| With the rapid development of oscilloscope technology, it is possible to have waveform analysis using oscilloscopes. In this thesis, an underlying program based on LabVIEW and a Graphic User Interface was written for oscilloscopes to acquire data. It can be used for different oscilloscopes by calling different drivers. Choosing particular function VIs, can achieve the charge calculation, event counting and waveform storage etc. Based on the data acquisition system, the single photoelectron spectra of R5912PMT has been measured and compared the results with what we got using the standard VME data acquiring system. The results didn’t show much difference between the two systems.As the particle physics develops, it places more demand on the light yield and energy resolution of the scintillator. SrI2:Eu scintillator is a new type of scintillator with high light yield and good energy resolution, so it has caught great attention from many researchers. In This thesis, the properties of SrI2:Eu scintillator has been studied from scintillator coupled with PMTs, and excited by 137Cs and241Am gamma rays. Light signals generated from the scintillator are transformed into electric pulses by PMTs and recorded down by high rate sampling oscilloscope. And then we used ROOT which is a kind of data analysis software to do the analysis on these pulses. The experimental results show that the relative light yield (compared with NaI(Tl)) is455%, decay time is1795ns using662keV gamma source by Cs.ZnS(Ag) is another kind of high light yield scintillator. But its weak optical transparency restricts its application field. Now it’s mainly applied in the fields of film detectors for heavy ion detection and the fluorescent screen. The thesis mixed ZnS(Ag) into the low light yield liquid scintillator and researched the mixtures’properties. The results showed that the light yield of liquid scintillators mixed with ZnS(Ag) increased, the light yield is126.8percent as high as the pure liquid scintillator’s when the concentration of ZnS(Ag) is0.7%, and the average light yield is112.7percent for ZnS (Ag) concentration in the range of0.1%-1%; and the scintillation decay time kept the same. |
