A5103115346- Adaptive optics and wavefront sensing
- Advanced optical system design
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Optical Systems and Laser Technology
- Optical Wireless Communication Technologies
- Neutrino Physics Research
- CCD and CMOS Imaging Sensors
- Astronomy and Astrophysical Research
- Particle Detector Development and Performance
- Infrared Target Detection Methodologies
- Calibration and Measurement Techniques
- Atmospheric Ozone and Climate
- Optical Coatings and Gratings
- Quantum, superfluid, helium dynamics
- Atmospheric aerosols and clouds
- Stellar, planetary, and galactic studies
- Photonic and Optical Devices
- Atomic and Subatomic Physics Research
- Solar and Space Plasma Dynamics
- Semiconductor Lasers and Optical Devices
- Solar Radiation and Photovoltaics
- Optical Coherence Tomography Applications
- Microwave Imaging and Scattering Analysis
- Quantum Information and Cryptography
Instituto Nacional de Técnica Aeroespacial
2023
Instituto de Astrofísica de Canarias
2010-2022
University of Oxford
2020
University of Tübingen
2018
Universidad de La Laguna
2018
High Energy Accelerator Research Organization
2016-2017
Universidad Politécnica de Madrid
2016
European Space Astronomy Centre
2016
Universidad de León
2016
Universitat de València
2016
We report the observation of two-neutrino double-beta decay in Xe-136 with T_1/2 = 2.11 +- 0.04 (stat.) 0.21 (sys.) x 10^21 yr. This second order process, predicted by Standard Model, has been observed for several nuclei but not Xe-136. The rate provides new input to matrix element calculations and search more interesting neutrino-less decay, most sensitive probe existence Majorana particles measurement neutrino mass scale.
FastCam is an instrument jointly developed by the Spanish Instituto de Astrofísica Canarias and Universidad Politécnica Cartagena designed to obtain high spatial resolution images in optical wavelength range from ground-based telescopes. The consists of a very low noise fast readout speed EMCCD camera capable reaching diffraction limit medium-sized telescopes 500 850 nm. incorporates FPGAs-based device save evaluate those minimally disturbed atmospheric turbulence real time. undisturbed...
Individual Ba ions are trapped in a gas-filled linear ion trap and observed with high signal-to-noise ratio by resonance fluorescence. Single-ion storage times of ∼5min (∼1min) achieved using He (Ar) as buffer gas at pressures the range 8×10−5–4×10−3torr. Trap dynamics gases experimentally studied simple case single ions. In particular, cooling effects light such Ar destabilizing properties heavier Xe studied. A model is offered to explain phenomenology.Received 15 February...
HARMONI is the adaptive optics assisted, near-infrared and visible light integral field spectrograph for Extremely Large Telescope (ELT). A first instrument, it provides work-horse spectroscopic capability ELT. As project approaches its Final Design Review milestone, design of instrument being finalized, plans assembly, integration testing are detailed. We present an overview instrument's capabilities from a user perspective, provide summary design, including operations calibrations, brief...
The EXO-200 experiment searched for neutrinoless double-beta decay of $^{136}$Xe with a single-phase liquid xenon detector. It used an active mass 110 kg 80.6%-enriched in ultra-low background time projection chamber ionization and scintillation detection readout. This paper describes the design performance various support systems necessary detector operation, including cryogenics, handling, controls. Novel features system were driven by need to protect thin-walled containing xenon, achieve...
The plenoptic wavefront sensor combines measurements at pupil and image planes in order to obtain wavefront information from different points of view simultaneously, being capable sample the volume above telescope to extract tomographic information atmospheric turbulence. After describing working principle, a laboratory setup has been used for verification capability measuring plane wavefront. A comparative discussion with respect other sensors is also included.
The aim of this work is to provide a methodology model the dielectric properties human tissues based on phantoms prepared with an aqueous solution, in semi-solid form, by using off-the-shelf components. Polyvinyl alcohol cryogel (PVA-C) has been employed as novel gelling agent fabrication for microwave applications wide frequency range, from 500 MHz 20 GHz. Agar-based and deionized water have also manufactured comparison purposes. Mathematical models dependent sucrose concentration are...
The CAFADIS camera is a new wavefront sensor (WFS) patented by the Universidad de La Laguna. system based on concept of plenoptic originally proposed Adelson and Wang [Single lens stereo with camera, IEEE Transactions Pattern Analysis Machine Intelligence 14 (1992)] its most salient feature ability to simultaneously measuring maps distances objects [Wavefront distance measurements using in Astronomical telescopes, Marseille (2008)]. This makes an interesting alternative for LGS-based AO...
