Laser and plasma diagnostics for the OMEGA Upgrade Laser System (invited) (abstract)
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299 (United States)
The upgraded OMEGA laser system will be capable of delivering up to 30 kJ of 351-nm laser light with various temporal pulse shapes onto a variety of targets for both ICF and basic plasma physics experiments. ICF experiments will cover a wide parameter space up to near-ignition conditions, and basic interaction and plasma physics experiments will cover previously unattainable parameter spaces. The laser system is the tool with which the experiments are performed; the diagnostics, both of the laser system and the interaction between the laser and the target, form the heart of the experiment. A new suite of diagnostics is now being designed and constructed. Most of these are based on diagnostics previously fielded on the OMEGA laser system very successfully over the last ten years, but there are some new diagnostics, both for the laser and the interaction experiments, which have had to be invented. Laser system diagnostics include high-energy, full-beam calorimetry for all of the 60 beams of the upgrade; a novel, multispectral energy-measuring system for assessing the tuning of the frequency-multiplying crystals; a beam-balance diagnostic that forms the heart of the energy-balance system; and a peak power diagnostic that forms the heart of the power-balance system. Target diagnostics will include the usual time-integrated x-ray imaging systems, both pinhole cameras and x-ray microscopes; x-ray spectrometers, both imaging and spatially integrating; plamsa calorimeters, including x-ray calorimetry; and time-resolved x-ray diagnostics, both nonimaging and imaging in one and two dimensions. Neutron diagnostics will include several measurements of total yield, secondary, and possibly tertiary yield and neutron spectroscopy with several time-of-flight spectrometers. Other measurements will include knock-on'' particle measurements and neutron activation of shell materials as a diagnostic of compressed fuel and shell density.
- OSTI ID:
- 6689981
- Journal Information:
- Review of Scientific Instruments; (United States), Vol. 66:1; ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
OMEGA FACILITY
PLASMA DIAGNOSTICS
CALORIMETRY
INERTIAL CONFINEMENT
LASER TARGETS
NEUTRON SPECTROMETERS
TIME-OF-FLIGHT SPECTROMETERS
X-RAY SPECTROMETERS
CONFINEMENT
MEASURING INSTRUMENTS
PLASMA CONFINEMENT
SPECTROMETERS
TARGETS
700320* - Plasma Diagnostic Techniques & Instrumentation- (1992-)