Development of the Calibrator of Reactivity Meter Using PC-Based DAQ System

The reactivity meter calibrator has been developed by applying the PC-Based DAQ System programmed using LabVIEW. The Output of the calibrator is voltage proportional to neutron density n(t) corresponding to the step reactivity change ρ0. The "Kalibrator meter reactivitas.vi" program calculates seven roots and coefficients of solution n(t) of Reactor Kinetic equation using the in-hour equation. Based on data of dt = tk+1 - tk and t0 = 0 input by user, the program approximates n(t) for each time interval tk ≤ t < tk+1, where k = 0, 1, 2, 3, .... by a step function n(t) = n0 ∑j=17 Ajeωjtk. Then the program commands the DAQ device to output voltage V(t) = n(t) Volt at time t. The measurement of standard reactivity with the meter reactivity showed that the maximum deviation of measured reactivity from its standard were less than 1 %. (author)