C-AD electron-cooling BNL Photocathode BNL Photocathode R&D R&D An overview of research An overview of research on high quantum on high quantum efficiency photocathodes efficiency photocathodes and associated laser and associated laser systems systems Andrew Burrill HPHB Workshop Nov 9, 2004
BNL Photocathode R&D. An overview of research on high quantum efficiency photocathodes and associated laser systems. Andrew Burrill HPHB Workshop Nov 9, 2004. Photocathode Criteria. High Quantum Efficiency 0.5 A at 351 MHz (1/2 RF frequency) = 1.3nC/bunch Uniform emission surface - PowerPoint PPT Presentation
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
C-AD electron-cooling
BNL Photocathode R&DBNL Photocathode R&DAn overview of research on high An overview of research on high
quantum efficiency photocathodes quantum efficiency photocathodes and associated laser systemsand associated laser systems
Andrew BurrillHPHB WorkshopNov 9, 2004
C-AD electron-cooling
High Quantum Efficiency High Quantum Efficiency 0.5 A at 351 MHz (1/2 RF frequency) = 1.3nC/bunch0.5 A at 351 MHz (1/2 RF frequency) = 1.3nC/bunch
Uniform emission surfaceUniform emission surface Long lifetimeLong lifetime RobustRobust Reproducible preparation techniqueReproducible preparation technique Photoemission at convenient laser Photoemission at convenient laser
wavelengthwavelength
Photocathode CriteriaPhotocathode Criteria
C-AD electron-cooling
Research GoalsResearch Goals
Establish deposition system with a reproducible Establish deposition system with a reproducible optimized recipe optimized recipe
Study Lifetime related issues: Dependence on Study Lifetime related issues: Dependence on laser intensity and wavelength laser intensity and wavelength current density current density ContaminantsContaminants Vacuum conditions Vacuum conditions
Integration into load lock or diamond capsuleIntegration into load lock or diamond capsule