Abstract
The detection of neutrons with precise timing, in the orders of a few tens of ps, has several scientific applications, for example in the measurement of the fast neutron flux in space. We illustrate the response of two different sensors, based on Low Gain Avalanche Detector (LGAD) technology, to fast neutrons generated by a Deuterium-Tritium (DT) source. The sensors were designed and fabricated at the Brookhaven National Laboratory with different geometries, doping profiles and substrate thicknesses. LGAD sensors are expected to provide good timing resolution, thanks to a combination of high signal-to-noise ratio and short rise time. Preliminary results from the two types of LGADs are compared.
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