A. Gallas Torreira
A5053388594- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Superconducting Materials and Applications
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Stochastic processes and statistical mechanics
- Cosmology and Gravitation Theories
- Distributed and Parallel Computing Systems
- International Science and Diplomacy
- Advanced NMR Techniques and Applications
- Markov Chains and Monte Carlo Methods
- Radiation Therapy and Dosimetry
- Cold Atom Physics and Bose-Einstein Condensates
- Astrophysics and Cosmic Phenomena
- Radiation Effects in Electronics
- Respiratory Support and Mechanisms
Universidade de Santiago de Compostela
2016-2025
Instituto de Física Corpuscular
2023
Universitat de València
2023
Centro Brasileiro de Pesquisas Físicas
2013-2019
Universitat de Barcelona
2017
European Organization for Nuclear Research
2015
University of Oxford
2014
University of Bologna
2014
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
2008
Abstract Targeting a peak luminosity of 6 × 10 35 cm -2 s -1 , the Belle II experiment at SuperKEKB in Japan is considering an upgrade its interaction region. This involves vertex detector, which will be replaced by new fully pixelated detector (VTX). A monolithic CMOS pixel sensor named OBELIX (Optimized BELle pIXel) proposed to used VTX. Based on existing TJ-Monopix2 chip initially developed for ATLAS Inner Tracker (ITk) upgrade, designed 180 nm process with improved matrix and additional...
The LHCb VELO Upgrade I, currently being installed for the 2022 start of LHC Run 3, uses silicon microchannel coolers with internally circulating bi-phase \cotwo thermal control hybrid pixel modules operating in vacuum. This is largest scale application this technology to date. Production was completed July 2019 and assembly into cooling structures September 2021. paper describes R\&D path supporting production motivation design choices. have excellent peformance, low uniform mass, no...
In cancer patients undergoing proton therapy, a very intense secondary radiation is produced during the treatment, which lasts around one minute. About billion prompt gamma-rays are emitted per second, and their detection with fast scintillation detectors useful for monitoring correct beam delivery. To cope expected count rate pile-up, as well scarce statistics due to short treatment duration, we developed an eidetic data acquisition system capable of continuously digitizing detector signal...
Abstract The LHCb detector has undergone a major upgrade for LHC Run 3. This Upgrade I facilitates operation at higher luminosity and utilises full-detector information the collision rate, critically including use of vertex information. A new locator system, VELO Upgrade, been constructed. core element are double-sided pixelated hybrid silicon modules which operate in vacuum close to beam high radiation environment. construction quality assurance tests these described this paper. incorporate...
This article describes the high-speed system designed to meet challenging requirements for readout of new pixel VErtex LOcator (VELO) upgraded LHCb experiment. All elements electronics chain will be renewed cope with requirement ~40-MHz full-event rate. The sensors equipped VeloPix ASICs and placed at ~5 mm from Large Hadron Collider (LHC) beams in a secondary vacuum tank an extremely high nonhomogeneous radiation environment. front-end (FE) highest occupancy have pixel-hit rates above ~900...
The LHCb VELO Timepix3 telescope is a silicon pixel tracking system constructed initially to evaluate the performance of Upgrade prototypes. consists eight hybrid sensor planes equipped with ASIC . provide excellent charge measurement, timestamping and spatial resolution can function at high track rates. This paper describes construction its data acquisition offline reconstruction software. A timing 350 ps was obtained for reconstructed tracks. pointing better than 2\mum determined 180 GeV/c...
The new LHCb Vertex Locator (VELO) for LHCb, comprising a pixel detector and readout electronics, will be installed in 2021 data taking Run 3 at the LHC. electronics centers around "VeloPix" ASIC front-end operating trigger-less 40MHz. A custom serializer, called gigabit wireline transmitter (GWT), associated protocol have been designed VeloPix. GWT are sent from serializers of VeloPix line rate 5.12 Gb/s, reaching total 2–3 Tb/s full VELO detector. Data over 300-m optic-fiber links to...
