Study On The Spectral Response Performance Of Optoelectronic Device

The Jiangmen Underground Neutrino Observatory(JUNO)is a large-scale scientific experiment for measuring the third oscillation mode of neutrinos and the neutrino mass order.20,000 large-area bi-alkali photocathode photomultiplier tubes(PMT)will be used in the core detector of JUNO.In order to ensure the accuracy of the experiment,it is necessary to carry out position calibration experiments on 20,000 photomultiplier tubes.However,the result of position calibration experiment showed that the PMT have "red storm effect"to the light of 800 nm LED used for calibration during the test.To exploring the reason why PMT produces"red storm effect",the single photoelectron test method was used to test the response of PMT to 815 nm and 1064 nm infrared light.The result verified that the bi-alkali PMT have response to the 815nm and 1064nm infrared light in SPE state,and proved that 800 nm infrared light can not be directly used for position calibration experiment of bi-alkali photocathode PMT.In order to investigate the response of the bi-alkali photocathode PMT in the quantum efficiency(QE)non-responsive band,the response characteristics of the PMT to ultraviolet light were tested.The results showed that the single photon state of photomultiplier tube had a response to 265 nm ultraviolet light,which provided a reference for the design of anti-virus solution using ultraviolet light in JUNO.We continued to test the response characteristics of silicon photomultiplier tubes(SiPM)and photodiodes(PD)to 1064 nm infrared light and 265 nm ultraviolet light.Studies showed that the SiPM had obvious response to both 1064 nm infrared light and 265 nm ultraviolet light.Different types of PD had different degrees of response in the non-responsive bands.The results provide a reference for the range of use,performance calibration and error analysis of semiconductor optoelectronic devices.At last,the temperature efifect of PMT and SiPM were studied.In the temperature range of-40?-20?,the performance of the PMT did not change significantly,indicating that the PMT can be used at-40? low temperature.The detection capability of SiPM was reduced in the temperature range of 0? to 20?,and the performance of the driver board needs to be further optimized to meet the application requirements of SiPM at low temperatures.