Design and production of the high voltage electrode grids and electron extraction region for the LZ dual-phase xenon time projection chamber

Abstract

The dual-phase xenon time projection chamber (TPC) is a powerful tool for direct-detection experiments searching for WIMP dark matter, other dark matter models, and neutrinoless double-beta decay. Successful operation of such a TPC is critically dependent on the ability to hold high electric fields in the bulk liquid, across the liquid surface, and in the gas. Careful design and construction of the electrodes used to establish these fields is therefore required. We present the design and production of the LUX-ZEPLIN (LZ) experiment's high-voltage electrodes, a set of four woven mesh wire grids. Grid design drivers are discussed, with emphasis placed on design of the electron extraction region. We follow this with a description of the grid production process and a discussion of steps taken to validate the LZ grids prior to integration into the TPC.

23 pages, 20 figures, to be submitted to Nuclear Instruments and Methods in Physics Research Section A. Corresponding authors: [email protected] and [email protected]

References in corpus (7)

• Liquid noble gas detectors for low energy particle physics
• The LUX-ZEPLIN (LZ) Experiment
• The ZEPLIN-III dark matter detector: instrument design, manufacture and commissioning
• Measurement of the Drift Velocity and Transverse Diffusion of Electrons in Liquid Xenon with the EXO-200 Detector
• Electron extraction efficiency study for dual-phase xenon dark matter experiments
• High Voltage in Noble Liquids for High Energy Physics
• Removal of long-lived ${}^{222}$Rn daughters by electropolishing thin layers of stainless steel

Cited by in corpus (1)

• Detecting Low-Energy Interactions and the Effects of Energy Accumulation in Materials