Results 61 to 70 of about 12,545,070 (225)

Realistic undulators for intense gamma-ray beams at future colliders [PDF]

open access: yes, 2015
The baseline designs for the ILC and CLIC require the production of an intense flux of gamma rays in their positron sources. In the case of CLIC the gamma rays are produced by a Compton backscattering source, but in this paper we concentrate on undulator-
Alrashdi, Ayash, Bailey, Ian, Newton, D.
core  

Vigorous atmospheric motion in the red supergiant star Antares

open access: yes, 2017
Red supergiant stars represent a late stage of the evolution of stars more massive than about nine solar masses, in which they develop complex, multi-component atmospheres.
Hofmann, K. -H., Ohnaka, K., Weigelt, G.
core   +1 more source

Visual Field Map Organization in Human Visual Cortex

open access: yes, 2012
The search for organizing principles of visual processing in cortex has proven long and fruitful, demonstrating specific types of organization arising on multiple scales (e.g., magnocellular / parvo-cellular pathways [1] and ocular dominance columns [2]).
A. Brewer, B. Barton
semanticscholar   +1 more source

Analytical expressions for fringe fields in multipole magnets

open access: yes, 2014
Fringe fields in multipole magnets can have a variety of effects on the linear and nonlinear dynamics of particles moving along an accelerator beamline. An accurate model of an accelerator must include realistic models of the magnet fringe fields. Fringe
Jones, J. K.   +2 more
core   +2 more sources

Towards Personally Relevant Navigation: The Differential Effects of Cognitive Style and Map Orientation on Spatial Knowledge Development

open access: yesApplied Sciences
Under emergencies such as floods and fires or during indoor navigation where cues from local landmarks and a Global Positioning System (GPS) are no longer available, the acquisition of comprehensive environmental representation becomes particularly ...
Hannah Park   +2 more
doaj   +1 more source

Beam Optics Modeling at Cps Extraction Throughout A Nonlinear fringe field [PDF]

open access: yes, 1997
An accurate optics model of the CPS ring in the extraction region, where the lateral fringe field is highly non-linear, is of importance for transverse emittance preservation of beams for the future LHC.
Manglunki, Django, Martini, M
core  

Feasibility of the Spin-Light Polarimetry Technique for Longitudinally Polarized Electron Beams

open access: yes, 2013
A novel polarimeter based on the asymmetry in the spacial distribution of synchrotron radiation will make for a fine addition to the existing M{\o}ller and Compton polarimeters.
Dutta, Dipangkar, Mohanmurthy, Prajwal
core   +2 more sources

Simulation of gain stability of THGEM gas-avalanche particle detectors

open access: yes, 2017
Charging-up processes affecting gain stability in Thick Gas Electron Multipliers (THGEM) were studied with a dedicated simulation toolkit. Integrated with Garfield++, it provides an effective platform for systematic phenomenological studies of charging ...
Azevedo, C. D. R.   +8 more
core   +1 more source

Wide Field Mapping of 5C12 [PDF]

open access: yesInternational Astronomical Union Colloquium, 1991
AbstractThe existing method of producing radio maps from interferometric data set is based on the assumption that there is a two dimensional fourier transform relationship between the sky brightness and the measured visibility. In mapping of a very wide field, this basic assumption breaks down due to various practical problems, e.g. bandwidth smearing.
J. E. Okopi, L. B. Bååth
openaire   +1 more source

The Gridded Geomagnetic Field of India with MATLAB GUI

open access: yesData Science Journal
A unique two-dimensional gridded geomagnetic map of India is constructed using the geomagnetic field observations from 11 observatories of India, operated by the Indian Institute of Geomagnetism. In order to create the spatial grid, 11 spatial techniques
Jayashree Bulusu   +6 more
doaj   +1 more source

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