H. Silva

ORCID: 0000-0003-2706-2386
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About
Contact & Profiles
Research Areas
  • Dark Matter and Cosmic Phenomena
  • Particle physics theoretical and experimental studies
  • Astrophysics and Cosmic Phenomena
  • Superconducting Materials and Applications
  • Particle Detector Development and Performance
  • Spacecraft and Cryogenic Technologies
  • Atomic and Subatomic Physics Research
  • Superconductivity in MgB2 and Alloys
  • Geothermal Energy Systems and Applications
  • Education during COVID-19 pandemic
  • Maternal and Neonatal Healthcare
  • Quantum, superfluid, helium dynamics
  • Cosmology and Gravitation Theories
  • Environmental Sustainability and Education

Universidade Federal do Tocantins
2021-2024

Universidade Federal do Norte do Tocantins
2024

European Organization for Nuclear Research
2013-2020

DTU Space
2016

Technical University of Denmark
2016

University of Bonn
2015

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...

10.1088/1475-7516/2019/06/047 article EN Journal of Cosmology and Astroparticle Physics 2019-06-24

The International AXion Observatory (IAXO) will incorporate a new generation detector for axions, hypothetical particle, which was postulated to solve one of the puzzles arising in standard model particle physics, namely strong CP problem. IAXO experiment is aiming at achieving sensitivity coupling between axions and photons order magnitude beyond limits current state-of-the-art detector, represented by CERN Axion Solar Telescope (CAST). relies on high-magnetic field distributed over very...

10.1109/tasc.2013.2251052 article EN IEEE Transactions on Applied Superconductivity 2013-03-29

IAXO, the new International AXion Observatory, will feature most ambitious detector for solar axions to date. Axions are hypothetical particles which were postulated solve one of puzzles arising in standard model particle physics, namely strong CP (Charge conjugation and Parity) problem. This aims at achieving a sensitivity coupling between photons order magnitude beyond limits current detector, CERN Axion Solar Telescope (CAST). The IAXO relies on high-magnetic field distributed over very...

10.1109/tasc.2013.2280654 article EN IEEE Transactions on Applied Superconductivity 2013-09-05

The International Axion Observatory (IAXO) is a proposed 4th-generation axion helioscope with the primary physics research goal to search for solar axions via their Primakoff conversion into photons of 1 – 10 keV energies in strong magnetic field. IAXO will achieve sensitivity axion-photon coupling gaγ down few ×10−12 GeV−1 wide range masses up ∼ 0.25 eV. This an improvement over currently best (3rd generation) helioscope, CERN Solar Telescope (CAST), about 5 orders magnitude signal...

10.1016/j.phpro.2014.12.031 article EN Physics Procedia 2015-01-01

As a part of the future circular collider conceptual design study for hadron-hadron physics (FCC-hh), designs detector magnets are being developed to facilitate measurement particle products resulting from 100-TeV collisions. This paper discusses evolution leading 65-GJ twin solenoid with forward dipoles present baseline that features three superconducting solenoids. The central magnet produces 4 T over free bore 10 m and length 20 m. solenoids provide additional bending power tracking...

10.1109/tasc.2017.2782708 article EN IEEE Transactions on Applied Superconductivity 2017-12-13

Este trabalho visou apresentar as problemáticas socioambientais enfrentadas por duas comunidades no entorno do Lontra e relatar ações projeto integrado de ensino extensão “Qualidade da água versus epidemiologia campo práticas saúde ambiental”, promovidos acadêmicos Universidade Federal Norte Tocantins. buscou através visitas domiciliares rodas conversa despertar os ribeirinhos para a relação entre riscos ambiente saúde, promover uma estratégia prática contextualizada com realidade local...

10.20873/saudeamb article PT Capim Dourado Diálogos em Extensão 2024-06-28

Abstract BabyIAXO, a 20 m-long twin-bore helioscope aiming for search of axion like particles, is currently in the engineering design phase and its construction to be completed within next 4 years. In addition X-ray detectors focusing optics, system equipped with 50 MJ magnet common coil layout, containing two 10 NbTi flat racetrack coils cooled by group cryocoolers. It has operate at kA, preferably persistent mode disconnected power supply, allowing simplify sun-tracking rotation BabyIAXO....

10.1088/1742-6596/1559/1/012127 article EN Journal of Physics Conference Series 2020-06-01

Abstract The Future Circular Collider (FCC) study includes the design of detector magnets for FCC-ee+ (electron-positron) collider, requiring a 2 T solenoid particle spectrometry, and FCC-hh (proton-proton) with 4 solenoid. For both solenoids their cryostats, CERN is developing an innovative challenging in which are positioned inside calorimeters, directly surrounding inner tracker. this purpose, cryostats must be optimized to have maximum radiation transparency. They structured as sandwich...

10.1088/1757-899x/756/1/012005 article EN IOP Conference Series Materials Science and Engineering 2020-03-01

For both versions of the Future Circular Collider, electron-positron FCC ee+, requiring a 2 T/4 m bore solenoid for particles spectrometry, and hadron-hadron hh, CERN is developing an innovative design detector solenoids, to enable their positioning inside calorimeters directly surrounding inner tracker. this happen, cryostat has be optimized achieve minimum radiation length. The novel consists sandwich thin outer metallic shells vacuum tightness, supported by insulating material with...

10.1088/1757-899x/502/1/012083 article EN IOP Conference Series Materials Science and Engineering 2019-04-15

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...

10.1109/nssmic.2018.8824640 preprint EN 2018-11-01

O objetivo deste estudo foi identificar a incidência da COVID-19 segundo positividade dos testes rápidos e os fatores associados na população do estado Pará. Trata-se de um transversal, analítico, retrospectivo, desenvolvido com casos em indivíduos notificados residentes no As informações foram coletadas Portal Transparência Estado. Considerou-se para doença como variável desfecho. Análise regressão logística utilizada associação entre as variáveis. A 46% (IC 95%: 45,7-46,2). Ser sexo...

10.17765/2176-9206.2021v14n2e9227 article PT cc-by-nc Saúde e Pesquisa 2021-04-30
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