Laser calibration system for the CERES Time Projection Chamber

Understand

A Nd:YAG laser was used to simulate charged particle tracks at known positions in the CERES Time Projection Chamber at the CERN SPS.

• The system was primarily developed to study the response of the readout electronics and to calibrate the electron drift velocity.
• Further applications were the determination of the gating grid transparency, the chamber position calibration, and long-term monitoring of drift properties of the gas in the detector.