arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1504.01972physics.acc-ph
收藏

静电储存环中轨道和自旋跟踪的注记

Notes on orbit and spin tracking in an electrostatic storage ring

S. R. Mane

摘要:

最近在arXiv上发表了两篇描述数值积分算法的文献:“全电存储环的辛轨道/自旋跟踪代码”[1]和一些计算结果[2]。本文对[1]和[2]中的某些主张作了批判性的评论。特别地,不清楚[1]中描述的轨道跟踪算法是否真的是辛的。具体地,对于静电束线元件,所谓的“零长度元件”(其在[1]中的形式中被视为位置相关的反冲)实际上是{ \em not}辛的。

英文摘要:

Two documents have recently been posted on the arXiv describing a numerical integration algorithm: "symplectic orbit/spin tracking code for all-electric storage rings" [1] and some computational results therefrom [2]. This note comments critically on some of the claims in [1] and [2]. In particular, it is not clear that the orbit tracking algorithm described in [1] is really symplectic. Specifically, for electrostatic beamline elements, the so-called "zero length elements," which are treated as position dependent kicks in the formalism in [1], are in fact {\em not} symplectic.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