PowerPoint Presentation - TOF/T0 Status

Frank L. H. Wolfs

Department of Physics and Astronomy, University of Rochester

TOF/T0 Status

•T0 time-delay calibrations:

•Procedure has been developed and implemented.

•Calibration parameters are determined on a sequence by sequence basis.

•Procedure is as follows:

•Determine the relative position of the 300 ns time calibrator peaks and the prompt T0 peaks.

•The time-delay parameters are adjusted for any observed shift in the time calibrator peak.

•This procedure is repeated for each sequence and the calibration data are stored in the DB on a sequence by sequence basis.

•The biggest assumptions made are:

•The relative position between time calibrator and prompt time signals remains fixed (e.g. sensitive to stability of crossing clock).

•The TDC gains remain constant (we can determine the gain by using the time calibrator peak at 260 ns).