Simulation of multipacting effect in sub-harmonic buncher cavity of Shanghai Synchrotron Radiation Facility

ZHANG Meng ZHAO Minghua

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Simulation of multipacting effect in sub-harmonic buncher cavity of Shanghai Synchrotron Radiation Facility

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- Simulation of multipacting effect in sub-harmonic buncher cavity of Shanghai Synchrotron Radiation Facility
- NUCLEAR TECHNIQUES Issue 5, (2007)
- 作者机构：
  
  1. 中国科学院上海应用物理研究所
  2. 中国科学院上海应用物理研究所,上海,201800
- 作者简介：
- 基金信息：
- DOI：
  CLC： TL53
- Published：01 May 2007
- 稿件说明：
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[1]张猛,赵明华.上海同步辐射装置次谐波聚束腔中二次电子倍增效应的模拟[J].核技术,2007(05):403-406.

ZHANG Meng ZHAO Minghua. Simulation of multipacting effect in sub-harmonic buncher cavity of Shanghai Synchrotron Radiation Facility[J]. Nuclear techniques, 2007, (5): 403-406.
[1]张猛,赵明华.上海同步辐射装置次谐波聚束腔中二次电子倍增效应的模拟[J].核技术,2007(05):403-406. DOI：

ZHANG Meng ZHAO Minghua. Simulation of multipacting effect in sub-harmonic buncher cavity of Shanghai Synchrotron Radiation Facility[J]. Nuclear techniques, 2007, (5): 403-406. DOI：

摘要

上海光源直线加速器采用一个次谐波聚束腔组成预注入器

其性能的稳定性和可靠性直接关系到电子束流的品质。二次电子倍增效应是其不稳定性的原因之一

为考察其中的二次电子倍增效应

将上海光源次谐波聚束腔与最普通的重入式谐振腔进行对比。结果表明

在实际使用的工作范围内

优化次谐波腔形状可有效抑制其中的二次电子倍增效应。进一步的考察表明

腔体结构的圆滑设计是抑制二次电子倍增的原因。

Abstract

To guarantee reliability of the sub-harmonic buncher (SHB) cavity for the SSRF linac

the program of MultiPac was used to simulate multipacting effect

a possible cause of perturbing injection stability

and to optimize the cavity design. Simulation results of the SSRF cavity

and a simple reentrant cavity as a comparison

show that the optimized SHB cavity can be free from the multipacting effect

as the smooth corner and nose of the cavity can sup- press the multipacting process effectively.

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Related Institution

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