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Title |
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| TUPRC022 |
UPS Study for CsK2Sb Photocathode |
465 |
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- M. Kuriki, T. Konomi, Y. Seimiya
KEK, Ibaraki, Japan
- L. Guo, M. Urano, A. Yokota
HU/AdSM, Higashi-Hiroshima, Japan
- K. Negishi
Iwate University, Morioka, Iwate, Japan
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CsK2Sb photo-cathode is one of the ideal cathode for accelerators requiring the high brightness electron beam. It can be driven with a green laser which can be generated as SHG from solid state laser. The QE (Quantum Efficiency) of photo-electron emission is as high as more than 10% with 532nm light. The material is robust and the typical operational lifetime is more than several months. It is also vital against the high intensity beam extraction. The photo-cathode is generated as a thin film in-situ and the material property and optimized condition for the cathode formation is not understood well. In this article, we present UPS analysis of CsK2Sb cathode for deeper understanding.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2016-TUPRC022
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