Measurement of the drift field in the ARGONTUBE LAr TPC with 266~nm pulsed laser beams
arXiv:1408.6635 · doi:10.1088/1748-0221/9/11/P11010
Abstract
ARGONTUBE is a liquid argon time projection chamber (LAr TPC) with a drift field generated in-situ by a Greinacher voltage multiplier circuit. We present results on the measurement of the drift-field distribution inside ARGONTUBE using straight ionization tracks generated by an intense UV laser beam. Our analysis is based on a simplified model of the charging of a multi-stage Greinacher circuit to describe the voltages on the field cage rings.