Coherent error study in a retarding field energy analyzer

被引：2
|
作者：
Cui, Y [1 ]
Zou, Y [1 ]
Reiser, M [1 ]
Kishek, RA [1 ]
Haber, I [1 ]
Bernal, S [1 ]
O'Shea, PG [1 ]
机构：
[1] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2005年 / 544卷 / 1-2期
关键词：
energy spread; electron beam; energy analyzer;
D O I：
10.1016/j.nima.2005.01.286
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A novel cylindrical retarding electrostatic field energy analyzer for low-energy beams has been designed, simulated, and tested with electron beams of several keV, in which space charge effects play an important role. A cylindrical focusing electrode is used to overcome the beam expansion inside the device due to space-charge forces, beam emittance. etc. In this paper, we present the coherent error analysis for this energy analyzer with beam envelope equation including space charge and ernittance effects. The study shows that this energy analyzer can achieve very high resolution (with relative error of around 10(-5)) if taking away the coherent errors by using proper focusing voltages. The theoretical analysis is compared with experimental results. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：527 / 532
页数：6
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