UCN Detector development for the TRIUMF Neutron EDM experiment
| dc.contributor.author | Fleurette, Doresty Fonseca | |
| dc.contributor.examiningcommittee | Mammei, Juliette (Physics and Astronomy) Schreckenbach, Georg (Chemistry) | en_US |
| dc.contributor.supervisor | Gericke, Michael (Physics and Astronomy) Page, Shelley (Physics and Astronomy) | en_US |
| dc.date.accessioned | 2016-04-07T20:25:01Z | |
| dc.date.available | 2016-04-07T20:25:01Z | |
| dc.date.issued | 2016 | |
| dc.degree.discipline | Physics and Astronomy | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | A new measurement of the neutron electric dipole moment (nEDM) is being developed at TRIUMF, where a high density source of ultra cold neutrons (UCN) is currently under construction. A fast, high-efficiency UCN detector is needed for the experiment, and a 6-Li doped glass scintillation detector is being explored for this purpose. In this work, simulations and test measurements were carried out to optimize the light guide design for the new UCN detector. Acrylic and air-core light guides, the latter with two different reflecting surfaces, were considered. Three prototype light guides were constructed and tested, and results were compared with simulations. The best solution was found to be an acrylic guide, wrapped with mylar foil. For a guide 12 cm in length as required by the experimental layout, a lower limit of approximately 25 photoelectrons per neutron capture was established for the proposed geometry and photomultiplier configuration. | en_US |
| dc.description.note | May 2016 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1993/31186 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.subject | UCN Detector, TRIUMF, Neutron EDM, Li-doped glass scintillators, Light guide, Air-core light, Geant4, Light collection, Npe, Photoelectrons, Cold Neutron Production, UCN production, Moderation process, KEK–RCNP, Lithium glass, nEDM, Miro, GS20, GS30, CP violation, Ramsey, Spallation, Superthermal, He-II, 241Am source, CAEN VME | en_US |
| dc.title | UCN Detector development for the TRIUMF Neutron EDM experiment | en_US |
| dc.type | master thesis | en_US |