Implementation of ACTS for STCF track reconstruction

TL;DR

This paper demonstrates the implementation and performance of the ACTS tracking software for the STCF collider, enabling efficient reconstruction of charged particles, including low transverse momentum tracks, using a drift chamber and inner tracker.

Contribution

It presents the first application of ACTS for a drift chamber, detailing implementation and performance in the context of STCF's tracking system.

Findings

High efficiency in charged particle reconstruction achieved.

Excellent momentum resolution for low transverse momentum tracks.

Successful integration of ACTS with drift chamber data.

Abstract

With an electron-positron collider operating at center-of-mass-energy 2-7 GeV and a peak luminosity above $0.5\times10^{35} cm^{-2} s^{-1}$, the STCF physics program will provide an unique platform for in-depth studies of hadron structure and non-perturbative strong interaction as well as probing new physics beyond the Standard Model in the $\tau$-Charm sector, succeeding the present Beijing Electron-Positron Collider. To fulfill the physics targets and further maximize the physics potential at STCF, the STCF tracking software should have capability to reconstruct charged particles with high efficiency and excellent momentum resolution, especially for the charged particles with low transverse momentum down to 50 MeV. A Common Tracking Software (ACTS) providing a set of detector-independent tracking algorithms is adopted for reconstructing charged tracks with the information of two sub-detectors, a $\mu$RWELL-based inner tracker and a drift chamber, at STCF. This is the first demonstration of ACTS for a drift chamber. The implementation details and performance of track reconstruction are presented.