In order to obtain a high charge, low emittance electron source, useful for FEL electron injector and for e+ e− collider experiments, we performed a test experiment on a gallium arsenide photocathode, activated by negative electron affinity technique and illuminated with a 10 ns long laser pulse of 532 nm wavelength. We measured a maximum charge delivered, at relatively low potentials, of about 18 nC/bunch. The mean lifetime is greater than 60 h.
Experimental study on the production of high density electron bunches from a GaAs photocathode
CALABRESE, Roberto;GUIDI, Vincenzo;MASOLI, Francesco Antonio;
1991
Abstract
In order to obtain a high charge, low emittance electron source, useful for FEL electron injector and for e+ e− collider experiments, we performed a test experiment on a gallium arsenide photocathode, activated by negative electron affinity technique and illuminated with a 10 ns long laser pulse of 532 nm wavelength. We measured a maximum charge delivered, at relatively low potentials, of about 18 nC/bunch. The mean lifetime is greater than 60 h.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
