Simulations of the isochronous mass spectrometry at the HIRFL-CSR

Simulations of the isochronous mass spectrometry at the HIRFL-CSR
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HIRFL-CSR 上的等时质谱模拟

DOI:
10.1088/0031-8949/2015/t166/014044
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发表时间:
2015-11
期刊:
影响因子:
2.9
通讯作者:
W.
W.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zeng;Q.;Zhang;W.

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开发了用于实验储存环(CSRe)等时质谱学实验的蒙特卡罗模拟程序SimCSR。虽然只考虑了线性分量,但SIMCSR很好地再现了储存在CSRe中的碎片离子的旋转时间,这些碎片离子是在58Ni?>初级束碎裂中产生的。旋转时间的标准差受相位滑移因子、相对动量差的宽度和磁场不稳定性的强烈影响。在仿真的基础上,对减小旋转时间标准差的方法进行了概述和讨论。
A Monte-Carlo simulation code, named as SimCSR, has been developed for the isochronous mass spectrometry experiments in the experimental storage ring (CSRe). The revolution times of the fragments ions stored in the CSRe, which were produced in the fragmentation of 58 Ni ?> primary beam are reproduced very well by the SimCSR, although only linear components are considered. The standard deviation of the revolution time is found to be strongly affected by the phase slip factor, the width of the relative momentum difference and the instability of magnetic field. Based on the simulations, we outline and discuss the methods to reduce the standard deviation of the revolution time.
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