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IPAC'24 - 15th International Particle Accelerator Conference

19–24 May 2024
Music City Center
US/Central timezone

Scientific Secretariat

Reduction of dark current at cryogenic temperatures in a high gradient photogun

MOPR31
20 May 2024, 16:00
2h
Rock 'n Roll (MCC Exhibit Hall A)

Rock 'n Roll

MCC Exhibit Hall A
Poster Presentation MC3.A16 Advanced Concepts Monday Poster Session

Speaker

Gerard Lawler (University of California, Los Angeles)

Description

The newly commissioned CYBORG (CrYogenic Brightness Optimized Radiofrequency Gun) beamline at UCLA operates in a high gradient, low temperature regime inaccessible to most other existing photoguns and cathode testing infrastructure. The beamline is designed to study electron emission in regime. The final intended configuration of the beamline will be used for studies of novel photocathodes including low mean transverse energy (MTE), high quantum efficiency (QE) semiconductor cathodes dependent on future laser improvement. In the near term, the unique environment allows us to study temperature dependent effects on dark current. Notable reduction in dark current at cryogenic temperatures was observed, a behavior not predicted by Fowler-Nordheim type field emission. Initial results are presented.

Region represented North America
Paper preparation format LaTeX

Primary author

Gerard Lawler (University of California, Los Angeles)

Co-authors

April Smith (University of California, Los Angeles) Atsushi Fukasawa (University of California, Los Angeles) Fabio Bosco (University of California, Los Angeles) James Rosenzweig (University of California, Los Angeles) Oliver Williams (University of California, Los Angeles) Pratik Manwani (University of California, Los Angeles) Yusuke Sakai (University of California, Los Angeles)

Presentation materials

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