Conceptual design of a vacuum system for a compact, high luminosity CESR upgrade

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 2001-05-01 DOI:10.1109/PAC.1999.795546

K. Ormond, J. Rogers

{"title":"Conceptual design of a vacuum system for a compact, high luminosity CESR upgrade","authors":"K. Ormond, J. Rogers","doi":"10.1109/PAC.1999.795546","DOIUrl":null,"url":null,"abstract":"A conceptual design study for a vacuum system for a possible compact high luminosity upgrade to CESR is presented. The vacuum chamber consists of an elliptical cross-section beam chamber connected to a pumping chamber by holes recessed in several channels in the beam chamber wall. Recessing the hole provides a decrease in the impedance of the beam chamber while still providing protection to the pumping chamber from RF fields generated by the beam. The beam chamber has a very compact cross-section compatible with two-in-one quadrupole magnets and inexpensive compact dipole magnets. Pumping will be provided by a combination of nonevaporable getter (NEG) and ion pumps. Calculations were carried out of the impedance and loss factor of the chamber as well as transmission of RF field power through the slots and the conductance of the pumping slots. We have also calculated the linear synchrotron radiation power density and the pressure profile and beam-gas lifetime for this chamber and pump configuration. We consider the time between necessary NEG pump reactivations and the total capacity of the pumps.","PeriodicalId":20453,"journal":{"name":"Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PAC.1999.795546","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

A conceptual design study for a vacuum system for a possible compact high luminosity upgrade to CESR is presented. The vacuum chamber consists of an elliptical cross-section beam chamber connected to a pumping chamber by holes recessed in several channels in the beam chamber wall. Recessing the hole provides a decrease in the impedance of the beam chamber while still providing protection to the pumping chamber from RF fields generated by the beam. The beam chamber has a very compact cross-section compatible with two-in-one quadrupole magnets and inexpensive compact dipole magnets. Pumping will be provided by a combination of nonevaporable getter (NEG) and ion pumps. Calculations were carried out of the impedance and loss factor of the chamber as well as transmission of RF field power through the slots and the conductance of the pumping slots. We have also calculated the linear synchrotron radiation power density and the pressure profile and beam-gas lifetime for this chamber and pump configuration. We consider the time between necessary NEG pump reactivations and the total capacity of the pumps.

查看原文本刊更多论文

一个紧凑的真空系统的概念设计，高亮度CESR升级

提出了一种真空系统的概念设计研究，以实现紧凑的高亮度CESR升级。真空室由椭圆截面的束流室组成，通过束流室壁上若干通道内的凹孔与抽气室相连。凹进孔可以降低波束室的阻抗，同时仍然可以保护泵送室免受波束产生的射频场的影响。光束室具有非常紧凑的横截面与二合一四极磁铁和廉价的紧凑偶极磁铁兼容。泵送将由非蒸发吸气剂(NEG)和离子泵的组合提供。计算了腔室的阻抗和损耗因子，以及射频场功率通过槽的传输和泵浦槽的电导。我们还计算了线性同步辐射功率密度和压力分布以及这种腔室和泵配置的束气寿命。我们考虑必要的NEG泵再激活和泵的总容量之间的时间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)

自引率

0.00%

发文量