Superconducting Cloud Chamber

TL;DR

The paper introduces a superconducting cloud chamber using Josephson junctions to detect slow-moving charged particles and millicharged dark matter with high sensitivity, offering a novel detection method.

Contribution

It presents a new particle-trajectory detector based on Josephson junctions that can detect low-energy charged particles and dark matter within a broad mass range.

Findings

Detects charged particles with extremely low kinetic energy.

Capable of identifying millicharged dark matter particles.

Provides a new approach for particle detection using superconducting technology.

Abstract

We propose a new particle-trajectory detector composed of Josephson junctions, named the superconducting cloud chamber. By measuring the quantum phase difference, this device can detect charged particles with extremely low kinetic energy, providing a new method for detecting slow-moving particles. It can also be utilized to detect millicharged dark matter particles thermalized with the Earth's environment within the mass range of $10^3\sim 10^{10}\,$GeV.