Yoshihara, Koyo (2022) Investigation of the energy resolution of high purity germanium detectors using trapezoidal filtering. Bachelor's Thesis, Physics.
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Abstract
In order to compensate for the count losses experienced in standard pileups rejection methods, the trapezoidal filtering algorithm is implemented to detect the energy of two pulses when piled up together. Results showed that the full width at half maximum without pulse pileups equals 3.26 keV and 3.54 keV with pulse pileups where the pulse time separation is above 4000 nanoseconds. The trapezoidal algorithm consists of three steps: step filter function, moving average filter then the differentiation filter to correct for the ballistic deficits, noise induced high frequency signals and pulse pileups respectively. The algorithm analyzed 20000 waveforms randomly out of 111837 waveforms(each waveform spanning 5000 channels) where all events are artificially piled up for pulse time separations in the ranges of 3000 to 6000 nanoseconds
| Item Type: | Thesis (Bachelor's Thesis) |
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| Supervisor name: | Kavatsyuk, M. and Kalantar-Nayestanaki, N. |
| Degree programme: | Physics |
| Thesis type: | Bachelor's Thesis |
| Language: | English |
| Date Deposited: | 27 Jul 2022 06:55 |
| Last Modified: | 12 Sep 2022 09:14 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/27761 |
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