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High Heat Flux Testing Capabilities at S an
National Laboratories - New Mexico
HIGH HEAT FLUX TESTING
CAPABILITIES AT SANDIA NATIONAL
LABORATORIES - NEW MEXICO
Dennis L. Y
Jimmie M. M
High heat flux testing for the United States fusion power
program is the primary mission of the Plasma Materials Test
Facility (PMTF) located at Sandia National Laboratories - New
Mexico. This facility, which is owned by the United States
Department of Energy, has been in operation for over 17 years
and has provided much of the high heat flux data used in the
design and evaluation of plasma facing components for many
of the world's magnetic fusion, tokamak experiments. In
addition to domestic tokamaks such as Tokamak Fusion Test
Reactor (TFTR) at Princeton and the DIII-D tokamak at General
Atomics, components for international experiments like
TEXTOR, Tore-Supra, and JET also have been tested at the
PMTF. High heat flux testing spans a wide spectrum
including thermal shock tests on passively cooled materials,
thermal response and thermal fatigue tests on actively cooled
components, critical heat flux-burnout tests, braze reliability
tests and safety related tests. The objective of this article is to
provide a brief overview of the high heat flux testing
capabilities at the PMTF and describe a few of the experiments
performed over the last year.
The Plasma Materials Test Facility (PMTF) is a dedicated
United States Department of Energy high heat flux component
test facility located at Sandia's site in Albuquerque, New
Mexico. The facility is comprised of several major systems,
including two electron beam systems. The 30 kW Electron
Beam Test System (EBTS) has been in operation for over 17.
years, while the 1200 kW Electron Beam System (EB-1200)
was commissioned only recently. Other fine facilities exist in
Sponsored by the Office of Fusion Energy, U.S. Department
of Energy, under contract DE-AC04-94AL85000 with Martin
Marietta Energy Systems, Inc.
. Wold t
y Dept. 6531
Laboratories O rTi
the United States for high heat flux (HHF) testing of optical
components (Stapp, 1992), but the primary mission of the
EBTS and EB-1200 is to expose actively cooled plasma facing
components to the intense surface heat loads experienced in
fusion devices. Related HHF applications such as microwave
gyrotron cavities and neutral beam dumps are also studied.
The PMTF has been involved with many international
collaborations involving government laboratories in the
European Union, Russian Federation and Japan. Each of these
parties has similar electron beam high heat flux facilities such
as the 30 kW JUDITH e-beam in Germany, the 200 kW FE-200
e-beam in France, the 400 kW JEBIS e-beam in Japan and 60
kW TSEFEY e-beam in Russia. Several collaborative
experiments are sponsored each year involving personnel
from these international facilities and the PMTF. Currently,
testing of plasma facing components is underway in all of
these facilities in support of the International Thermonuclear
Experimental Reactor (ITER). In addition to ITER, the PMTF
will soon begin testing components for the Tokamak Physics
Experiment (TPX) which will replace TFTR in 1996. Testing
is also performed for small businesses under the Department
of Energy Small Business Innovation Research Program to
investigate innovative heat transfer technologies for both
fusion and commercial applications. HHF test results from
the PMTF are typically published in Fusion Technology,
Nuclear Fusion, Fusion Engineering, Journal of Fusion
Energy, Journal of Nuclear Materials, Journal of Vacuum
Science and Technology and occasionally in the ASME
Journal and in the SPIE Proceedings. Numerous references to
the above tokamak experiments and international high heat
flux test facilities may be found in the first four journals
The EB-1200 is used for testing of medium-scale (1 m Y 1
m) components and prototypes, while the EBTS is used for
HHF testing and research on small prototypes (10 cm x 10
cm). Both systems share a state-of-the-art, high-pressure,
high-temperature flow loop, which can supply high-quality
coolant water (de-ionized and de-mineralized) over a wide
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Youchison, D.L.; McDonald, J.M. & Wold, L.S. High heat flux testing capabilities at Sandia National Laboratories - New Mexico, article, December 31, 1994; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc622331/m1/1/: accessed December 11, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.