Optical characterization of the on-target OMEGA focal spot at high energy using the full-beam in-tank diagnostic

Bauer, K. A.; Heimbueger, M.; Kwiatkowski, J.; Sampat, S.; Waxer, L. J.; Cost, E. C.; Kelly, J. H.; Kobilansky, V.; Morse, S. F. B.; Nelson, D.; Weiner, D.; Weselak, G.; Zou, J.

doi:10.1364/ao.395505

Title: Optical characterization of the on-target OMEGA focal spot at high energy using the full-beam in-tank diagnostic

Abstract

The full-beam in-tank (FBIT) diagnostic has been deployed to directly measure the target-plane beam fluence profile, when operated at high energy, of the OMEGA Laser System at the University of Rochester’s Laboratory for Laser Energetics. This article presents the results of early measurements taken with this diagnostic and discusses an improvement that has overcome performance limitations discovered during the initial testing. The diagnostic gives new insight into the ability of the OMEGA Laser System to provide uniform fluence profiles that are consistent across all 60 beams in the laser. Overall, the ultimate goal of the FBIT diagnostic is to allow accurate assessment of the fluence uniformity on a spherical target in 60-beam implosion experiments

Authors:

Bauer, K. A. ^[1]; Heimbueger, M. ^[1]; Kwiatkowski, J. ^[1];

^[1]; Waxer, L. J. ^[1]; Cost, E. C. ^[1]; Kelly, J. H. ^[1]; Kobilansky, V. ^[1]; Morse, S. F. B. ^[1]; Nelson, D. ^[1]; Weiner, D. ^[1]; Weselak, G. ^[1]; Zou, J. ^[1]

Univ. of Rochester, NY (United States). Lab. for Laser Energetics

Publication Date:: Thu Sep 10 00:00:00 EDT 2020

Research Org.:: Univ. of Rochester, NY (United States). Lab. for Laser Energetics

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA); New York State Energy Research andDevelopmentAuthority

OSTI Identifier:: 1660710

Alternate Identifier(s):: OSTI ID: 1658993

Report Number(s):: 2020-51; 1584; 2539
Journal ID: ISSN 1559-128X; 2020-51, 1584, 2539; TRN: US2203537

Grant/Contract Number:: NA0003856

Resource Type:: Accepted Manuscript

Journal Name:: Applied Optics

Additional Journal Information:: Journal Volume: 59; Journal Issue: 26; Journal ID: ISSN 1559-128X

Publisher:: Optical Society of America

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

Citation Formats


                    Bauer, K. A., Heimbueger, M., Kwiatkowski, J., Sampat, S., Waxer, L. J., Cost, E. C., Kelly, J. H., Kobilansky, V., Morse, S. F. B., Nelson, D., Weiner, D., Weselak, G., and Zou, J. Optical characterization of the on-target OMEGA focal spot at high energy using the full-beam in-tank diagnostic.  United States: N. p., 2020. 
Web.  doi:10.1364/ao.395505.

Copy to clipboard


                    Bauer, K. A., Heimbueger, M., Kwiatkowski, J., Sampat, S., Waxer, L. J., Cost, E. C., Kelly, J. H., Kobilansky, V., Morse, S. F. B., Nelson, D., Weiner, D., Weselak, G., & Zou, J. Optical characterization of the on-target OMEGA focal spot at high energy using the full-beam in-tank diagnostic.  United States.  https://doi.org/10.1364/ao.395505

Copy to clipboard


                    Bauer, K. A., Heimbueger, M., Kwiatkowski, J., Sampat, S., Waxer, L. J., Cost, E. C., Kelly, J. H., Kobilansky, V., Morse, S. F. B., Nelson, D., Weiner, D., Weselak, G., and Zou, J. Thu .  
"Optical characterization of the on-target OMEGA focal spot at high energy using the full-beam in-tank diagnostic".  United States.  https://doi.org/10.1364/ao.395505.  https://www.osti.gov/servlets/purl/1660710.

Copy to clipboard


                    
@article{osti_1660710,

  title        = {Optical characterization of the on-target OMEGA focal spot at high energy using the full-beam in-tank diagnostic},

  author       = {Bauer, K. A. and Heimbueger, M. and Kwiatkowski, J. and Sampat, S. and Waxer, L. J. and Cost, E. C. and Kelly, J. H. and Kobilansky, V. and Morse, S. F. B. and Nelson, D. and Weiner, D. and Weselak, G. and Zou, J.},

  abstractNote = {The full-beam in-tank (FBIT) diagnostic has been deployed to directly measure the target-plane beam fluence profile, when operated at high energy, of the OMEGA Laser System at the University of Rochester’s Laboratory for Laser Energetics. This article presents the results of early measurements taken with this diagnostic and discusses an improvement that has overcome performance limitations discovered during the initial testing. The diagnostic gives new insight into the ability of the OMEGA Laser System to provide uniform fluence profiles that are consistent across all 60 beams in the laser. Overall, the ultimate goal of the FBIT diagnostic is to allow accurate assessment of the fluence uniformity on a spherical target in 60-beam implosion experiments},

  doi          = {10.1364/ao.395505},

  journal      = {Applied Optics},

  number       = 26,

  volume       = 59,

  place        = {United States},

  year         = {Thu Sep 10 00:00:00 EDT 2020},

  month        = {Thu Sep 10 00:00:00 EDT 2020}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1364/ao.395505

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Comparison of on-shot, in-tank, and equivalent-target-plane measurements of the OMEGA Laser System focal spot
conference, March 2019

Bauer, Katelynn A.; Heimbueger, Matthew; Sampat, Siddharth
High Power Lasers for Fusion Research V
DOI: 10.1117/12.2506911

