Torr low reduced electric fields (in 17 Td 43 range), at room temperature. The time arrival spectra several mixture ratios studied revealed that relative abundance ions formed depend on ratios. For CH4 concentrations 2.5–10% range three well defined peaks were observed which attributed single-carbon (CH5+), 2-carbon (C2H4+ C2H5+), 3-carbon...
In this paper we present the experimental results for mobility, K0, of ions in neon-carbon dioxide (Ne-CO2) and carbon dioxide-nitrogen (CO2-N2) gaseous mixtures total pressures ranging from 8–12 Torr, reduced electric fields 10–25 Td range, at room temperature. Regarding Ne-CO2 mixture only one peak was observed CO2 concentrations above 25%, which has been identified as an ion originated CO2, while below 25% a second-small appears left side main peak, attributed to impurities. The mobility...
A recent experimental technique was used for measuring the mobility of positive ions originated from ethane in their parent gas. In this particular experiment, measurements were made pure (C2H6) pressures ranging 6 to 10 Torr and reduced electric fields varying 42 Td. The time arrival spectra revealed two peaks mobilities determined. Extrapolation zero field led values 1.58 cm2V−1s−1 1.47 cm2V−1s−1, which are likely belong a 3-carbon group includes C3H5+, C3H7+, C3H8+ C3H9+and 4-carbon C4H9+...
In this paper we present the results for ion mobility measurements made in gaseous mixtures of xenon (Xe) and nitrogen (N2) low reduced electric fields (in 15 Td to 30 range), at room temperature. The choice was guided by typical detector's demands. 0–100% range Xe concentrations mixture, only one peak observed which attributed Xe2+; fact its found follow Blanc's law. A time-of-arrival spectrum 90% 10% N2 is shown. mobilities, obtained from peaks, are calculated presented paper.
Optical readout of Gas Electron Multipliers (GEM) provides very interesting performances and has been proposed for different applications in particle physics. In particular, thanks to its good efficiency the keV energy range, it is being developed low-energy rare event studies, such as Dark Matter search. So far, optical approach exploits light produced during avalanche processes GEM channels. Further luminescence gas can be induced by electrons accelerated a suitable electric field. The...
Time Projection Chambers (TPCs) working in combination with Gas Electron Multipliers (GEMs) produce a very sensitive detector capable of observing low energy events. This is achieved by capturing photons generated during the GEM electron multiplication process means high-resolution camera. The CYGNO experiment has recently developed TPC Triple coupled to noise and high spatial resolution CMOS sensor. For image analysis, an algorithm based on adapted version well-known DBSCAN was implemented,...
Data on ion mobility is important to improve the performance of large volume gaseous detectors, such as ALICE TPC or in NEXT experiment. In present work method, experimental setup and results for measurements Ne-N2 mixtures are presented. The this mixture show presence two peaks different gas ratios Ne-N2, low reduced electric fields, E/N, 10–20 Td (2.4–4.8 kV·cm−1·bar−1), pressures 6–8 Torr (8–10.6 mbar) at room temperature.
In this paper we present experimental results for ion reduced mobilities (K0) in gaseous trimethylamine, TMA—(CH3)3N, and xenon-TMA mixtures electric fields E/N between 7.5 60 Td the pressure range from 0.5 to 10 Torr, at room temperature. Both pure TMA only one peak was observed time of arrival spectra, which is believed be due two ions with similar mass, (CH3)3N+ (59 u) (CH3)2CH2N+ (58 u), whose mobility indistinguishable our system. The possibility cluster formation also discussed. TMA,...
In this paper we present the results of ion mobility measurements made in pure carbon tetrafluoride (CF4) and gaseous mixtures argon with (Ar-CF4) for pressures ranging from 6 to 10 Torr (8–10.6 mbar) low reduced electric fields Td 25 range (2.4-6.1 kV⋅cm−1⋅bar−1), at room temperature. The time arrival spectra revealed only one peak throughout entire studied which was attributed CF3+. However, Ar concentrations above 70%, a bump starts appear left side main higher than 15 Td, impurities....
Data on ion mobility is important to improve the performance of large volume gaseous detectors. In present work method, experimental setup and results for measurements in Xe-CO2 mixtures are presented. The this mixture show presence only one peak all gas ratios Xe-CO2, low reduced electric fields, E/N, 10-25 Td (2.4-6.1 kV·cm−1·bar−1), pressures 6-8 Torr (8-10.6 mbar), at room temperature.