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DMR-17 Scintillator Samples

Fabrication

In sample DMR-17B, a | Kuraray Y-11 WLS fiber was attempted to be added to the scintillator sample in situ.

Table 1: Summary of Scintillator Samples
Sample Name Sample Fabrication Location Sample Characteristics Polymerization Time Notes
DMR-17A Water Bath No BPO added 15 days Sample still showed no signs of polymerizing so trial was abandoned.
DMR-17B Test Equity Oven 0.8% BPO, WLS fiber imbedded in sample 5 days When samples were examined 24 hours after polymerization began, glue appeared to have melted. The fiber also appeared to have melted. The exothermic polymerization process may have caused the temperature to be higher than anticipated.
DMR-17C Test Equity Oven 0.8% BPO 5 days Notably more bubbles are observed in this sample as compared to DMR-17D. It is not known why this has occurred. Perhaps heat removal from the system wasn't as good as it was in a water bath,
DMR-17D Water Bath 0.8% BPO 5 days Standard sample, some minor crazing on outside
Figure 1: DMR-17C (oven)
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Figure 2: DMR-17D (water bath)
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