Momentum Resolution Studies for a large TPC-Based Central Tracker

TL;DR

This study evaluates the momentum resolution of a TPC-based central tracker for a proposed linear collider, suggesting it could reach 10^{-4} (GeV/c)^{-1} with potential enhancements like silicon microstrip detectors.

Contribution

It provides a detailed analysis of the momentum resolution capabilities of a TPC-based tracker for a future collider, including potential improvements.

Findings

Achievable momentum resolution of approximately 10^{-4} (GeV/c)^{-1}.

Adding silicon microstrip detectors could enhance resolution.

Supports the inclusion of the tracker design in the collider's conceptual report.

Abstract

This note describes a study on the momentum resolution of the TPC-based central tracker design which will be included in the ECFA/DESY conceptual design report (CDR) for the proposed DESY 500 GeV electron-positron linear collider. The study found it to be likely that the central tracker could achieve a momentum resolution of approximately 10^{-4} (GeV/c)^{-1}, particularly if a layer of silicon microstrip detectors were to be added just inside the TPC.