English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The Cornell University Energy Recovery Linac (ERL) photoinjector has recentlydemonstrated operation at 20 mA for approximately 8 hours, utilizing amultialkali photocathode deposited on a Si substrate. We describe the recipefor photocathode deposition, and will detail the parameters of the run.Post-run analysis of the photocathode indicates the presence of significantdamage to the substrate, perhaps due to ion back-bombardment from the residualbeamline gas. While the exact cause of the substrate damage remains unknown, wedescribe multiple surface characterization techniques (X-ray fluorescencespectroscopy, X-ray diffraction, atomic force and scanning electron microscopy)used to study the interesting morphological and crystallographic features ofthe photocathode surface after its use for high current beam production.Finally, we present a simple model of crystal damage due to ionback-bombardment, which agrees qualitatively with the distribution of damage onthe substrate surface.

Photocathode Behavior During High Current Running in the Cornell ERL Photoinjector