Abstract
The Circular Electron Positron Collider (CEPC) has been proposed as a Higgs/[Formula: see text] factory, which would allow precision measurements of the Higgs boson properties, as well as of [Formula: see text] and [Formula: see text] bosons. The baseline design of CEPC tracking system consists of a vertex detector with three concentric double-sided pixel layers, a high precision (about 100 [Formula: see text]m) large volume time projection chamber (TPC) and a silicon tracker on both barrel and end-cap regions. The tracking system has similar performance requirements to the ILD detector in ILC detectors but without power-pulsing, which leads to significantly additional constrains on detector specifications, especially for the case of machine operating at [Formula: see text]-pole energy region with high luminosity. In this paper, we will give an overview of the CEPC TPC detector, the requirements and challenges for the detector with possible technologies. The on-going R&D activities of the TPC detector module and prototype will also be reported.
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