A5064856407- Radiation Detection and Scintillator Technologies
- Advanced Semiconductor Detectors and Materials
- Nuclear Physics and Applications
- Medical Imaging Techniques and Applications
- Advanced X-ray and CT Imaging
- Particle accelerators and beam dynamics
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Nuclear reactor physics and engineering
- Electron and X-Ray Spectroscopy Techniques
- Radiation Therapy and Dosimetry
- Chalcogenide Semiconductor Thin Films
- Semiconductor Quantum Structures and Devices
- CCD and CMOS Imaging Sensors
- Atomic and Molecular Physics
- Advanced Radiotherapy Techniques
- Infrared Target Detection Methodologies
- X-ray Spectroscopy and Fluorescence Analysis
- Radiation Effects in Electronics
- Semiconductor materials and devices
- Electronic and Structural Properties of Oxides
- Plasma Diagnostics and Applications
- Graphite, nuclear technology, radiation studies
Unidades Centrales Científico-Técnicas
2002-2024
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2014-2024
Universitat Politècnica de València
2020
Universidad Complutense de Madrid
2007-2019
Industrial University of Santander
2013
Stanford University
2010
Institut National de la Recherche Agronomique
2010
Western New England University
2006
New England College
2006
Leitat Technological Center
2003
Time-of-Flight positron emission tomography scanners demand fast and efficient photo sensors scintillators coupled to readout electronics. This article presents the high resolution flexible Time-over-Threshold (HRFlexToT), a 16-channel application-specific-integrated circuit for silicon photomultipliers (SiPM) anode manufactured using XFAB 0.18- <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\mu \text{m}$...
The application of adaptive methods to the solution automatic radioisotope identification problem using energy spectrum is described. carried out by means neural networks, which allow use relatively reduced computational structures, while keeping high pattern recognition capability. In this context, it has been found that one these simple once adequately trained, quite suitable identify a given isotope present in mixture elements as well relative proportions each identified substance....
By comparison to the cellular constituents of retinas certain other diving mammals, elements dolphin retina include an unusually large number specialized cells. Both cone and rod receptors may be identified. An unusual amacrine cell seen which produces a process that spans cells between inner plexiform outer layers. Most is layer giant ganglion appears serve most central retina. The support dendrites optic nerve fibers range up 8 micrometers in diameter.
In this work, we compare two commercial positron emission tomography (PET) scanners installed at CIEMAT (Madrid, Spain): the ClearPET and rPET-1. These systems have significant geometrical differences, such as axial field of view (110 mm on versus 45.6 rPET-1), configuration detectors (whole ring one pair planar blocks rPET-1) use an shift between detector modules. We used assessment procedure that fulfilled recommendations National Electrical Manufacturers Association (NEMA) NU 4-2008...
A front end application specific integrated circuit (ASIC) for the readout of common cathode Silicon Photo-Multipliers arrays is presented with following features: wide dynamic range, high speed, multi channel, low input impedance current amplifier, power (≈10mW per channel), connection, directly coupled mode voltage control and separated timing charge signal output.A 16 channel prototype independent outputs energy pile-up detection a single fast output described. The jitter processing...
A collaborative study involving six European laboratorios from five countries (Belgium, France, Italy, Portugal and Spain) was undertaken to assess the reproducibility of an standard method for in vivo determination diet digestibility compare results obtained with domestic procedures. The carried out on 49-day-old rabbits caged individually fed ad libitum; it included adaptation period 7 days followed by a collection 4 days. coefficients dry matter (dDM), organic (dOM), energy (dE), crude...
Abstract A comparative study of four different metals gold (Au), platinum (Pt), ruthenium (Ru) and rhodium (Rh) deposited on CdZnTe(CZT) by the electroless deposition method has been carried out. Two these materials, Ru Rh, have for first time this method. In contrast to Pt deposition, Rh were not out under optimal conditions. The samples identified Total reflection X‐ray Fluorescence (TXRF). Rutherford Backscattering Spectrometry (RBS) analyses show that Au forms thickest layer (∼160 nm)...
MCBXF magnets are orbit nested correctors for the HL-LHC project, an upgrade of Large Hadron Collider (LHC). The magnet design consists two dipoles, with aperture 150 mm. have been designed in physical lengths, namely 2.5 m (MCBXFA) and 1.5 (MCBXFB), same cross section according to necessities. Two prototypes first series short version were manufactured at CIEMAT assembled CERN. production rest magnets, 6 long 11 (MCBXFB) is being carried out premises company Elytt Energy. In this paper...
