Abstract
Simulation of IMS systems is important for gaining insight into the role of its geometric and operational parameters. Using two simulation programs, SIMION and LORENTZ, this study looks into questions pertaining to miniaturization, dimensional disparity across different geometrical axes, and the drift cell medium, both gas and liquid phase. Additionally, we address key physics issues related to space-charge effects and induced current by varying gate pulse width and input charge. This study determines the comparative merits of the two simulation programs, from both computational effectiveness and efficiency standpoints. We explain the necessary techniques for applying these programs to IMS, and we describe similarities and differences of the methods of the programs and how they affect their suitability for simulation of IMS.
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Acknowledgments
This work was supported by the iSPE MITRE Innovation Program. We thankfully acknowledge valuable technical discussions and direct support on this topic from the Defense Threat Reduction Agency and Joint Project Manager for Nuclear Biological Chemical Contamination Avoidance. We thank Jarosław Puton for valuable discussions about induced current and we also thank David Manura for his help on many questions related to SIMION implementation of IMS. We thank Wangsheng Su for collecting experimental data at MITRE. We also thank Prof. Herbert H. Hill, Jr. and his team at the Washington State University for collaboration on IMS experiments and related discussions. This technical data was produced for the U. S. Government under Contract No. W15P7T-13-C-A802, and is subject to the Rights in Technical Data-Noncommercial Items clause at DFARS 252.227-7013 (FEB 2012). Distribution Statement A: Approved for Public Release, Distribution Unlimited, Case No. 15-0813.
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Mariano, A.V., Guharay, S.K. A comparison of SIMION and LORENTZ for IMS simulation. Int. J. Ion Mobil. Spec. 18, 117–128 (2015). https://doi.org/10.1007/s12127-015-0180-1
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DOI: https://doi.org/10.1007/s12127-015-0180-1