CAJ | 학술논문

高温是随钻自然伽马仪器面临的挑战，需要合理的温度补偿方法。总量伽马探管的核心处理单元是单道分析器。常用的补偿方法是根据温度变化实时调整光电倍增管的高压，但引起光电倍增管暗电流和噪声增强、信噪比下降等问题。因此，提出阈值控制的温度补偿方法，并设计相应的电路。20℃和150℃下的测试数据通过T检验，证明温度补偿效果良好。
고온시수찬자연가마의기면림적도전，수요합리적온도보상방법。총량가마탐관적핵심처리단원시단도분석기。상용적보상방법시근거온도변화실시조정광전배증관적고압，단인기광전배증관암전류화조성증강、신조비하강등문제。인차，제출역치공제적온도보상방법，병설계상응적전로。20℃화150℃하적측시수거통과T검험，증명온도보상효과량호。
Gamma Logging Tools work at a hot environment.Reasonable temperature compensation method is re-quired.Central processing unit of the total gamma probe is a single-channel analyzer.The usual method is to adjust the voltage of the photomultiplier tube according the temperature.But this method will enhance the dark current and noise of the photomultiplier, then SNR decreases.Therefore, a new temperature compensation method based on threshold control is proposed and appropriate circuits are designed.The test data at 20℃and 150 ℃pass T-test.The experiment proves that the method is good for the temperature compensation.