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Abstract: It has long been recognized that precision timing in particle and nuclear physics opens new directions in physics. Going back to the earliest experiments in particle physics timing in detectors has been used to measure time-of-flight, for particle identification and for precision positions measurements. Forty years ago the state-of-the art was 250 picosecond timing, A major step in precision timing has been prompted by the high multiplicity of nearly simultaneous events at the CERN High-Luminosity LHC with the development large-area low-gain avalanche silicon sensors (LGADs) and ones based on crystals. To move from where we are now to an even more precise level of timing measurement there are many technological challenges. In my talk I shall review past experience and discuss ideas on how to achieve timing precision in a large-scale detectors of the order of a picosecond.
About Speaker:
Prof Rusack graduated (or received his PhD) from Imperial College, London, UK and has worked in experimental high energy physics on experiments at the CERN ISR, SPS and the LHC colliders and multiple experiments at Fermilab in the USA. Highlights of his career include the first observation of tau-neutrino interactions and the Higgs boson and multiple experiments to test the standard model of particle physics. He is also an expert on the technology of particle physics detectors and most recently he has been one of the designers of the new high-granularity calorimeter with 600 m2 of silicon detectors now under construction for the High-Luminosity LHC at CERN. His current research interests include the problem of how to distribute reference clocks with a precision of less than a picosecond.
ASET