Silicon tracker array for RIB experiments at SAMURAI

TL;DR

This paper presents a silicon tracker array designed for precise angular and atomic number measurements of heavy ions and protons in RIB experiments at SAMURAI, aiding nuclear astrophysics research.

Contribution

It introduces a novel silicon tracker system optimized for RIB experiments at SAMURAI, with detailed technical specifications and performance evaluation.

Findings

Successful angular reconstruction demonstrated in pilot experiments

Effective atomic number identification achieved

System meets the requirements for nuclear astrophysics studies

Abstract

This work describes a silicon tracker system developed for experiments with proton-rich radioactive ion beams at the SAMURAI superconducting spectrometer of RIBF at RIKEN. The system is designed for accurate angular reconstruction and atomic number identification of relativistic heavy ions and protons which are simultaneously produced in reactions motivated by studies of proton capture reactions of interest for nuclear astrophysics. The technical characteristics of the tracking array are described in detail as are its performance in two pilot experiments. The physics justification for such a system is also presented.