Position Determination and Resolution of Position Sensitive Neutron Detectors Limited by Charge Equalization and Noise

The conventional design of detector electronics for resistive-wire position sensitive neutron detectors (PSD) using charge sensitive preamplifiers and gauss-pulse shaping devices causes uncertainty in spatial position and resolution due to charge equalization between both ends of the resistive PSD. Errors introduced by charge equalization may be in excess of limitations given by noise, linearity, dynamic range or EMI. This paper describes in detail charge equalization effects and their drawbacks for a PSD system design. Error estimations for a conventional detector design are given. Attained results should help to better understand PSD electronics design and to provide data for system optimization.