Jul 22 – 27, 2018
MacMillian
US/Eastern timezone

Production and high voltage testing of the LZ detector grids

Jul 24, 2018, 5:30 PM
20m
117 (MacMillian)

117

MacMillian

Brown University Providence, Rhode Island, USA
Talk Direct Detection 2.5 Direct Detection

Speaker

RACHEL MANNINO (University of Wisconsin-Madison)

Description

The LZ (LUX-ZEPLIN) dark matter search experiment is a liquid xenon time projection chamber (TPC) with a 7 tonne active xenon volume currently under construction. Four wire mesh grids of 1.5 m diameter establish electric fields in the detector to drift ionization electrons across the volume and extract them from the liquid surface. This presentation will discuss the design, construction, surface treatment, mitigation of radon exposure, and high voltage performance of the LZ grids. The high voltage testing characterizes the electron and photon emission rates of the grids at high electric fields. Three detectors contribute to the high voltage testing program including a small-scale gaseous xenon detector, a small-scale liquid xenon TPC detector to study electron extraction, and a large gaseous xenon detector to test the final LZ grids.

Primary author

RACHEL MANNINO (University of Wisconsin-Madison)

Presentation materials