| 摘要 |
PURPOSE:To reduce stray capacitance between cables without affecting the detection signal and improve the resistance to noise in wide frequency range. CONSTITUTION:In a radiation measuring system for measuring radiation dose by sending the detection signal with a radiation detector detecting radiation through a cable to a preamplifier, provided are an annular magnetic core 25 wound with plural turns number of cables so as to eliminate noise mixing in the cable 5 and arranged between the preamplifier and the radiation detector and cable arrangement parts 27, 28 to arrange the cable 5 apart from each other so as to reduce the stray capacitance between the adjacent cables 5 wound around the annular magnetic core 25.
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