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Neutron time-of-flight (nToF) instruments are used to provide data on the performance of National Ignition Facility (NIF) fusion experiments. Detectors are located at 4.5 and 20 meters from the center of the target chamber with a 3.9 meter detector to be installed soon. These instruments are used to measure the total neutron emission, temperature of the fuel, time of peak emission (bang time), and...
The OMEGA laser system is being used to investigate several approaches to inertial confinement fusion: the traditional central-hot-spot (CHS) ignition, fast ignition (FI), and shock ignition (SI). To achieve ignition, CHS requires the highly uniform compression of a solid deuterium-tritium (DT)-layered target on a low adiabat (defined as the ratio of the pressure to the Fermi-degenerate pressure)...
A high resolution neutron imaging system (NIS) is developed and tested on the OMEGA laser facility for inertial confinement fusion (ICF) experiments. This diagnostic uses a coded imaging technique with a high resolution neutron camera. Over the past few years, this detector was improved and neutron images can now be acquired on OMEGA with a 20 μm spatial resolution in the source plane and good signal...
A neutron diagnostic has been designed to achieve high energy neutron spectroscopy in large γ background. The concept of this diagnostic is based on the association of a Micromegas detector with a neutron-to-charged particle converter. Electrons produced by γ-rays go through the Micromegas with a low ionization probability, making the detector γ-rays insensitive. This low γ sensitivity makes this...
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