Reconstruction of nuclear charged fragment trajectories from a large gap sweeper magnet

TL;DR

This paper introduces a new trajectory reconstruction method for nuclear charged fragments using measurements behind a large gap sweeper magnet, significantly enhancing energy and angle resolution in experiments with fast rare isotopes.

Contribution

The paper presents a novel reconstruction technique that incorporates target position data to improve resolution in nuclear fragment experiments with large-gap magnets.

Findings

Enhanced energy resolution for fast rare isotope experiments.

Improved angular resolution in fragment trajectory reconstruction.

Effective handling of large beam sizes at the target.

Abstract

A new method to reconstruct charged fragment four-momentum vectors from measured trajectories behind an open, large gap, magnetic dispersion element (a sweeper magnet) has been developed. In addition to the position and angle behind the magnet it includes the position measurement in the dispersive direction at the target. The method improves the energy and angle resolution of the reconstruction significantly for experiments with fast rare isotopes, where the beam size at the target position is large.