Measurements of timing resolution of ultra-fast silicon detectors with the SAMPIC waveform digitizer

Understand

The SAMpler for PICosecond time (SAMPIC) chip has been designed by a collaboration including CEA/IRFU/SEDI, Saclay and CNRS/LAL/SERDI, Orsay.

• It benefits from both the quick response of a time to digital converter and the versatility of a waveform digitizer to perform accurate timing measurements.
• Thanks to the sampled signals, smart algorithms making best use of the pulse shape can be used to improve time resolution.
• A software framework has been developed to analyse the SAMPIC output data and extract timing information by using either a constant fraction discriminator or a fast cross-correlation algorithm.