Neutron Measurements at a High Energy Proton Accelerator in Brookhaven National Laboratory
Public Deposited- Last Modified
- February 28, 2019
- Creator
-
Xie, Yunrui
- Affiliation: Gillings School of Global Public Health, Department of Environmental Sciences and Engineering
- Abstract
- Neutron spectra near the Brookhaven National Laboratory alternating gradient synchrotron (ACS) were measured using the Bonner multisphere neutron spectrometry technique and scintillator or graphite block. Moderators and associated electronics have been mounted on a movable cart so that simultaneous data taking was possible using seven Bonner spheres and carbon activation detectors. A plastic scintillator or graphite block can be irradiated to measure high energy neutrons via the 12^C(n,2n)11^C activation reaction. Spectra were unfolded with a modified version of Sanna's code, BON5, using Bonner system data alone and a combination of data from the Bonner system and a carbon activation detector. A comparison between these two results may indicate the significance of adopting carbon activation detectors in the neutron measurements. Sample spectra are presented and interpreted for absorbed dose and conventional dose equivalent. Tests were performed to evaluate the ability of the code in unfolding different trial spectra. Code testing results are also presented to examine the effect of initial parameters on the unfolded spectrum. The paper presents one method of neutron spectra measurement utilizing the combined data from the Bonner system and plastic scintillator. The field survey data and a brief discussion are also presented.
- Date of publication
- January 1989
- DOI
- Resource type
- Rights statement
- In Copyright
- Advisor
- Crawford-Brown, Douglas J.
- Thompson, William J.
- Watson, James E.
- Degree
- Master of Science in Public Health
- Academic concentration
- Industrial Hygiene
- Degree granting institution
- University of North Carolina at Chapel Hill
- Graduation year
- 1989
- Language
- Deposit record
- ad7e9272-7c4f-43e0-afeb-7a5f2526ad76
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