2
Ross Filter Soft X-Ray
Imaging System for Time Resolved Spectral Measurements in Magnetically Confined
Plasmas--FARTECH, Inc., 3146 Bunche Avenue, San Diego, CA
92122-02247; 858-455-6655
Dr. Loan Bogatu, Principal Investigator, nbogatu@far-tech.com
Dr. Jin-Soo Kim, Business
Official, kimjs@far-tech.com
DOE Grant No.
DE-FG03-01ER83242
Amount: $100,000
Improved
measurements of impurity concentrations in the plasma core of fusion reactors
would provide a better understanding of particle dynamics, thermal transport,
and radiative dissipation, and thus accelerate the achievement of fusion energy.
Detection systems employing Ross filters can isolate X-ray emission lines of
specific elements and provide high spatial and temporal spectral resolutions.
Therefore, this project will design, fabricate,
and test a Ross filter pair and associated numerical analysis programs to
analyze the dynamics of various atomic species.
The technology will be installed on an X-ray imaging system at the DIII-D
National Fusion Facility. Phase
I will use existing Ross filter data for the Ar lines
at DIII-D to obtain relevant physical quantities such as impurity concentration
evolution. Then, a Ross
filter pair will be designed with improved balance, and optimized
for argon lines for spectral measurements from the DIII-D plasmas. A conceptual
design will be developed for an integrated system comprised of Ross filters, the
associated numerical analysis tools, and the DIII-D X-ray imaging system.
Commercial
Applications And Other Benefits as described by the awardee : The
Ross filter system should find use as a routine diagnostic tool with X-ray
imaging systems on magnetic confinement fusion plasma devices (tokamaks,
reversed field pinches, and stellarators), inertial confinement fusion plasma,
and high intensity pulsed power X-ray sources, such as the Z-pinch plasma. The
filters should also find use in medical imaging and on space vehicles or
satellites for the measurement of astrophysical X-ray emission sources.