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Joshua Daw |
Joshua Daw, a University of Idaho student completing his doctoral
thesis work at Idaho National Laboratory’s High Temperature Test
Laboratory, recently earned first prize in the Fuel Cycle Research
Innovations competition for his paper, “Hot Wire Needle Probe for
In-Reactor Thermal Conductivity Measurement” (IEEE Sensors, Aug.
2012).
In November, he will travel to the American Nuclear Society
meeting in Washington, D.C., to accept the award, which is given to support innovation and higher
education in disciplines related to the nuclear fuel cycle.
Daw's winning work, completed with INL researchers Joy Rempe and
Darrell Knudson, addresses the question of how to measure thermal
conductivity during irradiation. Thermal conductivity — which measures
how materials conduct heat — is considered one of the most important
physical characteristics of fuels. In most materials, it
is measured by evaluating samples after being irradiated.
The “cook
and look” approach, as Rempe calls it, is an invasive and expensive
process. Previous methods for taking these measurements during irradiation
required several assumptions that limited accuracy. Working at the INL, Daw developed a method to make such measurements with a hot wire
needle probe. Data collected this way may lead to better simulation design
codes and improvements to the next generation of nuclear reactors.
Daw has a passion for golf and began studying engineering because he wanted to be a
golf club designer. It was a DOE-funded UI/INL research
opportunity that led him to high-temperature instrumentation
instead.
He expects to complete his Ph.D. next May. His post-doctorate
plans include golf and more learning. "There are a few more degrees I am interested in,
so who knows?” he said.