TIME OF FLIGHT CORRECTION FOR DETECTOR THICKNESS IN THE MTR FAST CHOPPER TIME ANALYZER

摘要

In order to increase the probability of detecting the neutrons from the MTR: Fast Chopper, five detector banks have been placed together along the neutron flight path* An automatic time correction is desirable for this arrangement to correct the nbminal time of arrival of neutrons in any of these detector banks to a time corresponding to one point' in the flight path. This corrects for the transit time of the neutrons across the five detector banks. Continuously varying corrections are necessary since the correction for a given counter spacing changes as a function of the flight time.nThis, system consists of one fixed and four variable delay channels, each channel corresponding to one-of the detector banks.- Each variable delay channel produces a linearly changing voltage with time.