A method for determination of gamma-ray direction in space

TL;DR

This paper presents a simulation-based method using a three-detector NaI(Tl) array to determine gamma-ray directions in space with 10-degree accuracy, aiding in understanding gamma-ray burst origins.

Contribution

Developed a novel detection method with a three-detector array and demonstrated its effectiveness through Geant simulations for gamma-ray direction identification.

Findings

Achieved 10-degree accuracy in gamma-ray direction determination.

Demonstrated the array's capability to scan three-dimensional space.

Potential applications in various gamma-ray detection fields.

Abstract

Gamma-ray bursts (GRBs) are short and most intense bursts of gamma-rays that come from random direction in space. Their origin are still unknown and they originate likely from cosmological distances, probably after birth of a new black hole or death of a giant star. In this work, Geant simulations of a detector array whose aim is to identify gamma-ray directions in space were performed and a method for this identification was developed. The array consists of three quadratic NaI(Tl) scintillators which are facing different directions and the method is based on the difference of the counts registered in these three detectors. By using the method the gamma-ray directions are obtained with 10o accuracy. This form of the array which can scan three dimensions in space is crucial to pinpoint origin of the GRBs. The array would also be applicable in various fields where identifications of the gamma-ray directions are necessary.