1. Independent operations of 3 legs of OMEGA-60 Long-term request: 3 independent legs –Benefits include Overall increased flexibility in beam/driver configuration Use 2 beam legs on BL Driver 3 independent pulse shapes Beam delays longer than current PLAS limitations Increased energy performance on BL Driver Short-term request: 2 legs on BL driver –Benefits include Overall increased flexibility in beam/driver configuration Use 2 beam legs on BL Driver Increased energy performance on BL Driver Carolyn Kuranz OLUG 2011

2. Using 2 beam legs on BL Driver would benefit experiments that need bright x-ray sources for diagnostic techniques Techniques such as x-ray radiography and x-ray Thomson scattering require bright x-ray sources Creating x-ray sources from high-Z materials requires high-irradiance laser pulses This will improve current experiments as well as open a new class of experiments involving bright x-ray sources Radiative shock target Be disk Xe filled tube Gold shielding Scattered spectrum collected with the zinc spectrometer. Analysis indicates a weighted average electron temperature of ~35 eV.

3. Beam delays longer than current PLAS limitations can be used to increase delays between multiple observations on a single shot Beneficial to experiments using multiple diagnostic techniques Hartigan et al, Astrophysical Journal, 2009

4. By Q4 FY12 Backlighter driver going down shortly BL driver to use Main regen – Add improved timing diagnostics Could result in better than 100 ps accuracy for very long delays – Improved stability – Improved spatial profile Possible increase in energy

5. Proposal for next FY Add 64 mm amplifier to BL driver – Current configuration of SSD driver (LARA and 64 mm amp) – Increased Energy available

6. Future possibilities 2 leg Limited option – Allows for BL to run 2 specific legs – Leg 1 and 3 OR Legs 2 and 3 – Cost unknown but limited downtime to BL Redo A-split – ~$ 1 mil, large amount of downtime Duplicate 1-split- similar cost, possibly less downtime 3 drivers – very costly, space issues

7. New Recommendation: Imaging Thomson scattering measures plasma conditions along the Thomson scattering probe beam providing spatially resolved data P9 44 P4  T e peaks where the beams cross October ‘ 05 Shots (ITS Activation):  ITS slot was cut 200  m from LEH  Imaging TS uses 200 ps probe pulse for time resolution Imaging TS Data Slide Credit: Steven Ross

8. Summary Recommendations completed or underway – Increased accuracy in driver-to-driver timing for long driver delays – 10 additional SG8 phase plates – Improved BL driver performance New or continued recommendations – Independent operation of 3 beam legs – Imaging UVTS – Foreground illumination in TVS viewers

9. Thanks to… Jason Puth Elizabeth Hill Steve Stagnitto Sam Morse and many more..

10. P1 P12 Viewed from TIM2 Target Plane P9 The spectral slit has been aligned with the 4  probe beam by rotating the spectrometer by 52 degrees P12 P9 P1 Spectrometer view (prior to rotation) 52 o CW Rotation Spectrometer is rotated by 52 degrees to align the spectral slit along the P9 axis (hohlraum axis) Grid is rotated 52 CW by transport mirrors Field of view is 2-mm System resolution: clearly resolves 63 micron features P9 Slot (0.5mm x 1.6mm) 44 Slide Credit: Steven Ross

11. Update on improved timing for long delays between drivers Currently using longer sweep speed on P510s which has improved timing accuracy LLE is continuing to improve this by adding a timing scope on the front end – Could result in better than 100 ps accuracy for very long delays