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#Lecroy wavesurfer 42xs portable
Ion traps in particular are a promising choice for making a portable MS. Efforts have been made to miniaturize several different types of mass analyzers including time-of-flight (TOF), magnetic sector, quadrupole mass filter, and ion trap. To be portable, a MS requires some combination of smaller physical dimensions or weight and lower power consumption.
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In contrast to routine use of MS in the laboratory setting, portable MS is able to broaden applications and benefit areas in which samples are less conveniently brought into the lab. Mass spectrometers (MS) are among the most widely used instruments for identifying unknown compounds or analyzing samples at trace amounts the method is both informative and sensitive. Implications of these results for miniaturized ion traps are discussed. Varying the DC (axial) trapping potential can elucidate the effects where more misalignments in more than one DOF affect performance. The effects of plate spacing (y-displacement) on both resolving power and ion ejection efficiency are attributable to higher-order terms in the trapping field. Lateral displacement (x) and yaw (rotation of one plate, but plates remain parallel) both have a strong impact on ion ejection efficiency, but little effect on resolving power. Pitch, or the degree to which the plates are parallel along the axial direction, has the largest and sharpest impact to resolving power, with resolving power dropping noticeably with pitch misalignment of a fraction of a degree. A comparison between the experiment and previous simulations shows reasonable agreement. High-precision motorized actuators were used to vary the alignment between the two ion trap plates in five DOFs-x, y, z, pitch, and yaw. Alignment of plates in a two-plate planar LIT is ideal to characterize misalignment effects, as it represents the simplest possible case, having only six degrees of freedom (DOF) (three translational and three rotational). The performance of miniaturized ion trap mass analyzers is limited, in part, by the accuracy with which electrodes can be fabricated and positioned relative to each other.