ERL2015 - List of Authors (Kuehn, J.)

Paper	Title	Page
TUICLH1030	Improving the Smoothness of Multialkali Antimonide Photocathodes: An In-Situ X-Ray Reflectivity Study	27
	Z. Ding, E.M. Muller SBU, Stony Brook, New York, USA K. Attenkofer, M. Gaowei, J. Sinsheimer, J. Smedley, J. Walsh BNL, Upton, Long Island, New York, USA H. Bhandari Radiation Monitoring Devices, Watertown, USA H.J. Frisch Enrico Fermi Institute, University of Chicago, Chicago, Illinois, USA J. Kühn HZB, Berlin, Germany H.A. Padmore, S.G. Schubert, J.J. Wong LBNL, Berkeley, California, USA J. Xie ANL, Argonne, Illinois, USA
	Multialkali antimonide photocathodes have been shown to be excellent electron sources for a wide range of applications because of high quantum efficiency, low emittance, good lifetime, and fast response. In recent years, synchrotron X-ray methods have been used to study the growth mechanism of K2CsSb photocathodes. The traditional sequential growth of CsK2Sb has been shown to result in rough surface, which will have an adverse impact on the emittance of the electron beam. However, co-evaporation of alkali metals on the evaporated Sb layer and sputter deposition may offer a route to solving the roughness problem. Recent studies on K2CsSb grown by these methods are presented and surface roughness is determined by X-ray reflectivity (XRR) and results are compared.
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THPTHL072	CsK2Sb Photocathode Development for BERLinPro	97
	M. Schmeißer, A. Jankowiak, T. Kamps, J. Kühn HZB, Berlin, Germany
	In order to generate high brightness and high-current electron beams for BERLinPro, an SRF photoinjector is being developed at HZB. Normal conducting CsK2Sb cathodes will be used due to their high QE at visible wavelengths and fast response time. We report on the commissioning of a preparation and analysis system that allows investigation of the surface and bulk chemical composition of the cathodes using XPS and ion scattering. In addition, the design of an UHV transport system for cathodes is presented.
	Slides THPTHL072 [2.664 MB]
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Paper

Title

Page

Improving the Smoothness of Multialkali Antimonide Photocathodes: An In-Situ X-Ray Reflectivity Study

27

Z. Ding, E.M. Muller
SBU, Stony Brook, New York, USA
K. Attenkofer, M. Gaowei, J. Sinsheimer, J. Smedley, J. Walsh
BNL, Upton, Long Island, New York, USA
H. Bhandari
Radiation Monitoring Devices, Watertown, USA
H.J. Frisch
Enrico Fermi Institute, University of Chicago, Chicago, Illinois, USA
J. Kühn
HZB, Berlin, Germany
H.A. Padmore, S.G. Schubert, J.J. Wong
LBNL, Berkeley, California, USA
J. Xie
ANL, Argonne, Illinois, USA

Multialkali antimonide photocathodes have been shown to be excellent electron sources for a wide range of applications because of high quantum efficiency, low emittance, good lifetime, and fast response. In recent years, synchrotron X-ray methods have been used to study the growth mechanism of K2CsSb photocathodes. The traditional sequential growth of CsK2Sb has been shown to result in rough surface, which will have an adverse impact on the emittance of the electron beam. However, co-evaporation of alkali metals on the evaporated Sb layer and sputter deposition may offer a route to solving the roughness problem. Recent studies on K2CsSb grown by these methods are presented and surface roughness is determined by X-ray reflectivity (XRR) and results are compared.

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPTHL072

CsK2Sb Photocathode Development for BERLinPro

97

M. Schmeißer, A. Jankowiak, T. Kamps, J. Kühn
HZB, Berlin, Germany

In order to generate high brightness and high-current electron beams for BERLinPro, an SRF photoinjector is being developed at HZB. Normal conducting CsK2Sb cathodes will be used due to their high QE at visible wavelengths and fast response time. We report on the commissioning of a preparation and analysis system that allows investigation of the surface and bulk chemical composition of the cathodes using XPS and ion scattering. In addition, the design of an UHV transport system for cathodes is presented.

Slides THPTHL072 [2.664 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)