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Modélisation et caractérisation du faisceau d'électrons dans les canons de tubes cathodiques de téléviseurs

Abstract : The demands in terms of accuracy of the latest wide screen TV sets are not fulfilled by the classical simulation codes, which are time consuming, heavy, and for which the content is not perfectly known. In order to use some simple and fast tools, and to improve the physical knowledge, the modelling of the electron beam in the guns was adopted, as well as the set up of an emittance measurement method.
First, we present the creation of a current generation model, which is analytical for 2D guns, and then generalised semi analytically to 3D guns. The tool obtained is simple (few parameters are involved), fast, and very accurate, according to the comparisons made with the experiment.
Then, in an experimental part, we describe the set up of an emittance measurement method in a plane of the gun, which is based on the 3 gradients method used in the particle accelerators field. Various tests showed that it was accurate, repeatable, and discriminative for the different type of guns.
At last, we explain the analytical modelling of the beam creation, first in 2D, then generalised to the 3D case. The tool created is accurate, simple, and fast. We managed as well to transport the native beam obtained through the gun up to the screen in order to compare it with the experimental values.
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https://tel.archives-ouvertes.fr/tel-00147266
Contributor : Olivier Doyen <>
Submitted on : Wednesday, May 16, 2007 - 1:41:24 PM
Last modification on : Thursday, November 19, 2020 - 12:58:50 PM
Long-term archiving on: : Wednesday, April 7, 2010 - 3:37:50 AM

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  • HAL Id : tel-00147266, version 1

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Olivier Doyen. Modélisation et caractérisation du faisceau d'électrons dans les canons de tubes cathodiques de téléviseurs. Physique [physics]. Université Joseph-Fourier - Grenoble I, 2007. Français. ⟨tel-00147266⟩

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