To safely encase and store spent fuel assemblies in its final geological storage, accurate measurements of their heat output must be performed. To this end, information about the geometry and sensor set-up of the calorimeter at the interim storage facility CLAB was gathered. The data from the temperature sensors where compared to each other and an analytical expression was proposed to fit the data. A methodology for calculating calibration curves was formulated and its uncertainties were evaluated. Differences were found between the fits of measurements from differing measurement campaigns. The measurement campaigns resulted in calibration curves with notable offset from each other. The computer code SERPENT2 was used to construct a 3d geometry model of the calorimeter and the ratio of photons entering and escaping the calorimeter wall was calculated for photon energies which dominate the gamma spectrum from spent fuel assemblies of about 5 to 40 years cooling time.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:uu-419966 |
| Date | January 2019 |
| Creators | Lindberg, William |
| Publisher | Uppsala universitet, Tillämpad kärnfysik |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | FYSAST ; FYSPROJ1203 |
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