P. Vázquez Regueiro
A5100729400- 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
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Nuclear physics research studies
- Stochastic processes and statistical mechanics
- Distributed and Parallel Computing Systems
- International Science and Diplomacy
- Cosmology and Gravitation Theories
- Radiation Therapy and Dosimetry
- CCD and CMOS Imaging Sensors
- Particle accelerators and beam dynamics
- Radiation Effects in Electronics
- Advanced NMR Techniques and Applications
- Markov Chains and Monte Carlo Methods
- Cold Atom Physics and Bose-Einstein Condensates
Universidade de Santiago de Compostela
2016-2025
Universidad de Alcalá
2023-2025
Universitat Ramon Llull
2024
Instituto de Física Corpuscular
2023
Universitat de València
2023
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2023
University College Dublin
2019-2022
European Organization for Nuclear Research
2010-2021
Central China Normal University
2014-2020
State Key Laboratory of Nuclear Physics and Technology
2020
The goal of the DIRAC experiment at CERN (PS212) is to measure $\pi^+\pi^-$ atom lifetime with 10% precision. Such a measurement would yield precision 5% on value $S$-wave $\pi\pi$ scattering lengths combination $|a_0-a_2|$. Based part collected data we present first result lifetime, $\tau=[2.91 ^{+0.49}_{-0.62}]\times 10^{-15}$ s, and discuss major systematic errors. This corresponds $|a_0-a_2|=0.264 ^{+0.033}_{-0.020} m_{\pi}^{-1}$.
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...
The goal of the DIRAC experiment at CERN is to measure with high precision lifetime π + -atom (A 2π ), which order 3×10 -15 s, and thus determine s-wave ππ-scattering lengths difference |a 0 -a 2 |.A atoms are detected through characteristic features -pairs from atom break-up (ionization) in target.We report on a first statistics atomic data sample obtained p Ni interactions 24 GeV/c proton momentum present methods separate signal background.
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 electron amplification and transport within a photomultiplier tube (PMT) has been investigated by developing an in-house Monte Carlo simulation code. secondary emission in the dynodes is implemented via effective model Modified Vaughan's model, whereas computed with Boris leapfrog algorithm. PMT gain, rise time transit have studied as function of supply voltage external magnetostatic field. A good agreement experimental measurements using Hamamatsu R13408-100 was obtained. simulations...
In this article we report on the use micro-focus synchrotron X-ray radiation and pion beams to compare detection efficiencies charge sharing properties of novel 3D detectors that current planar technology. Detector substrates are bump-bonded Medipx2 Timepix chips. 55¿m square pixel maps have been produced using MIP beams. For X-rays, a drop 3-4% efficiency over area was found due central electrode. The corner electrodes show no degradation in compared device. MIPs 0.5% electrode observed....
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 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...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> The LHCb experiment at CERN is designed to perform precision measurements of b quark decays. Silicon Tracker plays a crucial role in reconstructing particle trajectories and consists two silicon micro-strip detectors, the Turicensis Inner Tracker. radiation environment magnetic field represent new challenges for implementation Experiment Control System (ECS) data acquisition (DAQ). DAQ has deal...
The Vertex Locator (VELO) surrounding the interaction region is used to reconstruct collision points (primary vertices) and decay vertices of long-lived particles (secondary LHCb experiment. VELO detector will be changed for upgrade experiment able run at 5 times higher instantaneous luminosity. modules equipped with 4 silicon hybrid pixel tiles, each read out by 3 VeloPix ASICs. highest occupancy ASICs sustain rates 900 Mhit/s produce an output data rate over 15 Gbit/s, a total 2.9 Tbit/s...
The LHCb Experiment will be upgraded to a trigger-less system reading out the full detector at 40 MHz event rate with all selection algorithms executed in CPU farm. Vertex Locator (VELO) hybrid pixel read by ”VeloPix” ASIC on-chip zero-suppression. A complete design overview of VELO on-detector and off-detector electronics presented. Results on evaluation prototype boards readout firmware are shown.
LHCb is a general purpose experiment instrumented in the forward region at LHC, specialized b- and c- physics, new physics CP violation. The vertex locator (VELO) detector being upgraded along with rest of tracking system readout architecture during 2019-2020. aim this paper to present control firmware on VELO specific back-end boards.