Studies on the module structure for the NOvA liquid scintillator neutrino detector
2014-12
Loading...
View/Download File
Persistent link to this item
Statistics
View StatisticsJournal Title
Journal ISSN
Volume Title
Title
Studies on the module structure for the NOvA liquid scintillator neutrino detector
Authors
Published Date
2014-12
Publisher
Type
Thesis or Dissertation
Abstract
This thesis contains studies pertinent to the construction of modules for the detectors of the NOvA experiment.The tensile strength of acrylic and epoxy adhesives used in construction of the detector was studied over time and with various surface preparations. Aging in oil or in air in a hot box as well as sanding and corona discharge surface treatments were examined. All materials used in the detector were studied to determine if interaction would occur with and degrade the pseudocumene liquid scintillator.Following the appearance of cracking manifold covers in installed modules, studies were done to determine the cause and mitigation of these cracks. Manifold covers that had been pressurized during a seal check during module construction were examined for the formation of cracks. Internal cracks were visible on the majority of manifold covers tested at 1.4 bar with the original containment units. It was found that reducing the pressure testing of the modules from 1.4 bar to 0.7 bar and increasing the rigidity of the pressure test containment units eliminated the formation of visible cracks in the manifold covers.
Keywords
Description
University of Minnesota M.S. thesis. December 2014. Major: Mechanical Engineering. Advisor: Professor Thomas Chase. 1 computer file (PDF); x, 117 pages, appendices A-B.
Related to
Replaces
License
Series/Report Number
Funding information
Isbn identifier
Doi identifier
Previously Published Citation
Suggested citation
Slotman, Michael James. (2014). Studies on the module structure for the NOvA liquid scintillator neutrino detector. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/170835.
Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.