The Large Hadron Collider beauty (LHCb) detector is designed to detect decays of b- and c- hadrons for the study CP violation rare decays. At end LHC Run 2, many LHCb measurements remained statistically dominated. In order increase trigger yield purely hadronic channels, hardware will be removed, read out at 40 MHz. This, in combination with five-fold luminosity, requires radical changes LHCb's electronics, and, some cases, replacement entire sub-detectors state-of-the-art technologies....
The LHCb detector has undergone a major upgrade for LHC Run 3. This Upgrade I facilitates operation at higher luminosity and utilises full-detector information the collision rate, critically including use of vertex information. A new locator system, VELO Upgrade, been constructed. core element are double-sided pixelated hybrid silicon modules which operate in vacuum close to beam high radiation environment. construction quality assurance tests these described this paper. incorporate 200 \mum...
The Belle II experiment at the SuperKEKB accelerator in Japan is dedicated to exploring physics beyond Standard Model by performing high-precision measurements of heavy-flavor processes. will undergo a major upgrade during second long shutdown achieve target luminosity 6$\times$10$^{35}$ cm$^{-2}$s$^{-1}$. vertex detector critical component II, responsible for precise tracking and vertexing near interaction point. current be upgraded fully pixelated (VTX) based on Monolithic Active Pixel...
The goal of this project is to examine the feasibility data transmission up ∼ 5 Gbit/s on a short ( 60 cm) low mass flex cable, for readout upgraded vertex detector (VELO) LHCb experiment. They will be in vacuum and very high radiation environment also partly particle acceptance. For full system 1600 links required. A set single-ended differential (edge-coupled) striplines, with variety line parameters have been prototyped using material specifically tailored type application (Dupont Pyralux...
A series of tests in CERN's North Area beam facility have been used to demonstrate the suitability Timepix chip, combined with a silicon sensor, as particle tracking device.Specifically interest is potential successor current chip be context an LHCb VELO upgrade.The 55µm square pixels, large active fraction and analogue information make very attractive for forward, high precision systems such VELO.In this contribution preliminary results are presented showing resolution achieved by assembly...
A high-quality, low-cost ventilator, dubbed HEV, has been developed by the particle physics community working together with biomedical engineers and physicians around world. The HEV design is suitable for use both in out of hospital intensive care units, provides a variety modes capable supporting spontaneous breathing supplying oxygen-enriched air. An external air supply can be combined unit situations where compressed not readily available. supports remote training post market surveillance...
Measuring the prompt gamma-rays generated as a by-product of irradiation in proton therapy treatments constitutes way for real-time range verification. A new measurement strategy based on single scintillation detector positioned coaxially to beam and behind irradiated area is being developed. Clinical conditions require detection system be able operate under count rates about 10 million per second. We report initial developments demonstrator consisting cerium bromide coupled photomultiplier...
Range verification during proton therapy via prompt gamma-rays is a technique that has reached clinical translation. Initial research studies on small number of patients were conducted the last years by three independent hospitals, using gamma-ray detectors behind heavy collimators, located perpendicular to beam axis. However, it remains unsure whether size and weight these prototypes will allow their applicability widespread scale. To address this pitfall, new method without collimation was...
The LHCb experiment at the LHC will upgrade its detector to take data luminosities of above 10 33 cm -2 s -1 from 2018 onwards.The fully upgraded use a new front-end electronics readout collision events 40MHz.A software based trigger be implemented and increase efficiencies, specially in hadronic decay channels.The silicon vertex baseline design pixel technology.The accumulate excess 50fb data, giving radiation doses 4 × 15 n eq edge silicon.This requires an efficient cooling system avoid...
HEV is a low-cost, versatile, high-quality ventilator, which has been designed in response to the COVID-19 pandemic. The ventilator intended be used both and out of hospital intensive care units, for invasive non-invasive ventilation. hardware can complemented with an external turbine use regions where compressed air supplies are not reliably available. standard modes provided include PC-A/C(Pressure Assist Control),PC-A/C-PRVC(Pressure Regulated Volume Control), PC-PSV (Pressure Support...