A laser pulse shaper for the low-emittance radiofrequency SPARC electron gun

被引：8
|
作者：
Cialdi, S
Boscolo, I
机构：
[1] Univ Milan, I-20133 Milan, Italy
[2] Ist Nazl Fis Nucl, I-20133 Milan, Italy
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 526卷 / 03期
关键词：
low emittance; rectangular shaping; system sensitivity; genetic algorithm;
D O I：
10.1016/j.nima.2004.02.035
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
To generate a very low emittance electron beam in a 3-GHz radiofrequency gun, the photocathode has to be driven by a powerful 10-ps light pulse with a rise time of less than I ps. This target pulse can be generated from a subpicosecond laser pulse by inserting an appropriate shaping device. We discuss a programmable 4f grating-lens-shaper configured so as to transform a 100-fs pulse emitted by a Ti:Sa laser into a rectangular pulse with a fast rise time. We analyze the sensitivity of the system to perturbations of the optical-component alignment and input-signal characteristics. We then briefly discuss the acousto-optic programmable dispersive filter shaping system. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：239 / 248
页数：10
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