Measurement of the drift field in the ARGONTUBE LAr TPC with 266 nm pulsed laser beams

Ereditato, Antonio; Göldi, Damian; Janos, Stefan; Kreslo, Igor; Lüthi, Matthias; Rudolf von Rohr, Christoph; Schenk, Michael; Strauss, Thomas; Weber, Michael; Zeller, Marcel (2014). Measurement of the drift field in the ARGONTUBE LAr TPC with 266 nm pulsed laser beams. Journal of instrumentation, 9(11), P11010. Institute of Physics Publishing IOP 10.1088/1748-0221/9/11/P11010

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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.

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