2n Position resolution

FFT application

Experimental distribution of TDC difference time spectrum (blue) and ideal response function (red) are shown below:

Raw data of FFT deconvolution of signal function and response function is presented below:

It can be seen the high frequency noise component in the raw data. Applying low pass filtering we could get the deconvoluted data:

Hence, any coordinate of the neutron hit has the following uncertainty in: sigma = 2.8 ns and its value converted into cm is 2.8 ns x 7.41 cm/ns = 20.7 cm. The total length of the active area of the neutron detector is 75 cm.