Radiation DetectorsCIRCUITRY AND CIRCUIT ELEMENTSCIRCUITRY AND CIRCUIT ELEMENTSUnderstanding how the reactor power monitoring detection equipment worksrequires a working knowledge of basic terminology.EO 3.1 DEFINE the following terms:a. Signal-to-noise ratiob. Discriminatorc. Analogd. Logarithme. Periodf. Decades per minute (DPM)g. ScalarEO 3.2 LIST the type of detector used in each of the followingnuclear instruments:a. Source rangeb. Intermediate rangec. Power rangeTerminologyUnderstanding how the reactor power monitoring detection equipment works requires a workingknowledge of basic terminology.Signal-to-NoiseRatioSignal-to-noise ratio is the ratio of the electrical output signal to the electrical noisegenerated in the cable run or in the instrumentation.DiscriminatorDiscrimination in radiation detection circuits refers to the process of distinguishingbetween different types of radiation on the basis of pulse height. A discriminator circuitselects the minimum or maximum pulse height that is to be counted.Rev. 0 Page 55 IC-06
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