Search results for "accelerator"
showing 10 items of 1507 documents
SEU characterization of commercial and custom-designed SRAMs based on 90 nm technology and below
2020
International audience; The R2E project at CERN has tested a few commercial SRAMs and a custom-designed SRAM, whose data are complementary to various scientific publications. The experimental data include low- and high-energy protons, heavy ions, thermal, intermediate- and high-energy neutrons, high-energy electrons and high-energy pions.
A quantitative insight into the impact and performance of seed accelerators and their accelerated start-ups
2020
El tema de investigación de esta tesis es el estudio de las aceleradoras de emprendimiento (AE), consideradas la nueva generación de incubadora de empresas (Bøllingtoft, 2012). Tanto las incubadoras como las aceleradoras permiten a las empresas jóvenes comenzar su actividad a través de un proceso de aprendizaje, consultoría e inversión, con el objetivo de aumentar sus posibilidades de supervivencia y crecimiento en el mercado durante sus primeros meses de vida (Cohen y Hochberg, 2014). El número de AE ha aumentado drásticamente desde la primera Aceleradora conocida en 2005 (Y Combinator), hasta un estimado de más de 3.000 AE en todo el mundo (Hochberg, 2016). Europa en particular, experimen…
"Table 4" of "Spectra and correlations of Lambda and Lambda produced in 340-GeV/c Sigma -+C and 260-GeV/c n+C interactions"
2002
Total inclusive LAMBDA LAMBDA pair production cross sections for the Neutron beam on the Carbon target.
"Table 2" of "Spectra and correlations of Lambda and Lambda produced in 340-GeV/c Sigma -+C and 260-GeV/c n+C interactions"
2002
Total inclusive LAMBDA and LAMBDABAR production cross sections for the Neutron beam on the Carbon target.
Measurement of Atmospheric Neutrino Oscillations at 6–56 GeV with IceCube DeepCore
2018
We present a measurement of the atmospheric neutrino oscillation parameters using three years of data from the IceCube Neutrino Observatory. The DeepCore infill array in the center of IceCube enables the detection and reconstruction of neutrinos produced by the interaction of cosmic rays in Earth's atmosphere at energies as low as ∼5 GeV. That energy threshold permits measurements of muon neutrino disappearance, over a range of baselines up to the diameter of the Earth, probing the same range of L/Eν as long-baseline experiments but with substantially higher-energy neutrinos. This analysis uses neutrinos from the full sky with reconstructed energies from 5.6 to 56 GeV. We measure Δm322=2.31…
Monitoring and data quality assessment of the ATLAS liquid argon calorimeter
2014
The liquid argon calorimeter is a key component of the ATLAS detector installed at the CERN Large Hadron Collider. The primary purpose of this calorimeter is the measurement of electron and photon kinematic properties. It also provides a crucial input for measuring jets and missing transverse momentum. An advanced data monitoring procedure was designed to quickly identify issues that would affect detector performance and ensure that only the best quality data are used for physics analysis. This article presents the validation procedure developed during the 2011 and 2012 LHC data-taking periods, in which more than 98% of the proton-proton luminosity recorded by ATLAS at a centre-of-mass ener…
Central Region Upgrade for the Jyväskylä K130 Cyclotron
2020
The Jyväskylä K130 cyclotron has been in operation for more than 25 years providing beams from H to Au with energies ranging from 1 to 80 MeV/u for nuclear physics research and applications. At the typical energies around 5 MeV/u used for the nuclear physics program the injection voltage used is about 10 kV. The low voltage limits the beam intensity especially from the 18 GHz ECRIS HIISI. To increase the beam intensities the central region of the K130 cyclotron is being upgraded by increasing the injection voltage by a factor of 2. The new central region with spiral inflectors for harmonics 1-3 has been designed. The new central region shows better transmission in simulations than the origi…
"Table 5" of "Global baryon number conservation encoded in net-proton fluctuations measured in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV"
2020
Measured first cumulants of protons.
First operational experience of HIE-ISOLDE
2016
The High Intensity and Energy ISOLDE project (HIE-ISOLDE)* is a major upgrade of the ISOLDE facility at CERN. The energy range of the post-accelerator will be extended from 2.85 MeV/u to 9.3 MeV/u for beams with A/q = 4.5 (and to 14.3 MeV/u for A/q = 2.5) once all the cryomodules of the superconducting accelerator are in place. The project has been divided into different phases, the first of which (phase 1a) finished in October 2015 after the hardware and beam commissioning were completed**. The physics campaign followed with the delivery of both radioactive and stable beams to two different experimental stations. The characteristics of the beams (energies, intensities, time structure and b…
Laser assisted decay spectroscopy at the CRIS beam line at ISOLDE
2012
A new collinear resonant ionization spectroscopy (Cris)beam line has recently been installed at Isolde, Cern utilising lasers to combine collinear laser spectroscopy and resonant ionization spectroscopy. The combined technique offers the ability to purify an ion beam that is heavily contaminated with radioactive isobars, including the ground state of an isotope from its isomer, allowing sensitive secondary experiments to be performed. A new programme aiming to use the Cris technique for the separation of nuclear isomeric states for decay spectroscopy will commence in 2011. A decay spectroscopy station, consisting of a rotating wheel implantation system for alpha decay spectroscopy, and thre…