Measurement of neutron-induced SET pulse width using propagation-induced pulse shrinking

We propose a single event transient (SET) pulse width measurement circuit using propagation-induced pulse shrinking on a clock buffer chain. It achieves the resolution of less than 1ps since the target circuit of the buffer chain is directly connected to the pulse capture FFs. Experimental results using the spallation neutron beam accelerated test show SET pulse widths are exponentially-distributed and number of SETs longer than 350 ps are reduced to 9% by inserting tap-cells closely. The SET rate on the clock buffer is 23x smaller than SEU rate on FFs.