H. Mirallas
A5044304332- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Radiation Detection and Scintillator Technologies
- Neutrino Physics Research
- Photocathodes and Microchannel Plates
- Plasma Diagnostics and Applications
- Magnetic Field Sensors Techniques
- Cosmology and Gravitation Theories
- Semiconductor Lasers and Optical Devices
- Radioactive Decay and Measurement Techniques
- IoT Networks and Protocols
- Spectroscopy and Laser Applications
- Radioactivity and Radon Measurements
- Advanced MEMS and NEMS Technologies
Universidad de Zaragoza
2015-2024
Canfranc Underground Laboratory
2013-2022
Central China Normal University
2019
Shanghai Jiao Tong University
2018
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2016
Istituto Nazionale di Fisica Nucleare
2016
We review the physics potential of a next generation search for solar axions: International Axion Observatory (IAXO) . Endowed with sensitivity to discover axion-like particles (ALPs) coupling photons as small gaγ∼ 10−12 GeV−1, or electrons gae∼10−13, IAXO has find QCD axion in 1 meV∼1 eV mass range where it solves strong CP problem, can account cold dark matter Universe and be responsible anomalous cooling observed number stellar systems. At same time, will have enough detect lower axions...
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....
A bstract We present results of the Relic Axion Dark-Matter Exploratory Setup (RADES), a detector which is part CERN Solar Telescope (CAST), searching for axion dark matter in 34.67 μ eV mass range. radio frequency cavity consisting 5 sub-cavities coupled by inductive irises took physics data inside CAST dipole magnet first time using this filter-like haloscope geometry. An exclusion limit with 95% credibility level on axion-photon coupling constant g aγ ≳ 4 × 10 − 13 GeV 1 over range 34 ....
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...
We report on the design, construction and operation of a low background x-ray detection line composed shielded Micromegas detector microbulk technology. The is made from radiopure materials placed at focal point ∼ 5 cm diameter, 1.5 m focal-length, cone-approximation Wolter I telescope (XRT) assembled thermally-formed (or "slumped") glass substrates deposited with multilayer coatings. system has been conceived as technological pathfinder for future International Axion Observatory (IAXO), it...
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...
TREX-DM is conceived to look for low-mass Weakly Interacting Massive Particles (WIMPs) using a gas Time Projection Chamber equipped with micromegas readout planes at the Canfranc Underground Laboratory. The detector can hold in active volume 20 l of pressurized up 10 bar, corresponding 0.30 kg Ar or 0.16 Ne. are read self-triggered acquisition, allowing thresholds below 0.4 keV (electron equivalent). A low background level lowest energy region another essential requirement. To assess...
As part of the T-REX project, a number R&D and prototyping activities have been carried out during last years to explore applicability gaseous Time Projection Chambers (TPCs) with Micromesh Gas Structures (Micromegas) in rare event searches like double beta decay, axion research low-mass WIMP searches. While companion paper we focus on this results regarding search for dark matter candidates, both axions WIMPs. Small (few cm wide) ultra-low background Micromegas detectors are used image...
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...
Micromegas detectors are an optimum technological choice for the detection of low energy x-rays. The background techniques applied to these yielded remarkable reductions over years, being CAST experiment beneficiary developments. In this document we report on latest upgrades towards further and better understanding detectors' response. encompass readout electronics, a new detector design implementation more efficient cosmic muon veto system. Background levels below 10−6keV-1cm-2s-1 have been...
As part of the T-REX project, a number R&D and prototyping activities have been carried out during last years to explore applicability gaseous Time Projection Chambers (TPCs) with Micromesh Gas Structures (Micromegas) in rare event searches like double beta decay, axion research low-mass WIMP searches. In both this its companion paper, we compile main results project give an outlook application prospects for detection technique. While paper focus on axions WIMPs, regarding measurement decay...
Micromesh gas amplification structures (Micromegas) can be used as readout of Time Projection Chambers in the field Rare Event searches dealing with dark matter, double beta decay or solar axions. The topological information events offered by these gaseous detectors is a very powerful tool for signal identification and background rejection. However, this kind experiments radiopurity detector components surrounding materials must thoroughly controlled addition order to keep experimental low...
The PandaX-III experiment plans to search for neutrinoless double beta decay (0$νββ$) of $^{136}$Xe in the China JinPing underground Laboratory (CJPL). will use a high pressure gaseous Time Projection Chamber (TPC) register both energy and electron track topology an event. This article is devoted software side experiment. As tool we REST, framework developed reconstruction simulation TPC-based detector systems. We study potential background reduction by introducing appropiate parameters...
Searching for the Neutrinoless Double Beta Decay (NLDBD) is now regarded as topmost promising technique to explore nature of neutrinos after discovery neutrino masses in oscillation experiments. PandaX-III (Particle And Astrophysical Xenon Experiment III) will search NLDBD $^{136}$Xe at China Jin Ping underground Laboratory (CJPL). In first phase experiment, a high pressure gas Time Projection Chamber (TPC) contain 200 kg, 90% enriched operated 10 bar. Fine pitch micro-pattern detector...
We report the design, construction, and initial commissioning results of a large high pressure gaseous Time Projection Chamber (TPC) with Micromegas modules for charge readout. The detector vessel has an inner volume about 600 L active 270 L. At 10 bar operating pressure, contains 20 kg xenon gas can image charged particle tracks. Drift electrons are collected by readout plane, which accommodates tessellation seven modules. Each covers square cm cm. A new type Microbulk is chosen this...
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...
We model the response of a state art micro-hole single-stage charge amplication device (`microbulk' Micromegas) in gaseous atmosphere consisting Xenon/trimethylamine at various concentrations and pressures. The amplifying structure, made with photo-lithographic techniques similar to those followed fabrication gas electron multipliers (GEMs), consisted 100 um-side equilateral-triangle pattern 50 um-diameter holes placed its vertexes. Once primary electrons are guided into by virtue an...