title: Accelerated simulation study of space charge effects in quadrupole ion traps using GPU techniques.
abstract: Space charge effects play important roles in the performance of various types of mass analyzers. Simulation of space charge effects is often limited by the computation capability. In this study, we evaluate the method of using graphics processing unit (GPU) to accelerate ion trajectory simulation. Simulation using GPU has been compared with multi-core central processing unit (CPU), and an acceleration of about 390 times have been obtained using a single computer for simulation of up to 10(5) ions in quadrupole ion traps. Characteristics of trapped ions can be investigated at detailed levels within a reasonable simulation time. Space charge effects on the trapping capacities of linear and 3D ion traps, ion cloud shapes, ion motion frequency shift, mass spectrum peak coalescence effects between two ion clouds of close m/z are studied with the ion trajectory simulation using GPU.
authors.affiliation: School of Life Science, Beijing Institute of Technology, China.
authors.forename: Xingchuang
authors.initials: X
authors.lastname: Xiong
authors.forename: Wei
authors.initials: W
authors.lastname: Xu
authors.forename: Xiang
authors.initials: X
authors.lastname: Fang
authors.forename: Yulin
authors.initials: Y
authors.lastname: Deng
authors.forename: Zheng
authors.initials: Z
authors.lastname: Ouyang
mesh_terms: D003196:Computer Graphics; D003198:Computer Simulation; D006371:Helium / Q000737:chemistry; D007477:Ions / Q000737:chemistry; D013058:Mass Spectrometry / Q000295:instrumentation*
chemical_list: D007477:Ions; D006371:Helium