Category Archives: WAS INTENTIONALLY LEFT BLANK

MATHEMATICAL DERIVATIONS

Consider the system shown in Figure 3-1. It consists of four components: a detector, an amplifier, a squaring circuit, and an averaging (or integrating) circuit of time-constant T. The detector and amplifier are linear, and somewhere in the system before the squaring circuit (i. e., in the linear part of the system) there is a component to remove the d-c, […]

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CABLE

This section is concerned with the transmission of information from a detector (ionization or fission chamber) inside a reactor vessel to the electronic equipment outside the vessel. At the present time, coaxial cable is used for this purpose; hence, the transmission of information through a coaxial cable is considered. Three modes of information transmission are studied:

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EXPERIMENTAL RESULTS

The experimental results of system linearity for an in-core and out-of-core fission chamber are shown in Figures 7-1 and 7-2, respectively. In both cases, the system exhibits ±5 percent linearity over about 5. 5 decades. For the in-core detector, there is no noticeable roll-off at the maximum flux tested so it is very possible that its range can be extended. […]

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