Time-resolved electron spectrum diagnostics for a free-electron laser

被引：0

作者：

Gillespie, WA ^{[1
]}

MacLeod, AM ^{[1
]}

Martin, PF ^{[1
]}

vanderMeer, AFG ^{[1
]}

vanAmersfoort, PW ^{[1
]}

机构：

[1] FOM,INST PLASMA PHYS RIJNHUIZEN,3439 MN NIEUWEGEIN,NETHERLANDS

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1996年 / 67卷 / 03期

关键词：

D O I：

10.1063/1.1146835

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Time-resolved electron-beam diagnostics have been developed for use with free-electron lasers (FELs) and associated electron sources, based on the techniques of secondary electron emission and optical transition radiation (OTR). The 32-channel OTR detector forms part of a high-resolution (0.18%) electron spectrometer with a time resolution of 50 ns. Variable-magnification optics allow the spectrometer to view single-macropulse spectra with widths in the range of 0.2%-7%; wider spectra are taken with several momentum settings. Design criteria for the spectrometer are presented, and experience of operating with the diagnostics over a range of FEL physics experiments is summarized. The spectrometer is used, in conjunction with optical diagnostics, in studies at FELIX of efficiency enhancement, pulse chirping, and stepped-undulator operation. (C) 1996 American Institute of Physics.

引用

页码：641 / 648

页数：8

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