A TPC-based tracking system for a future Belle II upgrade

TL;DR

This paper proposes a conceptual design for a high-performance TPC-based tracking system for future collider experiments, addressing challenges of high event rates and background while ensuring precise tracking.

Contribution

It introduces a novel TPC-based tracking system design with expanded silicon vertex detector and fast timing layer for next-generation experiments.

Findings

System simulation shows suitability for future collider luminosities

Design addresses high background and event rate challenges

Performance benchmarks indicate high tracking accuracy

Abstract

In the next decade, intensity frontier experiments will require tracking systems that are robust against high event and background rates while maintaining excellent tracking performance. We develop a first conceptual design of a tracking system for a hypothetical future experiment--here imagined as a successor to Belle II--built around a time projection chamber (TPC) with high resolution readout. This choice necessitates a significant expansion of the silicon vertex detector as well as a new fast timing layer. We simulate the performance of such a system in the Belle II simulation framework, probe its major technical challenges, and demonstrate that such a system is suitable for projected luminosities at the next generation of intensity-frontier colliders.