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200 keV Polarized Electron Source at Nagoya University

 

作者: K. Wada,   M. Yamamoto,   T. Nakanishi,   S. Okumi,   T. Gotoh,   C. Suzuki,   F. Furuta,   T. Nishitani,   M. Miyamoto,   M. Kuwahara,   T. Hirose,   R. Mizuno,   N. Yamamoto,   H. Matsumoto,   M. Yoshioka,  

 

期刊: AIP Conference Proceedings  （AIP Available online 1903）
卷期: Volume 675, issue 1  

页码: 1063-1067

 

ISSN:0094-243X

 

年代: 1903

 

DOI:10.1063/1.1607297

 

出版商: AIP

 

数据来源: AIP

 

摘要:

200 keV polarized electron source with load‐lock system has been constructed to produce a beam with high peak current and low emittance that are required by a future linear collider. GaAs photocathode was cleaned by atomic hydrogen and dark currents between the electrodes of the gun that degrade an NEA (Negative Electron Affinity) surface of photocathode could be reduced to less than 1 nA at 200 kV. Recent data on photocathode preparation and dark current measurement are reported in this paper. © 2003 American Institute of Physics

 

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