Storage of ultracold neutrons in high resistivity, non-magnetic materials with high Fermi potential

We report the use of deuterated polystyrene (dPS) and deuterated polyethylene (dPE) for the storage of ultracold neutrons (UCN) in an experiment to search for a finite neutron electric dipole moment (nEDM). The Fermi potential of thin film coatings on silicon was measured by cold neutron reflectomet...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2008-12, Vol.597 (2), p.222-226
Main Authors: Bodek, K., Daum, M., Henneck, R., Heule, S., Kasprzak, M., Kirch, K., Knecht, A., Kuźniak, M., Lauss, B., Meier, M., Petzoldt, G., Schneider, M., Zsigmond, G.
Format: Article
Language:English
Subjects:
Deuterated polyethylene
Deuterated polystyrene
Fermi potential
Neutron reflection
Ultracold neutron storage
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Summary:We report the use of deuterated polystyrene (dPS) and deuterated polyethylene (dPE) for the storage of ultracold neutrons (UCN) in an experiment to search for a finite neutron electric dipole moment (nEDM). The Fermi potential of thin film coatings on silicon was measured by cold neutron reflectometry as V(dPS)=(161±10) neV and V(dPE)=(214±10) neV. The UCN loss factor at room temperature of a dPS-coated polystyrene insulator is η=(3±1)×10 −4.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2008.09.018