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You searched for subject:(Americium Beryllium). Showing records 1 – 2 of 2 total matches.

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Texas A&M University

1. Merchant, Lance William. Neutronics Simulations of Graphite Experiments.

Degree: 2016, Texas A&M University

A widely used method for Neutronics simulations is MCNP6. Throughout this work, multiple MCNP6 simulations were completed on different supercomputers. These simulations entailed realistic representations of experiments being completed. The IM1 configuration was simulated with the corrected source definition. This geometry resulted in 0.222 as the graphite to air ratio. The IM1 experiment required many different configurations to be modeled in MCNP6. In order to further characterize the experiment different boric acid concentrations were poured in a beaker. The boric acid concentration produced an exponential fit, this represented the decrease in absorptions per second as the boric acid concentration was increased. With the progression of the project a more complex problem was created. This year 5 geometry was approached primarily through a straightforward stacked air duct problem. These results concluded that with the addition of a more complex geometry MCNP6 would require many neutron particle histories and become computationally expensive. Finally, in anticipation of the arrival of the neutron generator safety calculations were completed. These calculations yielded an estimated dose of 107.04 ? 0.3 mrem per hour in the entrance way during operation. The estimated dose was less than 5 mrem per hour in every other location of concern. The geometries were developed in MCNP6 and converted into PDT readable formats. This work was completed in order to aid in the validation of PDT development. Advisors/Committee Members: Adams, Marvin L (advisor), McClarren, Ryan G (advisor), Rauchwerger, Lawrence (committee member).

Subjects/Keywords: Graphite; CERT; AmBe; Americium; Beryllium; Americium-Beryllium; Boric Acid; IM1; Year 5; Impurities Model

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Merchant, L. W. (2016). Neutronics Simulations of Graphite Experiments. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/159090

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Merchant, Lance William. “Neutronics Simulations of Graphite Experiments.” 2016. Thesis, Texas A&M University. Accessed March 18, 2019. http://hdl.handle.net/1969.1/159090.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Merchant, Lance William. “Neutronics Simulations of Graphite Experiments.” 2016. Web. 18 Mar 2019.

Vancouver:

Merchant LW. Neutronics Simulations of Graphite Experiments. [Internet] [Thesis]. Texas A&M University; 2016. [cited 2019 Mar 18]. Available from: http://hdl.handle.net/1969.1/159090.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Merchant LW. Neutronics Simulations of Graphite Experiments. [Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/159090

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Laurentian University

2. Semenec, Ingrida. Design of a neutron calibration source for the SNO+ experiment .

Degree: 2017, Laurentian University

SNO+ is a multipurpose detector situated at the SNOLAB facility located at Creighton mine 2 km deep. The SNO+ experiment will have three phases: water, pure scintillator and Te-loaded scintillator. With the detector filled with scintillator, solar neutrinos, geo and reactor anti-neutrinos, and supernova neutrinos can be studied. To analyze the data collected by the detector, it is important to have detailed knowledge of the detector response. This is why calibration is a crucial part of the experiment. The detector response to neutrons will allow us to study the anti-neutrino flux coming from reactors in Canada. Anti-neutrinos can be detected via the inverse beta decay reaction which can be tagged using the neutrons it produces. This thesis will discuss the radioactive calibration source Americium Beryllium (AmBe) which produces neutrons and gammas. The existing AmBe source - inherited from the SNO experiment - that will be used in water phase has to be modified for the scintillator and loaded scintillator phases. Simulations were carried out to determine the optimal additional shielding required for the scintillator phase. The optimal shielding was determined to be 2 mm of lead surrounded by 1 mm of stainless steel for the encapsulation. The new design for the AmBe source was finalised. The estimated neutron capture event detection efficiency is 74.22%. The analysis of the source deployment at various positions within the detector and the shadowing effects are discussed as well.

Subjects/Keywords: SNO+; SNOLAB; Creighton mine; scintillator; detector; calibration; neutrons; Americium Beryllium (AmBe)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Semenec, I. (2017). Design of a neutron calibration source for the SNO+ experiment . (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/handle/10219/2992

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Semenec, Ingrida. “Design of a neutron calibration source for the SNO+ experiment .” 2017. Thesis, Laurentian University. Accessed March 18, 2019. https://zone.biblio.laurentian.ca/handle/10219/2992.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Semenec, Ingrida. “Design of a neutron calibration source for the SNO+ experiment .” 2017. Web. 18 Mar 2019.

Vancouver:

Semenec I. Design of a neutron calibration source for the SNO+ experiment . [Internet] [Thesis]. Laurentian University; 2017. [cited 2019 Mar 18]. Available from: https://zone.biblio.laurentian.ca/handle/10219/2992.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Semenec I. Design of a neutron calibration source for the SNO+ experiment . [Thesis]. Laurentian University; 2017. Available from: https://zone.biblio.laurentian.ca/handle/10219/2992

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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