Symmetric long straight section lattices for 2, 4, and 8 sectors.

[摘要] Long straight sections (LSS) are anticipated to be one of the significant changes to the accelerator as part of the APS Renewal. Previously, we developed a lattice with eight LSS that, while workable, would have presented some operational challenges. In the present note, we show improved results for 8LSS, along with new solutions for 4LSS and 2LSS. As before, these lattices are developed by removing the Q2 quadrupoles and moving the Q1 back into its place, permitting a 7.7-m-long insertion device (as judged by the increase in face-to-face distance for the innermost powered quadrupoles). Further increases in length (perhaps 10%) might be possible by removing corrector magnets, but at present we have not considered this in detail.

[发布日期] 2009-09-29

[学科分类] 核物理和高能物理

[关键词] ACCELERATORS;MAGNETS;QUADRUPOLES