Study of ionization signals in a TPC filled with a mixture of liquid Argon and Nitrogen

TL;DR

This study investigates ionization signals in a liquid Argon/Nitrogen TPC caused by cosmic rays and electrons, aiming to assess its potential for gamma-ray detection in security and medical fields.

Contribution

It provides experimental evidence of ionization signals in a liquid Argon/Nitrogen TPC, exploring its suitability for gamma-ray detection applications.

Findings

Detected ionization signals from cosmic rays and electrons in the TPC.

Demonstrated potential for gamma-ray detection using Argon/Nitrogen mixtures.

Supported the feasibility of liquid Argon/Nitrogen TPCs for security and medical use.

Abstract

In this paper we report on the evidence for ionization track signals from cosmic ray muons and Compton electrons in a Time Projection Chamber (TPC) filled with liquid Argon and doped with different fractions of Nitrogen. This study has been conducted in view of the possible use of liquid Argon/Nitrogen TPCs for the detection of gamma rays in the resonant band of the Nitrogen absorbtion spectrum, a promising technology for security and medical applications.