K2CsSb Cathode Development

Conference · Wed Oct 01 00:00:00 EDT 2008

OSTI ID:970513

Smedley, J; Rao, T; Wang, E

K{sub 2}CsSb is an attractive photocathode for high current applications. With a quantum efficiency of >4% at 532nm and >10% at 355nm, it is the only cathode to have demonstrated an average current of 35mA in an accelerator environment We describe ongoing cathode development work. for the energy recovery linac being constructed at BNL Several cathodes have been created on both copper and stainless steel substrates, and their spatial uniformity and spectral response have been characterized. Preliminary lifetime measurements have been performed at high average current densities (>1 mA/mm{sup 2}).

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: Doe - Office Of Solar Technologies
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 970513
• Report Number(s): BNL-90431-2009-CP; R&D Project: PO24; KB0202; TRN: US1000794
• Resource Relation: Conference: Workshop on Polarized Electron Sources and Polarimeters; Newport News, VA; 20081001 through 20081003
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
36 MATERIALS SCIENCE
ACCELERATORS
BNL
CATHODES
COPPER
ELECTRON SOURCES
ENERGY RECOVERY
LIFETIME
LINEAR ACCELERATORS
PHOTOCATHODES
POLARIMETERS
QUANTUM EFFICIENCY
SPECTRAL RESPONSE
STAINLESS STEELS
SUBSTRATES
Multiple Errors
Dynamic Aperture
Touschek Lifetime
Frequency Map Analysis
Tracking Code