The spatial resolution measurements of the Super charm-tau factory drift chamber small prototype

The Budker Institute of Nuclear Physics is actively developing the Super charm-tau factory (SCTF) project, which is a mega-science class installation, that will be used to study rare c-quark and tau-lepton decays. The main part of a SCTF detector is a drift chamber, based on which the track reconstruction of charged particles is carried out. Accuracy of the trajectory reconstruction, i.e. a spatial resolution, is one of the main characteristics of the detector. This work is devoted to the experimental measurement of the spatial resolution on a drift chamber small prototype. The wire structure of the prototype consists of seven hexagonal cells that reproduce the cell of the first detector layer. The setup was calibrated during cosmic particles track reconstructions. In the work, the resolution of (97 ± 6) µm was obtained, and this demonstrates the possibility of obtaining the design parameters of the drift chamber based on the proposed wire structure. The results of this study were presented at the «Super c-tau factory» summer scientific school in Sarov in 2022.