Study of bi-alkali photocathode growth on glass by X-ray techniques for fast timing response photomultipliers

Junqi Xie, Marcel Demarteau, Robert Wagner, Miguel Ruiz-Oses, Xue Liang, Ilan Ben-Zvi, Klaus Attenkofer, Susanne Schubert, John Smedley, Jared Wong, Howard Padmore, Arthur Woll

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Bi-alkali antimonide photocathode is an essential component in fast timing response photomultipliers. Real-time in-situ grazing incidence x-ray diffraction and post-growth x-ray reflectivity measurement were performed to study the photocathode deposition process on glass substrate. Grazing incidence x-ray diffraction patterns show the formation of Sb crystalline, dissolution of crystalline phase Sb by the application of K vapor and reformation of refined crystal textures. XRR result exhibits that the film thickness increases ∼ 4.5 times after K diffusion and almost have no change after Cs diffusion. Further investigation is expected to understand the photocathode growth process and provide guidelines for photocathode development.

Original languageEnglish
Title of host publicationOptical Components and Materials XI
PublisherSPIE
ISBN (Print)9780819498953
DOIs
StatePublished - 2014
Externally publishedYes
EventOptical Components and Materials XI - San Francisco, CA, United States
Duration: Feb 3 2014Feb 5 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8982
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Components and Materials XI
Country/TerritoryUnited States
CitySan Francisco, CA
Period02/3/1402/5/14

Funding

FundersFunder number
National Stroke Foundation
Office of Basic Energy Sciences
Office of High Energy Physics

    Keywords

    • Alkali Antimonide
    • Photocathode
    • Photomultipliers
    • X-ray diffraction
    • X-ray reflectivity

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