Engineering the Petawatt Laser into Nova

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The engineering process of integrating the Petawatt (10{sup 15} watts) laser system into the existing 30 kJ (UV) Nova laser at Lawrence Livermore National Laboratory (LLNL) is described in detail. The nanosecond-long, chirped Petawatt laser pulse is initially generated in a separate master oscillator room and then injected into one of Nova`s 10 beamlines. There, the pulse is further amplified and enlarged to {approximately}{phi}60 cm, temporally compressed under vacuum to <500 fs using large diameter diffraction gratings, and then finally focused onto targets using a parabolic mirror. The major Petawatt components are physically large which created many significant engineering challenges ... continued below

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15 p.

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Tietbohl, G.L.; Bell, P.M. & Hamilton, R.M. December 23, 1997.

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Description

The engineering process of integrating the Petawatt (10{sup 15} watts) laser system into the existing 30 kJ (UV) Nova laser at Lawrence Livermore National Laboratory (LLNL) is described in detail. The nanosecond-long, chirped Petawatt laser pulse is initially generated in a separate master oscillator room and then injected into one of Nova`s 10 beamlines. There, the pulse is further amplified and enlarged to {approximately}{phi}60 cm, temporally compressed under vacuum to <500 fs using large diameter diffraction gratings, and then finally focused onto targets using a parabolic mirror. The major Petawatt components are physically large which created many significant engineering challenges in design, installation and implementation. These include the diffraction gratings and mirrors, vacuum compressor chamber, target chamber, and parabolic focusing mirror. Other Petawatt system components were also technically challenging and include: an injection beamline, transport spatial filters, laser diagnostics, alignment components, motor controls, interlocks, timing and synchronization systems, support structures, and vacuum systems. The entire Petawatt laser system was designed, fabricated, installed, and activated while the Nova laser continued its normal two-shift operation. This process required careful engineering and detailed planning to prevent experimental downtime and to complete the project on schedule.

Physical Description

15 p.

Notes

OSTI as DE98057754

Other: FDE: PDF; PL:

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  • SPIE international symposium, San Jose, CA (United States), 8-14 Feb 1997

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  • Other: DE98057754
  • Report No.: UCRL-JC--127749
  • Report No.: CONF-970231--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 310909
  • Archival Resource Key: ark:/67531/metadc686315

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  • December 23, 1997

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  • July 25, 2015, 2:20 a.m.

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  • April 10, 2017, 1:45 p.m.

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Tietbohl, G.L.; Bell, P.M. & Hamilton, R.M. Engineering the Petawatt Laser into Nova, article, December 23, 1997; California. (digital.library.unt.edu/ark:/67531/metadc686315/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.