Progress on Lead Photocathodes for Superconducting Injectors

Progress on Lead Photocathodes for Superconducting Injectors

We present the results of our investigation of bulk lead, along with various types of lead films, as suitable photocathode materials for superconducting RF injectors. The quantum efficiency of each sample is presented as a function of the photon energy of the incident light, from 3.9 eV to 6.5 eV. Q...

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Hauptverfasser: Smedley, J., Rao, T., Sekutowicz, J., Kneisel, P., Langner, J., Strzyzewski, P., Lefferts, R., Lipski, A.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Cathodes
Cleaning
Coatings
Copper
Niobium
Rough surfaces
Substrates
Superconducting films
Superconducting materials
Surface roughness
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Zusammenfassung:We present the results of our investigation of bulk lead, along with various types of lead films, as suitable photocathode materials for superconducting RF injectors. The quantum efficiency of each sample is presented as a function of the photon energy of the incident light, from 3.9 eV to 6.5 eV. Quantum efficiencies of 0.5% have been obtained. Production of a niobium cavity with a lead-plated cathode is underway.
ISSN:1944-4680
2152-9582
DOI:10.1109/PAC.2005.1591195