A miniaturized alpha spectrometer for the calibration of an avalanche-confinement TEPC
| Autor: | Stefano Agosteo, V. Conte, P. Colautti, Andrea Pola, M.V. Introini, D. Bortot, Stefano Pasquato |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Instrumentation
Analytical chemistry Proportional counter Microdosimetry Radiation 01 natural sciences 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Optics Cm-244 alpha source Solid state detector (SSD) TEPC calibration Tissue equivalent proportional counter (TEPC) 0103 physical sciences Calibration Physics Spectrometer 010308 nuclear & particles physics business.industry Detector Alpha particle business Energy (signal processing) |
| Popis: | The design and development of a recent avalanche-confinement tissue equivalent proportional counter (TEPC) for microdosimetry and nanodosimetry applications required the selection of a proper miniaturized solid state detector (SSD) for detecting alpha particles emitted by a thick removable Cm-244 source embedded in the cylindrical TEPC chamber for characterization and calibration purposes. Since the available cavity for embedding the SSD detector is only 4.2 mm in diameter, no standard devices can be exploited. The selection of the best SSD for this application was based on the following requirements: very low size, proper energy resolution, cheapness. The performances of the finally selected SSD were assessed by exploiting a multi-peak calibration alpha source (Pu-239, Am-241, Cm-244). The measured energy resolution resulted about 25 keV FWHM. The TEPC calibration procedure, which exploits the selected SSD aligned to the built-in Cm-244 alpha source, is described in details. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|