Gustavo Martínez
A5108059146- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Gamma-ray bursts and supernovae
- Radiation Detection and Scintillator Technologies
- Solar and Space Plasma Dynamics
- Radio Astronomy Observations and Technology
- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysical Phenomena and Observations
- Atmospheric Ozone and Climate
- Nuclear Physics and Applications
- Radiation Therapy and Dosimetry
- Adaptive optics and wavefront sensing
- Pulsars and Gravitational Waves Research
- Forensic and Genetic Research
- Lipoproteins and Cardiovascular Health
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Ionosphere and magnetosphere dynamics
- Nuclear physics research studies
- Photocathodes and Microchannel Plates
- Reproductive Health and Technologies
- Terahertz technology and applications
- Quantum Electrodynamics and Casimir Effect
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2015-2025
Universitat de Barcelona
2024
Universidad Complutense de Madrid
2021-2024
Institut d'Estudis Espacials de Catalunya
2024
Unidades Centrales Científico-Técnicas
2004-2024
Universitat Politècnica de Catalunya
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2023
Institute for High Energy Physics
2023
University of Geneva
2023
Centre National de la Recherche Scientifique
2023
Abstract We present an innovative charge detector with high resolution and wide dynamic range designed to fulfill the requirements of a monitoring system for energy ion beam. The prototype, constructed using Si photodiodes custom readout electronics, underwent extensive testing during HERD AMS beam tests at CERN SPS facilities. Initial showcased detector's exceptional performance, emphasizing both capable measuring nuclei atomic numbers ranging from 1 80. prototype's compatibility fast,...
The γ radiation and neutrons emitted following the β decays of 24O, 25–27F, 28−30Ne have been measured. nuclides were produced in quasifragmentation a 2.8 GeV 36S beam, separated in-flight identified through time-of-flight energy-loss measurements. ions stopped silicon detector telescope, which was used to detect particles their subsequent radioactive decay. coincident rays measured using four large volume germanium detectors mounted close implantation point detected 42 3He proportional...
The High Energy cosmic-Radiation Detection (HERD) is a future space experiment which will be installed on the China’s Space Station around 2027. main goal of measurement cosmic rays up to energies are not explored by instruments currently operating in space, particular protons with PeV, nuclei hundreds TeV per nucleon and electrons tens TeV. HERD consist silicon charge detectors, anti-coincidence scintillators, scintillating fiber trackers, transition radiation detector calorimeter. latter...
Abstract The measurement of cosmic-ray individual spectra provides unique information regarding the origin and propagation astro-particles. Due to limited acceptance current space experiments, protons nuclei around “knee” region (∼ 1 PeV) can only be observed by ground based experiments. Thanks an innovative design, High Energy cosmic-Radiation Detection (HERD) facility will allow direct observation up this energy region: instrument is mainly on a 3D segmented, isotropic homogeneous...
A new generation magnetic spectrometer in space will open the opportunity to investigate frontiers direct high-energy cosmic ray measurements and precisely measure amount of rare antimatter component rays beyond reach current missions. We propose concept for an Antimatter Large Acceptance Detector In Orbit (ALADInO), designed take over legacy performed by PAMELA AMS-02. ALADInO features technological solutions conceived overcome limitations spectrometers with a layout that provides...
The HERD experiment is a future for the direct detection of high-energy cosmic rays and to be installed on Chinese space station in 2027. main objectives are first measurement knee ray spectrum, extension electron+positron flux up tens TeV, gamma astronomy, search indirect signals dark matter. component detector an innovative calorimeter composed about 7500 LYSO scintillating crystals assembled spherical shape. Two independent readout systems scintillation light will each crystal:...
The High Energy cosmic-Radiation Detection (HERD) facility has been proposed as a space cosmic-ray and gamma-ray detector, which will be installed on the China Space Station around 2027. HERD able to measure proton nuclei fluxes up cosmic ray knee region (about 1 PeV), electron + positron flux tens of TeV gamma rays above 100 MeV. CALO, homogeneous 3D segmented calorimeter, is core detector HERD. It consists about 7500 LYSO cubes with 3 cm side length, corresponding 55 radiation lengths (X0)...
The latest generation of silicon photomultipliers (SiPM) offers twice as much sensitivity to Cherenkov light observed at ground level when compared photomultipliers. Their use for imaging atmospheric telescopes is increasing, from the FACT telescope, pioneer, small-sized Telescope Array (CTA) or LHAASO WFCTA camera. robustness SiPMs represents a unique opportunity ensure long-term operation with low maintenance. In this work, we present developments and performance SiPM camera aiming...
