David Díez Ibáñez
A5009374795- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Spectroscopy and Laser Applications
- Cosmology and Gravitation Theories
Universidad de Zaragoza
2022-2025
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...
<ns4:p>Background We develop the concept of a Micromegas readout plane with an additional GEM preamplification stage placed few millimetres above it to increase maximum effective gain combined readout. Methods implement and test in realistic conditions for its application low-background dark matter searches like TREX-DM experiment. For this, we use microbulk type, built radiopure materials. Results report on extra factors about 90, 50 20 1, 4 10 bar...
We develop the concept of a Micromegas readout plane with an additional GEM preamplification stage placed few millimetres above it to increase maximum effective gain combined readout. implement and test in realistic conditions for its application low-background dark matter searches like TREX-DM experiment. For this, we use Microbulk type, built radiopure materials. report on extra factors about 90, 50 20 1, 4 10 bar Ar-1%iC 4H 10. These results are obtained small chamber allowing systematic...
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...
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...