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Field quality and mechanical analysis of the beam separation dipole for HL-LHC upgrade
Sugano; M.; Nakamoto; T.; Xu QJ(徐庆金); Xu; Q.; Kawamata; H.; Todesco; E.
2015
发表期刊IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
卷号25期号:3页码:4001105
文章类型Article
摘要High luminosity upgrade of the Large Hadron Collider (HL-LHC) project has been launched to attain a ten times higher integrated luminosity than the current LHC that has been in operation for over ten years. For this goal, the quadruple and dipole magnets around two interaction points, the ATLAS and the CMS, will be upgraded. High Energy Accelerator Research Organization (KEK) is in charge of developing the new superconducting beam separation dipole magnet (D1). The main dipole field of 5.6 T in a large aperture of 150 mm is generated using a cos-theta coil wound with Nb-Ti cables at nominal operating current of 12.0 kA at 1.9 K corresponding to 75% of the load line ratio. The main challenges for the D1 are larger aperture, a high level of iron saturation, radiation resistance, and tight constraints on field quality. This article summarizes the results of a detailed analysis on field error. Electromagnetic simulation with ROXIE was carried out for the 2-D model of the new D1. As possible design changes, a diameter and position of heat exchanger holes in the iron yoke, and shape of the cryostat were considered. To reveal the influence on systematic error, packing factor of iron yoke, relative permeability of the stainless steel collar, and coil deformation during yoking were reflected to the baseline design. In addition, random geometric error was also estimated. Based on these results, contribution of each factor to field quality is studied.
关键词beam separation dipole Field quality HL-LHC Multipole coefficient Super-conducting accelerator magnets
DOI10.1109/TASC.2014.2364231
收录类别EI
WOS类目545.1 Iron ; 545.3 Steel ; 701.1 Electricity: Basic Concepts and Phenomena ; 704 Electric Components and Equipment ; 708.4 Magnetic Materials ; 741.1 Light/Optics ; 913.3 Quality Assurance and Control
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228903
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实验物理中心
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Sugano,M.,Nakamoto,et al. Field quality and mechanical analysis of the beam separation dipole for HL-LHC upgrade[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,2015,25(3):4001105.
APA Sugano.,M..,Nakamoto.,T..,徐庆金.,...&E..(2015).Field quality and mechanical analysis of the beam separation dipole for HL-LHC upgrade.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,25(3),4001105.
MLA Sugano,et al."Field quality and mechanical analysis of the beam separation dipole for HL-LHC upgrade".IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 25.3(2015):4001105.
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