Browsing Electronic Theses and Dissertations by Author "Machrafi, Rachid"
Now showing items 1-14 of 14
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Characterization of neutron fields around an intense neutron generator
Kicka, Leslie (2016-12-01)Neutron fields in the vicinity of the University of Ontario Institute of Technology neutron facility have been investigated in a series of simulations and experiments. The neutron fluence at several locations around the ... -
The conceptualization and parameterization of a gaseous detector rasterizing pinhole gamma camera
Price, Terry J. (2016-08-01)This thesis details the conceptualization and parameterization of a gaseous detector rasterizing pinhole gamma camera. In this thesis, there is a literature review that describes the historical development of gamma imaging, ... -
Development and characterization of a dual neutron and gamma detector
Fariad, Abuzar (2011-08-01)A dual neutron and gamma detection system has been developed for online measurements. The system consists of a single crystal mounted on a photomultiplier tube to detect simultaneously gamma radiation as well as thermal ... -
Development and characterization of a high resolution portable gamma spectrometer
Ali, Muhammad (2012-04-01)The recent disaster of Fukushima in Japan combined with the high demand to enhance nuclear safety and to minimize personal exposure to radioactive materials has a significant impact on research and development of radiation ... -
Development of a semi-autonomous directional and spectroscopic radiation detection mobile platform
Miller, Alexander Luke (2014-03-01)This thesis presents a method for a small, inexpensive mobile robot equipped with a single high resolution scintillation detector to quickly survey an area and convey information about local sources of gamma radiation to ... -
Development of energy compensated Geiger Muller detector based on the T2416A Canberra Co. GM detector
Mohamed Noor, Omar (2013-07-08)Geiger Muller counters have been a fundamental device in radiation detection for decades due to their simplicity and low cost. Canberra Company has been designing and manufacturing Geiger Muller detectors in various designs ... -
Development of neutron monitor for fusion systems
Li, Zhe (2022-04-01)Currently, the detection of neutrons employs sensors with a high thermal neutron response embedded in a thermalizing medium. However, this approach does not provide much information on neutron energy and, therefore, is ... -
Evaluation of the bubble spectrometer performance in space-like neutron fields
Montague, Talon James (2021-02-01)The Space Bubble Detector Spectrometer (SBDS) consists of six bubble detectors each with a different neutron energy threshold. To characterize the spectrometer in a space-like neutron field, a series of experiments were ... -
Investigation of the bubble detector response to high LET space radiation
Miller, Alexander L. (2018-08-01)The radiation environment aboard spacecraft is a complex mixture of neutrons, photons, protons, heavy ions and other particles. A special type of superheated droplet detectors referred to as space bubble detectors (SBD) ... -
Neutron production in a spherical phantom aboard the international space station
Tasbaz, Azadeh (2010-12-01)Since the beginning of space exploration in last century, several kinds of devices from passive and active dosimeters to radiation environment monitors have been used to measure radiation levels onboard different space ... -
A new approach to neutron spectrometry with multi-element scintillators
Khan, Nafisah (2014-02-01)The combined effects of the nuclear industrial renaissance, the events of 9/11, and the Fukushima disaster have had a significant impact on the research and development of radiation detection instrumentation. Notably, there ... -
Optimization of plastic scintillator thicknesses for online beta detection in mixed fields
Pourtangestani, Khadijeh (2010-12-01)For efficient beta detection in a mixed beta gamma field, Monte Carlo simulation models have been built to optimize the thickness of a plastic scintillator, used in whole body monitor. The simulation has been performed ... -
Study of LaBr3 (Ce) detector response to high energy helium ions
Nayve, Christian (University of Ontario Institute of Technology, 2022-04-01)The space radiation environment is a complex mixed field composed of neutral and charged particles such as photons, protons, alpha, and other particles. The mixture of these different particles creates a challenge in any ... -
Transmutation rates in the annulus gas of pressure tube water reactors
Ahmad, Mohammad Mateen (2011-07-01)CANDU (CANada Deuterium Uranium) reactor utilizes Pressure Tube (PT) fuel channel design and heavy water as a coolant. Fuel channel annulus gas acts as an insulator to minimize heat losses from the coolant to the moderator. ...