Two types of nested orbit correctors are necessary for LHC upgrade, the so-called MCBXFA and MCBXFB. They share same cross section, but feature different lengths, 2.5 1.5 m, respectively. The power tests performed on two MCBXFB prototypes showed excellent performance when individually powered, training to reach nominal torque in combined operation was very long. Moreover, memory lost after direction reversal. A detailed analysis test results concluded that origin problem insufficient support...
MCBXF magnets are nested orbit combined correctors for the upgrade of LHC. Two prototypes and first series magnet were manufactured at CIEMAT assembled CERN, in framework HL-LHC project. A fine tuning inner dipole design was introduced to improve mechanical support coil ends, with a significant performance improvement. The contract supply rest magnets, 6 long (MCBXFA) 11 short (MCBXFB) has been awarded company Elytt Energy. This paper depicts manufacturing powering test results MCBXFB...
An energy deposition model for electrons in air that can be useful microdosimetric applications is presented this study. The based on a Monte Carlo simulation of the single electron scattering processes take place with molecular constituents range 10–10 000 eV. input parameters procedure have been cross sections, both differential and integral. These were calculated using potential method which describes constituent air. reliability integral section values has evaluated by comparison direct...
Abstract The influence of deposition methods and type metal contacts on the defects generated at metal/semiconductor interface has been investigated. Photoluminesccence spectra a low temperature demonstrated that Au electroless samples exhibit lowest I (D 0 ,X) / A-center ratio have best gamma response. Rutherford backscattering spectrometry results show sputtering method creates highest concentration TeO 2 layer compared with evaporation methods. more inter-diffusion between contact CZT...
A Front End ASIC for the readout of Silicon Photo-Multipliers is presented with following features: wide dynamic range, high speed, multi channel, low input impedance current preamplifier, power (7mW per channel), DC coupled common mode voltage control and separated timing charge signal output. detailed description SiPM modeling parameter extraction also included allowing emulation generated by different commercial devices in design simulation stage. Current prototype first step a more...
Proton therapy allows the treatment of specific areas and avoids surrounding tissues. However, this technique has uncertainties in terms distal dose fall-off. A promising approach to studying proton range is use nanoparticles as proton-activatable agents that produce detectable signals. For this, we developed an iron oxide nanoparticle doped with Zn (IONP@Zn-cit) a hydrodynamic size 10 nm stability serum. Cytotoxicity, defined half surveillance, was 100 μg Zn/mL U251 cell line. The effect on...
A modified experimental apparatus with improved angular resolution and stability has been used to measure the total electron scattering cross sections for $\mathrm{S}{\mathrm{F}}_{6}$ $\mathrm{S}{\mathrm{F}}_{5}\mathrm{C}{\mathrm{F}}_{3}$ in energy range of $100--5000\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$. detailed analysis error sources is provided. The results are compared integral elastic inelastic calculated using independent atom model approximation a single-center additivity rule...
We have implemented and evaluated a positron emission tomography (PET) demonstrator using two monolithic detector blocks operating in coincidence with dedicated application-specific integrated circuit (ASIC) readout. Each is composed of lutetium yttrium orthosilicate (LYSO) scintillator coupled to pair Hamamatsu S8550-02 APD arrays. The front-end electronics this based on the VATA240 ASIC readout, which sums charge provided by each row column array. has been characterized obtaining noise per...
The present paper describes the development process of a low critical temperature superconducting magnet to be installed in compact cyclotron producing single-dose radioisotopes for clinical and preclinical applications. After brief description accelerator, is described, starting from magnetic, mechanical, quench, thermal calculations, continuing with designing process, particularly support structure cryogenic supply system, finish fabrication first tests than have been performed.
Nested combined orbit correctors are needed for the upgrade of LHC. They developed at CIEMAT, in collaboration with CERN framework HL-LHC project. There two types magnets, so-called MCBXFA and MCBXFB, different lengths (2.5 1.5 m, respectively), but sharing same cross section. The coils both magnets wound Rutherford-type NbTi cable, composed 18 strands 0.48 mm diameter, insulated a braided glass fiber sleeve. Various magnet protection schemes were considered MCBXF magnets. In this work,...