Speaker
Description
There are many sources of position dependent variation of the intrinsic gain of a single gap RPC, e.g., variation of thickness of glass, button and spacer, different composition of gas due to improper flow of gas, leakage etc. One of the dominant component of the time resolution of a large area single gap RPC is this position dependent gain. Also there is a variation of timing information as a function of strip multiplicity as well as lateral position of the trajectory in RPC strip coordinate. This paper describes the technique of offline time correction to achieve the time resolution better than a ns. This technique is validated using a large cosmic ray data collected in twelve 1m×1m RPC stack at TIFR. This paper also mentioned few alternate solutions to improve the time resolution during the operational phase of INO-ICAL experiment. All these are not only valid for the INO, but valid for any experiment with the large RPC detector.
