Compact high-resolution retarding field energy analyzer for space-charge-dominated electron beams

被引：23

作者：

Zou, Y ^{[1
]}

Cui, Y

Yun, V

Valfells, A

Kishek, RA

Bernal, S

Haber, I

Reiser, M

O'Shea, PG

Wang, JG

机构：

[1] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA

[2] Oak Ridge Natl Lab, SNS, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2002年 / 5卷 / 07期

关键词：

D O I：

10.1103/PhysRevSTAB.5.072801

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：

We have developed a compact high-resolution retarding field energy analyzer for measuring the energy spread of space-charge-dominated electron beams. This energy analyzer has a cylindrical electrode to overcome the defocusing effects due to space-charge forces, beam trajectories, aperture effect, etc. The device provides excellent spatial and temporal information on the beam energy spread. Single-particle simulation shows that this energy analyzer has very good resolution for low-energy electron beams of several kilovolts and with large divergence angles. The energy analyzer has been tested with 2.5 keV, 60 mA electron beams. The measured energy spread is also compared with the theoretical calculations taking into account two main energy spread sources, namely, the Boersch effect and the longitudinal-longitudinal relaxation.

引用

页码：7 / 13

页数：7

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