Necesito ayuda para hacer una exposición sobre el fundamento físico de aceleración de electrónica

¿K tal? .. Necesito tu ayudaa en 5 dias tengo una exposicion y no encuentro el temaa.. Si puedes escribemelo o sino pasame la pagina donde esta todo referente al tema---
El tema es :
Fundamento fisico de aceleracion electronicos:
* Equipos de aceleradores de electrones
1

1 Respuesta

12.375 pts. - Ingeniero Tecnico Industrial Químico +....
No sé a qué nivel ni la extensión de la exposición, pero ahí van unos links selectos:
http://exa.unne.edu.ar/depar/areas/fisica/electymagne/TEORIA/elecmagnet/movimiento/lineal/lineal.htm
Un montón de libros de física descargables para hacer más búsquedas de teoría:
http://bibliotheka.org/?/clasif/74
y
http://bioinstrumentacion.eia.edu.co/docs/bio/.../AceleradorLineal.pdf
www.sefm.es/docs/acelerador/tema1.pdf
http://www.es.wikipedia.org/wiki/Acelerador_lineal
http://www.200.0.198.11/MenoriaT/Mt00/Mt49-00.pdf
En inglés:
http://www.freepatentsonline.com/5489783.html
Máquinaria:
http://www.radiabeam.com/literature/productinfo.html
Este texto:
Electron Accelerators
All electron accelerators include a source (of electrons), an evacuated accelerating chamber, and a system for extraction from the vacuum and distribution over the product surface. Most obtain their electrons from a heated filament source (similar to that of a TV tube) called the electron gun. The energy of these electrons is then increased in one or more stages as they pass through a vacuum with an applied electric field. There are numerous ways to generate this electric field. DC accelerators generate and maintain the full accelerating voltage between just two electrodes. As the voltage is raised to millions of volts, electrical insulation becomes a major engineering problem. Even at low powers, these accelerators can have dimensions exceeding 15m (45 feet). For systems with both the energy and the power needed for industrial irradiation, the most common commercially available models are the Dynamitron®, and Insulated Core Transformer (ICT). The maximum voltage available is usually less than 5 MeV.
A second family of particle accelerators is based on radio frequency (rf) power technology. These high frequency waves generate very intense electrical and magnetic fields in suitably shaped conducting cavities. By matching the field oscillations with the injection of charged particles, the rf fields can drive the particles to high energies without having to create the full final potential at any one instant. They do not therefore require the large scale insulation of DC units and are more compact. They can easily reach energies of 10 MeV, and currently are available in models reaching up to 200 kW of electron beam power.
The rf accelerators that employ a linear series of rf cavities are called linacs. The assembly of copper cavities is referred to variously as a structure, a guide or a waveguide. They operate either at an rf frequency of 3 GHz (known as S-band; more compact but generally limited to beam powers below 20 kW) or 1 GHz (L-band; physically larger but capable of beam powers considerably above 20 kW). The accelerating structure of a typical 10 MeV industrial linac is 2-4m long. The main power tube for linacs is the klystron. These tubes are expensive and have limited operating life. Their replacement expense can become a significant fraction of the operating cost.
A more compact rf accelerator (the Rhodotron®) has been developed. This device generates radial accelerating fields in a single cavity and uses an array of magnets to pass the beam through this cavity zone on repeated orbits. The accelerating structure for the higher power models is a tank about 1.5 m diameter systems).
Differences in physical size between dc and rf accelerators are significant because dc accelerators require costly larger buildings and shields. Differences between the rf models are less important once the total cost of the shielded facility has been included..
Production staff must be protected from the radiation source. This protection or shielding is usually provided by placing the source inside a concrete vault and passing the product into the radiation zone through a maze. Commonly used material for radiation shields are concrete, steel and lead. The thickness of a lead shield will be about 1/5th that of concrete. The higher cost of lead and steel however generally make them uneconomic for all but in-line sterilizers.
A reduction of the level of radiation to less than 1/1,000,000 of the source level is necessary and this requires about 2.5 m of concrete for a 10 MeV beam or 2.0 m for 5 MeV accelerators.
Radiation itself causes degradation in the product conveyor components, particularly where any plastics or lubricants are used. In addition, radiation beams form high concentrations of ozone in air and this is both corrosive and hazardous. To combat the corrosion, extensive use is made of stainless steel and a regular inspection and replacement schedule for sensitive parts has to be established. All radiation plants need powerful ventilation systems to remove the ozone.
Es de la página http://pfc-cr.net/productos2255091.html y lo puedes pegar en alguno de los traductores de la dirección:
http://pfc-cr.net/productos2255091.html
Para pasarlo a castellano y verlo más claro.
Espero que te sirva, lamento no tener nada de "cosecha propia".
Suerte!

Añade tu respuesta

Haz clic para o

Más respuestas relacionadas