Abstract
High brightness electron beam (e-beam) injectors are necessary for seeding the new accelerators. The RF photocathode guns have confirmed the possibility of getting emittances much lower than those provide by thermionic source.1 In particular, metal photocathodes seem to be very promising for their capability to work in degraded vacuum and to work with excimer lasers. They seem also very promising in getting emittances much lower than those provide by thermionic source.2
© 1994 IEEE
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