HERD is a future experiment for the direct detection of high energy cosmic rays. The instrument based on calorimeter optimized not only good resolution but also large acceptance. Each crystal composing equipped with two read-out systems: one wavelength-shifting fibers and other photodiodes different active areas assembled in monolithic package. In this paper, we describe photodiode system, focusing experimental requirements, design estimated performances. Finally, show how these features...
The Cherenkov Telescope Array (CTA) is the next generation ground-based very high energy gamma-ray observatory. Large-Sized (LST) of CTA targets 20 GeV -- 1 TeV gamma rays and has 1855 photomultiplier tubes (PMTs) installed in focal plane camera. With 23 m mirror dish, night sky background (NSB) rate amounts to several hundreds MHz per pixel. In order record clean images showers with minimal NSB contamination, a fast sampling signal waveform required so that integration time can be as short...
Abstract EDTA whole blood samples were collected from above 300 unrelated individuals of urban and countryside population Cordoba (Argentina) to study loci TH01, TPOX, CSF1PO, FESFPS, F13A01. The sample set for D16S530, FABP, D6S366 117, 192, 171 respectively. DNA was obtained by CTAB treatment, chloroform extraction, ethanol precipitation (1). Loci FESFPS F13A01, amplified using either homemade PCR or GenePrint STR Multiplex Systems CTT FFV (Promega Corporation, Madison WI). PCRs performed...
Objective:The most prevalent dyslipidemias in Mexico are low high-density lipoprotein (HDL) and high triglyceride (TG) levels. Hypertriglyceridemia (HTG) has been considered an independent risk factor for cardiovascular disease (CVD). The aim of this study was to evaluate the efficacy rosuvastatin (RSV) reducing TG levels Mexican patients.Methods:A randomized, double-blind, double-dummy, parallel-group, placebo-controlled, multicenter, phase IV conducted. Patients were both genders, ≥18...
Varicella-zoster virus causes varicella (chicken-pox), mainly in young children. Most cases are mild but serious complications can occur, resulting significant morbidity and mortality. The objective of this study was to estimate the cost burden hospitalizations two pediatric reference hospitals Mexico. This retrospective observational collected data on patients aged <18 years admitted third-level referral Cases were identified from hospital records using International Classification Diseases...
In recent years, the MAGIC telescopes have been equipped with a setup that allows its Imaging Atmospheric Cherenkov Telescopes (IACTs) to function as an Intensity Interferometer. The deadtime-free includes 4-channel GPU-based real-time correlator together optical filters in 350-450 nm wavelength range and specialized Active Mirror Control (AMC) configurations. This implementation perform measurements of spatial coherence (visibility) intensity fluctuations object’s starlight over several...
The measurement of cosmic rays at energies exceeding 100 TeV per nucleon is crucial for enhancing the understanding high-energy particle propagation and acceleration models in Galaxy. HERD a space-borne calorimetric experiment that aims to extend current direct measurements unexplored energies. payload scheduled be installed on Chinese Space Station 2027. primary peculiarity instrument its capability measure particles coming from all directions, with main detector being deep, homogeneous, 3D...
The High Energy cosmic-Radiation Detection (HERD) facility is a next generation spaceborne detector to be installed onboard the Chinese Space Station for about 10 years. HERD will address major problems in fundamental physics and astrophysics, providing precise measurements of charged-cosmic rays up PeV energies, performing indirect searches dark matter electron spectrum few tens TeV monitoring gamma-ray skymap surveys transient searches. composed 3D imaging calorimeter (CALO) surrounded by...
La presente investigación tuvo el objetivo de evaluar la relación variables salutogénicas (resiliencia y esperanza), patogénicas (ansiedad depresión), calidad vida relacionada con salud e imagen corporal en 50 mujeres edades comprendidas entre 24 70 años, diagnosticadas cáncer mama, atendidas Instituto Médico Alta Tecnología, Montería, Colombia. Se utilizó una batería compuesta por un cuestionario datos sociodemográficos, las escalas Imagen Corporal, Ansiedad Depresión Hospitalaria...
The two MAGIC 17-m diameter Imaging Atmospheric Cherenkov Telescopes have been equipped to work also as an intensity interferometer with a deadtime-free, 4-channel, GPU-based, real-time correlator. Operating baselines between ∼40 and 90 m the is able measure stellar diameters of 0.5 - 1 mas in 400-440 nm wavelength range sensitivity roughly 10 times better than that achieved 1970's by Narrabri Stellar Intensity Interferometer. Besides, active mirror control allows split primary mirrors into...