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Picosecond Timing Layers for Future Calorimeters: Updates from the Askaryan Calorimeter Experiment (ACE)

Mar 19, 2021, 1:20 PM
Calorimetry Calorimetry


Remy Prechelt (University of Hawai'i - High Energy Physics Group)


We report on new results and simulations from the Askaryan Calorimeter Experiment (ACE) which uses the coherent microwave Cherenkov emission from high energy particle showers in dielectric-loaded waveguides as calorimetric timing layers with ~1 ps resolution. Above ACE's energy threshold, a single 5 cm thick (1.4 $X_0$) layer of ACE waveguides would provide ~1 ps timing resolution, 3D spatial constraints on the scale of ~300 $\mu$m - 5 mm, and an additional energy measurement, making ACE a true 5D detector. When embedded inside another calorimeter technology, ACE timing layers could provide a powerful additional measurement for particle-flow reconstruction algorithms as well as unique vertexing capabilities to significantly reduce pileup. Due to thermal noise limits, ACE elements have a relatively high energy threshold so they are currently limited to future high CoM colliders like the proposed 100 TeV FCC-hh. We report on new simulation results from deploying ACE timing layers in the barrel and forward calorimeters at a future 100 TeV CoM collider and discuss ongoing research to further develop and improve the ACE detector concept.

Primary author

Remy Prechelt (University of Hawai'i - High Energy Physics Group)


Peter Gorham (Department of Physics and Astronomy, University of Hawaii at Manoa)

Presentation materials