Ultracold neutron storage in a bottle coated with the fluoropolymer CYTOP
The fluoropolymer CYTOP was investigated in order to evaluate its suitability as a coating material for ultracold neutron (UCN) storage vessels. Using neutron reflectometry on CYTOP-coated silicon wafers, its neutron optical potential was measured to be 115.2(2) neV. UCN storage measurements were ca...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
30 July 2022
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| In: |
The European physical journal. A, Hadrons and nuclei
Year: 2022, Volume: 58, Issue: 7, Pages: 1-14 |
| ISSN: | 1434-601X |
| DOI: | 10.1140/epja/s10050-022-00791-x |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1140/epja/s10050-022-00791-x
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| Author Notes: | Thomas Neulinger, Douglas Beck, Euan Connolly, Skyler Degenkolb, Peter Fierlinger, Hanno Filter, Jürgen Hingerl, Pontus Nordin, Thomas Saerbeck, Oliver Zimmer |
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| 520 | |a The fluoropolymer CYTOP was investigated in order to evaluate its suitability as a coating material for ultracold neutron (UCN) storage vessels. Using neutron reflectometry on CYTOP-coated silicon wafers, its neutron optical potential was measured to be 115.2(2) neV. UCN storage measurements were carried out in a 3.8 l CYTOP-coated aluminum bottle, in which the storage time constant was found to increase from 311(9) s at room temperature to 564(7) s slightly above 10 K. By combining experimental storage data with simulations of the UCN source, the neutron loss factor of CYTOP is estimated to decrease from 1.1(1)$$\times 10^{-4}$$to 2.7(2)$$\times 10^{-5}$$at these temperatures, respectively. These results are of particular importance to the next-generation superthermal UCN source SuperSUN, currently under construction at the Institut Laue-Langevin, for which CYTOP is a possible top-surface coating in the UCN production volume. | ||
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| 700 | 1 | |a Nordin, Pontus |e VerfasserIn |4 aut | |
| 700 | 1 | |a Saerbeck, Thomas |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zimmer, Oliver |e VerfasserIn |4 aut | |
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