Calibration and Repeatability of the Dante Soft X-Ray Spectrometer in Hohlraum Experiments at the Nova, Omega and NIF Laser Facilities

Details Calibration and Repeatability of the Dante Soft X-Ray Spectrometer in Hohlraum Experiments at the Nova, Omega and NIF Laser Facilities Calibration and Repeatability of the Dante Soft X-Ray Spectrometer in Hohlraum Experiments at the Nova, Omega and NIF Laser Facilities

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..dppup1033c&link_type=abstract

American Physical Society, 45th Annual Meeting of the Division of Plasma Physics, October 27-31, 2003, Albuquerque, New Mexico,

Physics

Plasma Physics

Scientific paper

One key parameter in the design and optimization of ICF indirect drive experiments is the measurement of the absolute radiation drive flux inside the hohlraum. This has been accomplished on both Nova and Omega with the Dante x-ray spectrometer, DMX, and diamond PCDs. With the ability to measure the absolute soft x-ray flux for photon energies up to 3keV we can determine material albedo, laser to x-ray conversion efficiency and the characteristic blackbody temperature. The Dante x-ray spectrometer is the core diagnostic for absolute flux measurement on Omega and a new version capable of measuring photon energies up to 10 keV to cover the predicted fluxes will serve the same function on NIF. Each channel has a characteristic spectral response depending on the transmission of the filters, the reflectivity of the mirrors and the response of the x-ray diodes. Periodic calibrations on these three elements from 60 eV up to 6 keV have been performed for the last two years at the National Synchrotron Light Source at Brookhaven National Lab and compared to previous measurements. This allows us to update the Dante analysis with the latest measured response functions. The Dante measured peak radiation temperatures for various Nova and Omega hohlraum experiments have been compared using the Marshak scaling method and agree well with each other for the expected laser conversion efficiencies of up to 90% for Au hohlraums. This method will be used starting with the early NIF Dante to bridge the experimental data between facilities.

Affiliated with

Also associated with

No associations

Rating

Calibration and Repeatability of the Dante Soft X-Ray Spectrometer in Hohlraum Experiments at the Nova, Omega and NIF Laser Facilities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Calibration and Repeatability of the Dante Soft X-Ray Spectrometer in Hohlraum Experiments at the Nova, Omega and NIF Laser Facilities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calibration and Repeatability of the Dante Soft X-Ray Spectrometer in Hohlraum Experiments at the Nova, Omega and NIF Laser Facilities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-914791