Rahul Shah
(Laboratory for Laser Energetics, University of Rochester)
D. Cao
(Laboratory for Laser Energetics, University of Rochester)
R. Epstein
(Laboratory for Laser Energetics, University of Rochester )
S.P. Regan
(Laboratory for Laser Energetics, University of Rochester )
W. Theobald
(Laboratory for Laser Energetics, University of Rochester )
B. Kraus
(Princeton Plasma Physics Laboratory)
L. Gao
(Princeton Plasma Physics Laboratory)
K. Hill
(Princeton Plasma Physics Laboratory)
B. Stratton
(Princeton Plasma Physics Laboratory)
P. Efthimion
(Princeton Plasma Physics Laboratory)
B. Bachmann
(Lawrence Livermore National Laboratory)
A design is presented of a multichannel x-ray imager spanning energies from 5 to 30 keV for use as a fixed-port diagnostic for OMEGA experiments. The purpose of the absolute, multichannel imaging radiation diagnostic is to infer electron temperature Te and thereby provide a new approach to existing hot-spot temperature and pressure measurements. In contrast to the standard approach of inferring ion temperature from fusion neutrons, this x-ray based technique is insensitive to hydrodynamic motions. Absolute x-ray yield will be measured in channels defined by increasing amounts of titanium filtration and this signal will be used to fit a parameterized hot-spot emission model. The range is selected to probe optically thin x-rays and provide 100-eV sensitivity of inferred Te. The multispectral imaging will use a hybrid-penumbral approach so as to separate the hot-spot from coronal hot-electron emission yet maximize signal. Magnification will be 10× and 20× for ~5- to 10-μm resolution of the hot-spot as recorded on a time-integrated, absolutely calibrated image-plate detector. This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0001944.
Rahul Shah
(Laboratory for Laser Energetics, University of Rochester)
D. Cao
(Laboratory for Laser Energetics, University of Rochester)
R. Epstein
(Laboratory for Laser Energetics, University of Rochester )
S.P. Regan
(Laboratory for Laser Energetics, University of Rochester )
W. Theobald
(Laboratory for Laser Energetics, University of Rochester )
B. Kraus
(Princeton Plasma Physics Laboratory)
L. Gao
(Princeton Plasma Physics Laboratory)
K. Hill
(Princeton Plasma Physics Laboratory)
B. Stratton
(Princeton Plasma Physics Laboratory)
P. Efthimion
(Princeton Plasma Physics Laboratory)
B. Bachmann
(Lawrence Livermore National Laboratory)
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