Abstract: A straight-line track model is developed, and validity of Kalman filter track reconstruction algorithm with the track model was verified in detail. It shows that given sufficient hits track parameters converge to true values. The track reconstruction program is implemented in MarlinTPC reconstruction framework in practice. By choosing track reeonstruction parameters reasonably, the program discriminates noise efficiently and reconstructs tracks. The algorithm is valuable in track reconstruction of large prototypes.

Key words: time projection chamber, track reconstruction, Kalman filter, track model