Design of a Gas Monitoring Chamber for High Pressure Applications

Gaseous detectors have long been used by particle physics experiments at beamlines or standalone experiments. Recently, their low momentum threshold has made them interesting as active targets for long baseline neutrino experiments. To increase statistics, but retain a low momentum threshold, pressurized Time Projection Chambers have been proposed. The Deep Underground Neutrino Experiment considers building one as part of their near detector complex. Gas Monitoring Chambers are mini TPCs that are designed to measure gas properties. Such a system with the capability of testing common and new drift gas mixtures can provide input to the design process of new high pressure TPCs. This work presents the construction of such a High Pressure Gas Monitoring Chamber capable of operation up to \unit[10]{bar} pressure and a maximum drift field close to \unit[1000]{V/cm}.