C. Cogollos
A5035743606- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Superconducting and THz Device Technology
- Photocathodes and Microchannel Plates
- Physics of Superconductivity and Magnetism
- Astronomical Observations and Instrumentation
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Spectroscopy and Laser Applications
- Particle Accelerators and Free-Electron Lasers
- Neutrino Physics Research
- Metamaterials and Metasurfaces Applications
- Astronomy and Astrophysical Research
- Strong Light-Matter Interactions
- Cold Atom Physics and Bose-Einstein Condensates
Universitat de Barcelona
2018-2024
Universidad de Zaragoza
2018-2024
Max Planck Institute for Physics
2018-2023
Max Planck Society
2018
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 ....
We propose, design and construct a variant of the conventional axion haloscope concept that could be competitive in search for dark matter axions masses decade 10–100 μeV. Theses are located somewhat above mass range which existing experiments have reached sensitivity to benchmark QCD models. Our consists an array small microwave cavities connected by rectangular irises, arrangement commonly used radio-frequency filters. The size unit cavity determines main resonant frequency, while...
A bstract RADES (Relic Axion Detector Exploratory Setup) is a project with the goal of directly searching for axion dark matter above 30 μ eV scale employing custom-made microwave filters in magnetic dipole fields. Currently taking data at LHC CAST experiment. In long term, cavities are envisioned to take BabyIAXO magnet. this article we report on modelling, building and characterisation an optimised microwave-filter design alternating irises that exploits maximal coupling axions while being...
Abstract In the near future BabyIAXO will be most powerful axion helioscope, relying on a custom‐made magnet of two bores 70 cm diameter and 10 m long, with total available magnetic volume more than 7 3 . this document, it proposes describe implementation low‐frequency haloscope setups suitable for operation inside magnet. The RADES proposal has potential sensitivity to axion‐photon coupling down values corresponding KSVZ model, in (currently unexplored) mass range between 1 2 eV, after...
The axion is a hypothetical particle which candidate for cold dark matter. Haloscope experiments directly search these particles in strong magnetic fields with RF cavities as detectors. Relic Axion Detector Exploratory Setup (RADES) at CERN particular searching matter mass range above 30 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula> eV. figure of merit our detector depends...
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 the near future BabyIAXO will be most powerful axion helioscope, relying on a custom-made magnet of two bores 70 cm diameter and 10 m long, with total available magnetic volume more than 7 m$^3$. this document, we propose describe implementation low-frequency haloscope setups suitable for operation inside magnet. The RADES proposal has potential sensitivity to axion-photon coupling $g_{aγ}$ down values corresponding KSVZ model, in (currently unexplored) mass range between 1 2$~μ$eV, after...
Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. This is a highly sought-after capability in many classes detector, with broad applications across and astroparticle physics. However, at low energies, where signatures are small size, recoil only seems to be practical goal for micro-pattern gas detectors. white paper outlines physics case imaging, puts forward decadal plan advance towards directional low-energy recoils sensitivity...
We describe the results of a haloscope axion search performed with an 11.7 T dipole magnet at CERN. The used custom-made radio-frequency cavity coated high-temperature superconducting tape. A set 27 h data resonant frequency around 8.84 GHz was analysed. In range mass 36.5676 $\mu$eV to 36.5699 $\mu$eV, corresponding width 554 kHz, no signal excess hinting axion-like particle found. Correspondingly, in this range, limit on photon coupling-strength between g$_{a\gamma}\gtrsim$ 6.2e-13...
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...
More than 80 years after the postulation of dark matter, its nature remains one fundamental questions in cosmology. Axions are currently leading candidates for hypothetical, non-baryonic matter that is expected to account about 25% energy density Universe. Especially light Large Hadron Collider at CERN slowly closing on Weakly-Interacting Massive Particle (WIMP) searches, axions and axion-like particles (ALPs) provide a viable alternative approach solving problem. The fact makes them...
RADES (Relic Axion Detector Exploratory Setup) is a project with the goal of directly searching for axion dark matter above $30 μ$eV scale employing custom-made microwave filters in magnetic dipole fields. Currently taking data at LHC CAST experiment. In long term, cavities are envisioned to take (baby)-IAXO magnet. this article we report on modelling, building and characterisation an optimised microwave-filter design alternating irises that exploits maximal coupling axions while being...
The electromagnetic coupling axion-photon in a microwave cavity is revisited with the Boundary Integral - Resonant Mode Expansion (BI-RME) 3D technique. Such full-wave modal technique has been applied for rigorous analysis of excitation an axion field. In this scenario, field generated by can be assumed to driven equivalent electrical charge and current densities. These densities have inserted general BI-RME equations, which express RF existing within as integral involving Dyadic Green...