Measurement of the drift field in the ARGONTUBE LAr TPC with 266~nm pulsed laser beams
A. Ereditato, D. Goeldi, S. Janos, I. Kreslo, M.Luethi, C. Rudolf von, Rohr, M. Schenk, T. Strauss, M. S. Weber, M. Zeller
TL;DR
This paper reports on measuring the drift field inside the ARGONTUBE liquid argon TPC using UV laser-generated ionization tracks, employing a simplified Greinacher circuit model to analyze the voltage distribution.
Contribution
It introduces a method to measure the drift field in ARGONTUBE with laser tracks and models the Greinacher circuit's charging behavior for accurate field characterization.
Findings
Successful measurement of the drift field distribution.
Validation of the simplified Greinacher circuit model.
Enhanced understanding of the electric field in ARGONTUBE.
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.
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