Performance of the cold photocathode gun at the electron target of the Heidelberg TSR

被引：0

作者：

Orlov, DA ^{[1
]}

Weigel, U ^{[1
]}

Lestinsky, M ^{[1
]}

Sprenger, F ^{[1
]}

Terekhov, AS ^{[1
]}

Schwalm, D ^{[1
]}

Wolf, A ^{[1
]}

机构：

[1] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

来源：

Spin 2004: 16th International Spin Physics Symposium | 2005年

关键词：

D O I：

10.1142/9789812701909_0190

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A source of ultra cold (<= 10 meV) magnetically guided do electron beams with a transmission mode GaAs-photocathode recently started to be operated at the electron target of the Heidelberg Test Storage Ring. Photocathodes, cooled by liquid nitrogen, show lifetimes of about 10-15 hours at 0.2 mA currents. Atomic hydrogen cleaning was found extremely useful to keep the photocathodes in a closed cycle of operation without removing them from the vacuum setup and allows accordingly almost nonstop measurements with a cold electron target.

引用

页码：943 / 947

页数：5

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