Design, optimization and commission of a multi-reflection time-of-flight mass analyzer at IMP/CAS

17 Jul 2019, 09:30
30m
Ball Room (McGill University)

Ball Room

McGill University

Thomson House 3650 McTavish Montreal, Quebec, H3A 1Y2 Canada

Speaker

Mr Yongsheng Wang (Institute of Modern Physics, Chinese Academy Science)

Description

A multi-reflection time-of-flight mass analyzer is being constructed for isobaric separation and mass measurement at IMP/CAS (Institute of Modern Physics, Chinese Academy Science). A new method including two sub-procedures, global search and local refinement, has been developed for the design of MRTOF mass analyzer. The method can be used to optimize the parameters of MRTOF-MS both operating in mirror-switching mode and in-trap-lift mode. By using this method, an MRTOF mass analyzer, in which each mirror consists of five cylindrical electrodes, has been designed. In the mirror-switching mode, the maximal mass resolving power has been achieved to be 1.3 × 10$^5$ with a total time-of-flight of 6.5 ms for the ion species of $^{40}$Ar$^{1+}$ [1], and in the in-trap-lift mode, it is 1.6 × 10$^5$ with a total time-of-flight of 6.4 ms [2]. The simulation also reveals the relationships between the resolving power and the potentials applied on the mirror electrodes, the lens electrode and the drift tube.
This MRTOF-MS has been constructed and is being commissioning now. The preliminary test results show that it works [2].
In this conference, we will present the design details, optimization method and the test results obtained.

References:
[1] Y.L. Tian, Y.S. Wang, J.Y. Wang, et al., Int. J. Mass Spectrom. 408, 28–32 (2016).
[2] Jun-Ying Wang, Yu-Lin Tian, Yong-Sheng Wang, et al., Nucl. Instrum. Meth. B, (2019).

e-mail: yswang629@impcas.ac.cn

Primary author

Mr Yongsheng Wang (Institute of Modern Physics, Chinese Academy Science)

Co-authors

Prof. Wenxue Huang (Institute of Modern Physics, Chinese Academy Science) Dr Yulin Tian (Institute of Modern Physics, Chinese Academy Science) Mrs Junying Wang (Institute of Modern Physics, Chinese Academy Science) Prof. Xiaohong Zhou (Institute of Modern Physics, Chinese Academy Science) Prof. Hushan Xu (Institute of Modern Physics, Chinese Academy Science)

Presentation Materials

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