A new UHV-compatible beta detector combining two CMOS tracking planes with a scintillator-SiPM calorimeter reports 35% efficiency above 500 keV, 5% energy resolution at 1 MeV, and sub-mm vertexing for the QuIPS levitated-nanosphere experiment.
Differentiation method for localization of Compton edge in organic scintillation detectors
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abstract
This paper, presents a simple method for accurate calibration of organic scintillation detectors. The method is based on the fact that differentiating the response function leads to accurate estimation of the Compton edge. The differentiation method in addition to the location of the Compton edge, gives insights into the parameters of the folded Gaussian function which is useful for determination of the energy resolution. Moreover, it is observed that the uncorrelated noise in the measurement of the response function does not impose significant uncertainties in the evaluations. By simulation of the bounded electrons and considering the Doppler effects, we are able to calculate a first estimation for the intrinsic Doppler resolution of a plastic scintillator, benefiting from the capability of the differentiation method.
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A compact beta particle momentum detector
A new UHV-compatible beta detector combining two CMOS tracking planes with a scintillator-SiPM calorimeter reports 35% efficiency above 500 keV, 5% energy resolution at 1 MeV, and sub-mm vertexing for the QuIPS levitated-nanosphere experiment.