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This simulation study sheds light on effectiveness of a magnetic shield onnon-adiabatic transport of a positron beam from 3700G to 100G where we wereable to maximize the low to high field transmission efficiency for 6.5KeVpositrons. An initially brighter beam can be transported even more efficiently.Cross-sectional uniformity of the beam is also studied for different beamenergies. This is important for filling microtraps consist of thousands tubeswith diameters of tens of microns each. Transverse momentum of the particles isalso studied since it causes mirroring in the high field and compromisesefficiency. Beam remoderation is required as ~eV energy positrons will betrapped in the Microtrap. The observed magnetic shield assisted low to highfiled transition opens new avenue for high efficiency manipulating ofnon-neutral beams.

Magnetic Shield Approach Toward Non-adiabatic Low to High Field Positron Beam Transition for Microtraps