Abstract by Radhya Weligama Gamage

Personal Infomation

Presenter's Name

Radhya Weligama Gamage

Degree Level



Daniel Austin

Abstract Infomation


Chemistry and Biochemistry

Faculty Advisor

Daniel Austin


The effects of electrode misalignment on the performance of a linear wire ion trap


The linear wire ion trap (LWIT) is a miniaturized device intended for in-field applications. Given the nature of these applications, it is critical for the LWIT to be robust in the face of falls and jerks that could misalign its electrodes. This study is aimed at evaluating the effects of electrode misalignments of the LWIT to understand the degree of misalignment it can withstand without resulting in significant changes to the electric field. Three types of misalignments capturing all of the LWIT's degrees of freedom were identified - shear, tilt, and twist. These misalignments were simulated using the ion trajectory simulation software SIMION. The effects of misalignments are quantified in terms of the changes to the multipole coefficients of the electric field. The variation of the multipole coefficients octopole and dodecapole were negligibly small within a 30 angle of misalignment according to simulations. The effects of the LWIT misalignments were compared to those in other traps and the LWIT was less susceptible to misalignments by comparison. Therefore, we expect that the effect on performance parameters such as mass resolution would also be minimal.