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This paper discusses the development and testing of a C12A7 electride hollow cathode. C12A7:e− is a crystalline ceramic in which electrons clathrated in subnanometer sized cages act as a conductive medium. C12A7:e− has a predicted work function of 0.6 eV and hence is of interest in electron emission devices. A 6-mm diameter hollow cathode was fabricated with a C12A7:e− insert and operated for over...
A 40 kV electron gun is designed and developed using the Pierce configuration for the focusing electrode. Simulations were carried out using CST Particle Studio. The Gun is a thermionic type electron gun with indirect heating of the LaB6 cathode. The gun is capable of delivering a beam current of more than 500 mA at 40 kV with a beam size of less than 5 mm. The cathode assembly consists of cups and...
The 6 MeV X-Ray source for container cargo-scanning application has been designed and developed by the Accelerator & Pulse Power Division, BARC, Mumbai. This compact linac has been designed as a mobile system, to be mounted on a moving container. In linac-based cargo-scanning system, to work electron gun on a movable container, it has to be robust. Electron gun is to work at 10−7 mbar vacuum and...
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