A5062496453- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Photocathodes and Microchannel Plates
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Magnetic Field Sensors Techniques
- Neutrino Physics Research
- Plasma Diagnostics and Applications
- Cosmology and Gravitation Theories
- Spectroscopy and Laser Applications
- IoT Networks and Protocols
Universidad de Zaragoza
2020-2024
A bstract This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in Sun, with unprecedented sensitivity. BabyIAXO conceived test all subsystems (magnet, optics detectors) relevant scale final system thus serve as prototype IAXO, but same time fully-fledged physics reach itself, potential discovery....
The CAST-CAPP axion haloscope, operating at CERN inside the CAST dipole magnet, has searched for axions in 19.74 $\mu$eV to 22.47 mass range. detection concept follows Sikivie haloscope principle, where Dark Matter convert into photons within a resonator immersed magnetic field. is an array of four individual rectangular cavities inserted strong phase-matched maximize sensitivity. Here we report on data acquired 4124 h from 2019 2021. Each cavity equipped with fast frequency tuning mechanism...
The REST-for-Physics (Rare Event Searches Toolkit for Physics) framework is a ROOT-based solution providing the means to process and analyze experimental or Monte Carlo event data. Special care has been taken on traceability of code validation results produced within framework, together with connectivity between data stored registered through specific version metadata members. development was originally motivated cover needs at Rare experiments (experiments looking phenomena having extremely...
Hypothetical axions provide a compelling explanation for dark matter and could be emitted from the hot solar interior. The CERN Axion Solar Telescope has been searching via their back conversion to x-ray photons in 9-T 10-m long magnet directed toward Sun. We report on an extended run with International Observatory pathfinder detector, doubling previous exposure time. detector was operated xenon-based gas mixture part of new run, providing technical insights future configurations. No counts...
Gas time projection chambers (TPCs) with Micromegas pixelated readouts are being used in dark matter searches and other rare event searches, due to their potential terms of low background levels, energy spatial resolution, gain, operational stability. Moreover, these detectors can provide precious features,such as topological information, allowing for directionality powerful signal-background discrimination. The technology the microbulk type is particularly suited low-background applications...
This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in Sun, with unprecedented sensitivity. BabyIAXO conceived test all subsystems (magnet, optics detectors) relevant scale final system thus serve as prototype IAXO, but same time fully-fledged physics reach itself, potential discovery. The...
In this paper we present measurements performed with a Micromegas X-ray detector setup. The is prototype in the context of BabyIAXO helioscope, which under construction to search for an emission hypothetical axion particle from Sun. An important component such helioscope low background high efficiency 1–10 keV energy range. goal measurement was study techniques discrimination. addition common used multi-layer veto system designed tag cosmic-ray induced neutron background. Over effective time...
Rare event searches require extreme radiopurity in all detector components. This includes the active medium, which case of gaseous detectors, is operating gas. The gases used typically include noble gas mixtures with molecular quenchers. Purification these required to achieve desired performance, however, purifiers are known emanate 222 Rn, a potential source background. Several studied for their O 2 and H purification efficiency Rn emanation rates, aiming identify lowest-Rn options....
BabyIAXO is a helioscope under construction to search for an emission of the axion particle from Sun. At same time it serves as intermediate stage towards International Axion Observatory (IAXO). An integral component this experiment low background X-ray detector with high efficiency in 1–10 keV energy range. Micromegas detectors are considered baseline technology thanks relatively and very level. Other technologies developed reach better resolution while maintaining level also study. In...
Abstract The International AXion Observatory (IAXO) is a large scale axion helioscope that will look for axions and axion-like particles produced in the Sun with unprecedented sensitivity. BabyIAXO an intermediate experimental stage be hosted at DESY (Germany) test all IAXO subsystems serving as prototype but same time fully-fledged potential discovery. One of crucial components project ultra-low background X-ray detectors image photons by conversion experiment. baseline detection technology...
Abstract The TREX-DM detector, a low background chamber with microbulk Micromegas readout, was commissioned in the Canfranc Underground Laboratory (LSC) 2018. Since then, data taking campaigns have been carried out argon and neon mixtures, at different pressures from 1 to 4 bar. By achieving energy threshold of keV ee level 80 counts -1 kg day region 7 , experiment demonstrates its potential search for low-mass WIMPs. Two most important challenges currently faced are reduction both,...
Background: we develop the concept of a Micromegas (MICRO-MEsh GAseous Structure) readout plane with an additional GEM (Gas Electron Multiplier) preamplification stage placed few mm above it, to increase maximum effective gain combined readout. We implement it and test in realistic conditions for its application low-background dark matter searches like TREX-DM experiment. Methods: this, use microbulk type, built radiopure materials. A small chamber allowing systematic scanning voltages...
Axions are a natural consequence of the Peccei-Quinn mechanism, most compelling solution to strong-CP problem. Similar axion-like particles (ALPs) also appear in number possible extensions Standard Model, notably string theories. Both axions and ALPs very well motivated candidates for Dark Matter, addition, they would be copiously produced at sun’s core. A relevant effort during last decade has been CAST experiment CERN, sensitive axion helioscope to-date. The International Axion Observatory...
It has been previously advocated that the presence of daily and annual modulations axion flux on Earth's surface may dramatically change strategy searches. The arguments were based so-called Axion Quark Nugget (AQN) dark matter model which was originally put forward to explain similarity visible cosmological densities $\Omega_{\rm dark}\sim \Omega_{\rm visible}$. In this framework, population galactic axions with mass $ 10^{-6} {\rm eV}\lesssim m_a\lesssim 10^{-3}{\rm eV}$ velocity $\langle...
Surface contamination of $^{222}$Rn progeny from the $^{238}$U natural decay chain is one most difficult background contributions to measure in rare event searches experiments. In this work we propose AlphaCAMM, a gaseous chamber read with segmented Micromegas, for direct measurement $^{210}$Pb surface flat samples. The detection concept exploits readout capabilities Micromegas detectors reconstruction $^{210}$Po alpha tracks increase signal-to-background ratio. We report here on design and...
The International AXion Observatory (IAXO) is a large scale axion helioscope that will look for axions and axion-like particles produced in the Sun with unprecedented sensitivity. BabyIAXO an intermediate experimental stage be hosted at DESY (Germany) test all IAXO subsystems serving as prototype but same time fully-fledged potential discovery. One of crucial components project ultra-low background X-ray detectors image photons by conversion experiment. baseline detection technology this...
The TREX-DM detector, a low background chamber with microbulk Micromegas readout, was commissioned in the underground laboratory of Canfranc (LSC) 2018. Since then, data taking campaigns have been carried out Argon and Neon mixtures, at different pressures from 1 to 4 bar. By achieving energy threshold keV$_{ee}$ level 80 counts keV$^{-1}$ Kg$^{-1}$ day$^{-1}$ region 7 keV$_{ee}$, experiment demonstrates its potential search for low-mass WIMPs. Two most important challenges currently faced...
Surface contamination of $^{222}$Rn progeny from the $^{238}$U natural decay chain is one most difficult background contributions to measure in rare event searches experiments. In this work we propose AlphaCAMM, a gaseous chamber read with segmented Micromegas, for direct measurement $^{210}$Pb surface flat samples. The detection concept exploits readout capabilities Micromegas detectors reconstruction $^{210}$Po alpha tracks increase signal-to-background ratio. We report here on design and...