Speaker
Description
Low Gain Avalanche Detectors (LGADs) are silicon detectors with modest internal gain (up to ~50) that allows the sensor to be very thin (20-50 um). LGADs are characterized by an extremely good time resolution (down to 17ps), a fast rise time (~500ps) and a very high repetition rate (~1ns full charge collection). These devices are relatively new but will be perfect candidates in a number of application in the future thanks to their proprieties. The first application will be with the ATLAS and CMS timing layers at the LHC where they will be utilized to mitigate the high pileup environment of High Luminosity LHC (HL-LHC) thanks to the extraordinary time resolution.
A current challenge is to produce LGADs with sufficient radiation hardness to withstand fluences up to 3E15 Neq/cm2 which is the level required for the HL-LHC environment. We’ll report on the results of a radiation campaign with neutrons and protons up to a fluence of 3E15 Neq/cm2 of LGAD sensors produced by HPK and FBK.
