Kelvin probe studies of cesium telluride photocathode for the AWA photoinjector
Creators
- 1. Physics Department at Illinois Institute of Technology, Chicago, IL 60616 (United States)
- 2. Accelerator Science Division at Argonne National Laboratory, Lemont, IL 60439 (United States)
- 3. High Energy Physics Division at Argonne National Laboratory, Lemont, IL 60439 (United States)
- 4. Physics Department at Illinois Institute of Technology, Chicago, IL 60616 and High Energy Physics Division at Argonne National Laboratory, Lemont, IL 60439 (United States)
Description
Cesium telluride is an important photocathode as an electron source for particle accelerators. It has a relatively high quantum efficiency (> 1%), is robust in a photoinjector, and long lifetime. This photocathode is fabricated in-house for a new Argonne Wakefield Accelerator (AWA) beamline to produce high charge per bunch (∼50 nC) in a long bunch train. We present some results from a study of the work function of cesium telluride photocathode using the Kelvin Probe technique. The study includes an investigation of the correlation between the quantum efficiency and the work function, the effect of photocathode aging, the effect of UV light exposure on the work function, and the evolution of the work function during and after photocathode rejuvenation via heating.
Additional details
Identifiers
- DOI
- 10.1063/1.4773797;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 1507
- Journal Issue
- 1
- Journal Page Range
- p. 780-784
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 15. advanced accelerator concepts workshop
- Dates
- 10-15 Jun 2012
- Place
- Austin, TX (United States)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 44035010
- Subject category
- S43: PARTICLE ACCELERATORS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BEAM BUNCHING; BEAM INJECTION; BEAM TRANSPORT; CESIUM TELLURIDES; ELECTRON SOURCES; PARTICLE BEAMS; PHOTOCATHODES; QUANTUM EFFICIENCY; TELLURIDES; ULTRAVIOLET RADIATION; WAKEFIELD ACCELERATORS; WORK FUNCTIONS
- Descriptors DEC
- ACCELERATORS; ALKALI METAL COMPOUNDS; BEAM DYNAMICS; BEAMS; CATHODES; CESIUM COMPOUNDS; CHALCOGENIDES; DYNAMICS; EFFICIENCY; ELECTRODES; ELECTROMAGNETIC RADIATION; FUNCTIONS; LINEAR ACCELERATORS; MECHANICS; PARTICLE SOURCES; RADIATION SOURCES; RADIATIONS; TELLURIDES; TELLURIUM COMPOUNDS
Optional Information
- Notes
- (c) 2012 American Institute of Physics