A method to suppress dielectric breakdowns in liquid argon ionization detectors for cathode to ground distances of several millimeters

TL;DR

This paper introduces a technique to prevent dielectric breakdowns in liquid argon ionization detectors, enabling higher electric fields over short distances by suppressing cathode field emission.

Contribution

The paper proposes a novel method to suppress cathode field emission, allowing for higher electric fields in liquid argon detectors compared to previous limitations.

Findings

Achieved electric fields up to 400 kV/cm in liquid argon.

Suppressed cathode field emission effectively.

Overcame previous limitations on electric field strength.

Abstract

We present a method to reach electric field intensity as high as 400 kV/cm in liquid argon for cathode-ground distances of several millimeters. This can be achieved by suppressing field emission from the cathode, overcoming limitations that we reported earlier.