Seeing measurements are crucial for the optimum design of (multi-conjugate) adaptive optics systems operating at solar telescopes. For study 4-meter European Solar Telescope, to be located in Canary Islands, several instruments have been constructed and operated, Observatorio del Roque de los Muchachos (La Palma) Teide (Tenerife), measure properties ground layer medium-high altitude turbulence. Several units short (42.34 cm) two long (323.06 scintillometer bars are, or be, installed both...
Since the beginning of development Gran Telescopio Canarias (GTC), an Adaptive Optics (AO) system was considered necessary to exploit full diffraction-limited potential telescope. The GTC AO designed during last years is based on a single deformable mirror conjugated telescope pupil, and Shack-Hartmann wavefront sensor with 20 x subapertures, using OCAM2 camera. GTCAO will provide corrected beam Strehl Ratio (SR) 0.65 in K-band bright natural guide stars. Most subsystems have been...
A Deformable Mirror Controller (DMC) has been devised to overcome the open-loop nature of Multi Object Adaptive Optics (MOAO), in particular for AO systems with update rates 1 ms or less. The system is based on a figure sensor, which uses monochromatic illumination source and Shack-Hartmann (SH) wavefront sensor (WFS) obtain fine sampling DM's 3D surface. sensor's beam optically separated from science path order not interfere observations. DMC incorporates real-time controller charge driving...
We present EDiFiSE, a prototype instrument for the observation of high-contrast systems, combining an adaptive optics (AO) system and equalized integral field unit (EIFU). The design AO takes into account statistical behaviour atmospheric turbulence structure at Canary Islands (Spain) astronomical observatories: Roque de los Muchachos (ORM) on island La Palma Teide observatory (OT) in Tenerife. will have capability adapting to prevailing conditions; this sense, EDiFiSE be 'adaptable' system....
FastCam project combines the features of lucky imaging technique for astronomical through Earth's atmosphere, with real-time processing capabilities re- configurable logic. An acquisition, and communication system based exclusively on reconfigurable hardware has been developed tested at laboratory telescopes. The proposed approach uses FPGAs their natural parallel arrangements to achieve a just one chip implementation whole system. Exceptional both technological results have obtained by...
EDIFISE is a technology demonstrator instrument developed at the Institute of Astrophysics Canary Islands (IAC), intended to explore feasibility combining Adaptive Optics with attenuated optical fibers in order obtain high spatial resolution spectra surroundings star, as an alternative coronagraphy. A simplified version only tip tilt correction has been tested OGS telescope Observatorio del Teide (Canary islands, Spain) and complete be WHT Roque de los Muchachos, Islands, Spain). This paper...
JEM-EUSO is a space observatory that will be attached to the Japanese module of International Space Station (ISS) observe UV photon tracks produced by Ultra High Energy Cosmic Rays (UHECR) interacting with atmospheric nuclei. The comprises an Atmospheric Monitoring System (AMS) gather data about status atmosphere, including infrared camera (IRCAM) for cloud coverage and top height detection. This paper describes design characterization tests IRCAM, which responsibility Spanish Consortium....
Most computers in the past have been equipped with floating point processing capabilities, allowing an easy and brute-force solution for machine computation errors, not requiring any specific tailoring of nearly hundred percent situations. However, needed adaptive optics real-time control 30-50 meter telescopes is big enough to cause trouble conventional von-Neumann processors, even if Moore's Law valid next years. Field Programmable Gate Array (FPGAs) proposed as a viable alternative cope...
The advent of Extremely Large Telescopes impose the existence wavefront correctors to achieve diffraction limited images. light collection area is more evidently affected by atmospheric turbulences and image distortion relevant than in smaller telescopes. AO system where mostly used improve performances while now turn be a real need. Though reconstructor mandatory for next generation telescopes, requirements imposed such large apertures are examined new challenges must faced.
The EUSO-Balloon, pathfinder for the JEM-EUSO Space Mission, was launched during night of August 25, 2014.The main aim flight to test all technologies developed EUSO (Extreme Universe Observatory) Mission under very severe operating conditions (Stratosphere at 40 km altitude), partly representative working in ISS.The IR camera onboard EUSO-Balloon is used obtain Cloud Top Height (CTH) and cloud coverage Field View (FoV) by using two Long Wave InfraRed (LWIR) bands centered 10.8 µm 12 µm.To...
The Japanese Experiment Module (JEM) Extreme Universe Space Observatory (EUSO) will be launched and attached to the module of International Station (ISS). Its aim is observe UV photon tracks produced by ultra-high energy cosmic rays developing in atmosphere producing extensive air showers. key element instrument a very wide-field, fast, large-lense telescope that can detect extreme particles with above 10<sup>19</sup> eV. Atmospheric Monitoring System (AMS), comprising, among others,...