Time Projection Chamber as Inner Tracker for Super Charm-Tau Factory at BINP

TL;DR

This paper explores the use of a Time Projection Chamber as an inner tracker for a high-luminosity Super Charm-Tau Factory, focusing on simulation studies of transport properties and ion back flow effects.

Contribution

It presents Monte-Carlo simulation results for TPC gas mixtures and analyzes ion back flow impacts on spatial resolution in the context of a new collider detector.

Findings

Optimal gas mixtures identified for TPC operation.

Ion back flow significantly affects spatial resolution.

Simulation results inform detector design choices.

Abstract

At present time Budker INP is developing a Super Charm-Tau factory project, which consists of a high-luminosity collider with the luminosity of $10^{35}$,cm$^{-2}$s$^{-1}$ and a universal magnetic detector. The tracking system of the detector will comprise of an Inner Tracker (IT) and a Drift Chamber (DC). One of the options for IT is Time Projection Chamber (TPC). The advantages of the TPC are high spatial resolution and particle identification capabilities by registration of dE/dx losses. However, using a Time Projection Chamber implies serious challenges. For example, the TPC have to simultaneously deal with tracks from several thousands events and maintain the enormous data rate. This work describes the results of the Monte-Carlo studies of the transport characteristics in various gas mixtures proposed for TPC. Besides of this, the simulation of the ion back flow and its effect on spatial resolution will be reported.