| 摘要 |
PURPOSE: To obtain a radiation measuring system in which photoelectric conversion circuits whose number corresponds to the number of scintillator detectors are not required so as to be made low-cost, which can reduce the time and labor of calibration operation and which can ensure the continuity of measurement. CONSTITUTION: A radiation measuring system comprises a measuring system in which respective optical delay lines 19a1 to 19bs delay respective beams of light so as to be given to photoelectric conversion circuits 13a, 13b at mutually different timings and in which respective delay circuits 16a1 to 16b2 delay outputs of the photoelectric conversion circuits so as to be given to simultaneous counting circuits 17a, 17b at an identical timing. In addition, the radiation measuring system is provided with a plurality of optical fibers 14, for calibration, by which respective scintillator detectors 11a, 11b can be connected individually and by which the beams of light to be outputted from the connected scintillator detectors are transmitted individually and with a plurality of optical delay lines 19, for calibration, by which the beams of light to be transmitted by the respective optical fibers for calibration are delayed individually so as to be sent out to the photoelectric conversion circuits.
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