A new method of mounting stripper foils
Résumé. 2014 Une méthode est proposée pour le montage des feuilles d’épluchage de charge utilisant une grille de tungstène à haute transmission. Cela permet de subdiviser la feuille en un grand nombre de feuilles indépendantes, le mauvais fonctionnement de l’une d’elles n’affecte pas les autres. Il est donc possible d’utiliser une grande feuille que l’on déplace dans le faisceau afin de prolonger sa durée d’utili- sation. Des résultats sont décrits ainsi qu’un mécanisme prototype pour l’exploitation de ce concept. Abstract. 2014 A method of mounting stripper foils is proposed using a high transmission tungsten grid. This enables the foil to be subdivided into a large number of independent foils, failure of any one of which does not effect the rest. It is thus possible to use a large foil moved across the beam to obtain a very long life. The results are shown and a prototype mechanism to exploit this concept is described.
USE OF CARBON FOILS FOR HEAVY-ION STRIPPERS.
Abstract The lifetime of carbon foils when bombarded by high-density heavy-ion beams is increased if the foil is kept at a high temperature.
Microwave source with enhanced radiation power based on orbitron MASERs
We have proposed the design of high power microwave source in a vacuum tube based on the theory of negative mass instability. The proposed source does not operate based on a slow-wave structure but instead makes use of accelerated charged particles. In our structure, an electron emitter injects the charged particles into to the cavity. Emitted particles move around the anode, which leads to electron acceleration and emission of electromagnetic waves with a specific frequency. In this paper, we have enhanced the output power and frequency of microwave source by variation of particles initial energy and the number of anodes incorporating their specific arrangement and applied voltages. Working at room temperature, compactness, wide bandwidth, and tunability of output frequency are among the advantages of the proposed source.