Results 31 to 40 of about 8,249 (302)

Kinetic approaches to non-linear particle acceleration at shock fronts [PDF]

open access: yesProceedings of the International Astronomical Union, 2006
AbstractWe review some recent progresses in semi–analytic kinetic approaches to the problem of non linear particle acceleration at non relativistic shock waves.
Stefano Gabici   +3 more
openaire   +1 more source

Beam halo in high-intensity hadron accelerators caused by statistical gradient errors

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2004
The particle-core model for a continuous cylindrical beam is used to describe the motion of single particles oscillating in a uniform linear focusing channel.
Frank Gerigk
doaj   +1 more source

Fast, Efficient and Flexible Particle Accelerator Optimisation Using Densely Connected and Invertible Neural Networks

open access: yesInformation, 2021
Particle accelerators are enabling tools for scientific exploration and discovery in various disciplines. However, finding optimised operation points for these complex machines is a challenging task due to the large number of parameters involved and the ...
Renato Bellotti   +2 more
doaj   +1 more source

2D Particle Filter Accelerator for Mobile Robot Indoor Localization and Pose Estimation

open access: yesIEEE Access
Particle filtering is a reliable Monte Carlo algorithm for estimating the state of a system in modeling non-linear, non-gaussian elements for estimation and tracking applications in various fields, including robotics, navigation, and computer vision ...
Omer Tariq, Dongsoo Han
doaj   +1 more source

Linear Polarization Signatures of Particle Acceleration in High-Synchrotron-Peak Blazars

open access: yesUniverse, 2022
Blazars whose synchrotron spectral energy distribution (SED) peaks at X-ray energies need to accelerate electrons to energies in the >100 GeV range in relativistic plasma jets at distances of parsecs from the central engine. Compton scattering by the same electrons can explain high luminosities at very high photon energies (>100 GeV) from the ...
Alan P. Marscher, Svetlana G. Jorstad
openaire   +3 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Design and performance of a high resolution, low latency stripline beam position monitor system

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2015
A high-resolution, low-latency beam position monitor (BPM) system has been developed for use in particle accelerators and beam lines that operate with trains of particle bunches with bunch separations as low as several tens of nanoseconds, such as future
R. J. Apsimon   +11 more
doaj   +1 more source

Paraxial optics of charged particles in solenoids

open access: yesPhysical Review Accelerators and Beams, 2020
Paraxial optics of charged particles in solenoid magnets with axisymmetric field is considered. Analytic and symplectic transverse maps for charged particle motion through solenoids with 3D magnetic fields have been derived.
Timofey Gorlov
doaj   +1 more source

MCNPX Estimation of Photoneutron Dose to Eye Voxel Anthropomorphic Phantom From 18 MV Linear Accelerator

open access: yesDose-Response, 2023
The dose due to photoneutron contamination outside the field of irradiation can be significant when using high-energy linear accelerators. The eye is a radiation-sensitive organ, and this risk increases when high linear energy transfer neutron radiation ...
Ali AA Alghamdi
doaj   +1 more source

First Proof-of-Concept Prototype of an Additive Manufactured Radio Frequency Quadrupole

open access: yesInstruments, 2021
Continuous developments in additive manufacturing (AM) technology are opening up opportunities in novel machining, and improving design alternatives for modern particle accelerator components.
Toms Torims   +7 more
doaj   +1 more source

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