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1.中国科学院上海应用物理研究所 嘉定园区 上海 201800;
2.中国科学院大学 北京 100049
[ "李麒成,男,1988年出生,2010年毕业于中南民族大学,现为博士研究生,研究方向为加速器技术及应用", "LI Qicheng, male, born in 1988, graduated from South-Central University for Nationalities in 2010, doctor student, focusing on accelerator technology and application" ]
李德明,E-mail:lideming@sinap.ac.cn LI Deming, E-mail:lideming@sinap.ac.cn
收稿日期:2016-01-13,
修回日期:2016-03-11,
纸质出版日期:2016-07
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李麒成, 李德明, 何子锋. 一种抑制高压加速管电子负载效应的新方法[J]. 核技术, 2016,39(7):070204
Qicheng LI, Deming LI, Zifeng HE. A new method of suppressing the electronic load effect for high voltage accelerating tube[J]. Nuclear techniques, 2016, 39(7): 070204
李麒成, 李德明, 何子锋. 一种抑制高压加速管电子负载效应的新方法[J]. 核技术, 2016,39(7):070204 DOI: 10.11889/j.0253-3219.2016.hjs.39.070204.
Qicheng LI, Deming LI, Zifeng HE. A new method of suppressing the electronic load effect for high voltage accelerating tube[J]. Nuclear techniques, 2016, 39(7): 070204 DOI: 10.11889/j.0253-3219.2016.hjs.39.070204.
电子负载效应在高压加速管中是需要避免的,因为电子负载效应往往会造成加速管中出现大量的电子流,使得高压难以继续升高,而电子负载效应与加速管中的杂散粒子倍增有关。本文介绍了如何利用透镜电场抑制电子负载效应。通过不等梯度电位形成透镜电场,透镜电场对中心轴上加速的粒子不造成影响,而对远离主轴的杂散粒子起到消散的作用,可以有效地阻止这些杂散粒子长距离飞越,减弱杂散粒子的倍增能力。可见透镜电场能够对电子负载效应起到抑制的作用。
Background
2
In the high voltage accelerating tube
the electronic load effect tends to cause a large amount of electrons flow in the tube
making it difficult to continuously increase the voltage
and thus needs to be avoided. Electronic load effect is related to the multiplication of the stray particles in the accelerating tube.
Purpose
2
This study aims to propose a method to suppress the electronic load effect. Methods: The lens electric field is adopted to eliminate the spray particles. The formation of the lens electric field is built through the unequal gradient potential.
Results
2
The lens electric field has no effect on the main beam on the central axis
but the stray particles that are far away from the central axis are dissipated. It effectively prevents the long distance movement of these stray particles
and weakens the doubling capacity of the stray particles.
Conclusion
2
The lens electric field has an inhibitory effect on the electric load effect for the high voltage accelerating tube.
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