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2013•Unpublished venueRequires access

DEVELOPMENT OF BETTER QUANTUM EFFICIENCY AND LONG LIFETIME IRIDIUM CERIUM PHOTOCATHODE FOR HIGH CHARGE ELECTRON RF GUN

Daisuke Satoh, M. Yoshida

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Abstract

We have been developing a new photocathode material as an electron source for the SuperKEKB electron linac. This injector is required to obtain a low emittance and high charge electron beams in order to achieve the highest luminosity all over the world. The required properties of a new photocathode are reasonably high quantum efficiency (QE > 10 -4 ) and high laser durability to achieve a longterm (> 1 year) accelerator operation. We succeeded in developing an iridium cerium (Ir5Ce) photocathode which has a reasonably high QE (~ 9.1×10 -4

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What this paper is about

We have been developing a new photocathode material as an electron source for the SuperKEKB electron linac. This injector is required to obtain a low emittance and high charge electron beams in order to achieve the highest luminosity all over the world. The required properties of a new photocathode are reasonably high quantum efficiency (QE > 10 -4 ) and high laser durability to achieve a longterm (> 1 year) accelerator operation. We succeeded in developing an iridium cerium (Ir5Ce) photocathode which has a reasonably high QE (~ 9.1×10 -4

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Available abstract

We have been developing a new photocathode material as an electron source for the SuperKEKB electron linac. This injector is required to obtain a low emittance and high charge electron beams in order to achieve the highest luminosity all over the world. The required properties of a new photocathode are reasonably high quantum efficiency (QE > 10 -4 ) and high laser durability to achieve a longterm (> 1 year) accelerator operation. We succeeded in developing an iridium cerium (Ir5Ce) photocathode which has a reasonably high QE (~ 9.1×10 -4

Key concepts: Photocathode, Thermal emittance, Electron, Quantum efficiency, Electron gun, Physics, Optics, Optoelectronics

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DEVELOPMENT OF BETTER QUANTUM EFFICIENCY AND LONG LIFETIME IRIDIUM CERIUM PHOTOCATHODE FOR HIGH CHARGE ELECTRON RF GUN — Research Paper | ScholarLens