Experimental investigation of smoothing by spectral dispersion
journal, January 2000

Regan, Sean P.; Marozas, John A.; Kelly, John H.
Journal of the Optical Society of America B, Vol. 17, Issue 9
DOI: 10.1364/JOSAB.17.001483

The LIL facility quadruplet commissioning
journal, June 2006

Di-Nicola, J. M.; Fleurot, N.; Lonjaret, T.
Journal de Physique IV (Proceedings), Vol. 133
DOI: 10.1051/jp4:2006133119

Direct-drive-implosion experiments with enhanced fluence balance on OMEGA
journal, January 2004

Marshall, F. J.; Delettrez, J. A.; Epstein, R.
Physics of Plasmas, Vol. 11, Issue 1
DOI: 10.1063/1.1628234

Inferred UV fluence focal-spot profiles from soft x-ray pinhole-camera measurements on OMEGA
journal, February 2020

Theobald, W.; Sorce, C.; Donaldson, W. R.
Review of Scientific Instruments, Vol. 91, Issue 2
DOI: 10.1063/1.5120708

Production of high energy, uniform focal profiles with the Nike laser
journal, June 1995

Lehecka, T.; Lehmberg, R. H.; Deniz, A. V.
Optics Communications, Vol. 117, Issue 5-6
DOI: 10.1016/0030-4018(95)00179-C

In situ characterization of high-intensity laser beams on OMEGA
journal, July 2005

Forties, R. A.; Marshall, F. J.
Review of Scientific Instruments, Vol. 76, Issue 7
DOI: 10.1063/1.1947782

Irradiation uniformity for high-compression laser-fusion experiments
journal, May 1999

Skupsky, S.; Craxton, R. S.
Physics of Plasmas, Vol. 6, Issue 5
DOI: 10.1063/1.873501

Performance of 1-THz-bandwidth, two-dimensional smoothing by spectral dispersion and polarization smoothing of high-power, solid-state laser beams
journal, January 2005

Regan, Sean P.; Marozas, John A.; Craxton, R. Stephen
Journal of the Optical Society of America B, Vol. 22, Issue 5
DOI: 10.1364/JOSAB.22.000998

Initial performance results of the OMEGA laser system
journal, January 1997

Boehly, T. R.; Brown, D. L.; Craxton, R. S.
Optics Communications, Vol. 133, Issue 1-6
DOI: 10.1016/S0030-4018(96)00325-2

In-tank, on-shot characterization of the OMEGA laser system focal spot
conference, March 2019

Waxer, Leon J.; Bauer, Katelynn; Cost, Emil
High Power Lasers for Fusion Research V
DOI: 10.1117/12.2506792

Reduction of laser imprinting using polarization smoothing on a solid-state fusion laser
journal, April 1999

Boehly, T. R.; Smalyuk, V. A.; Meyerhofer, D. D.
Journal of Applied Physics, Vol. 85, Issue 7
DOI: 10.1063/1.369702

Power balancing the multibeam OMEGA laser
journal, January 2018

Sampat, S.; Kosc, T. Z.; Bauer, K. A.
Applied Optics, Vol. 57, Issue 32
DOI: 10.1364/AO.57.009571

National Ignition Facility laser performance status
journal, January 2007

Haynam, C. A.; Wegner, P. J.; Auerbach, J. M.
Applied Optics, Vol. 46, Issue 16
DOI: 10.1364/AO.46.003276

Similar Records in DOE PAGES and OSTI.GOV collections:

In-tank, on-shot characterization of the OMEGA laser system focal spot

Journal Article Waxer, Leon J. ; Bauer, Katelynn ; Cost, Emil ; ... - Proc. SPIE

Direct-drive fusion implosion experiments using the 60-beam OMEGA Laser System require ~1% rms uniformity on target. Measurements from laser diagnostics indicate that beam-to-beam power variation has been sufficiently reduced such that the uniformity nearly meets this requirement; however, experimental results suggest otherwise. To better understand this discrepancy, a full-beam-in-tank diagnostic has been developed to characterize the on-shot, full-energy focal spot of a single beam inside the target chamber using a small sample of the beam from the final optic assembly. In this paper, we describe the diagnostic and present the results of commissioning experiments.
Cited by 2
https://doi.org/10.1117/12.2506792

Full Text Available
Comparison of on-shot, in-tank, and equivalent-target-plane measurements of the OMEGA Laser System focal spot

Journal Article Bauer, Katelynn A. ; Heimbueger, Matthew ; Sampat, Siddharth ; ... - Proc. SPIE

The newly developed full-beam-in-tank (FBIT) diagnostic has the capability to characterize multiple beamlines in the target chamber. In addition to measuring multiple beams, we can obtain measurements of the step-by-step changes to achieve smoothing by spectral dispersion (SSD), the SSD kernel, and SSD synchronization. Since other existing diagnostics are all located upstream of the target chamber, this diagnostic can be used to explore a propagating beam through the final optics assembly. In this work, we investigate current discrepancies between laser diagnostics and experimental results by comparing results of on-shot direct measurements using FBIT and the equivalent-target-plane diagnostic.
Cited by 1
https://doi.org/10.1117/12.2506911

Full Text Available
Design of the OMEGA Laser Target Chamber Tritium Removal System

Journal Article Nobile, Arthur ; Reichert, Heidi ; Janezic, Roger T ; ... - Fusion Science and Technology

Preparations are currently underway at the OMEGA laser at the University of Rochester Laboratory for Laser Energetics (UR/LLE) to conduct direct drive laser implosion campaigns with inertial confinement fusion targets containing deuterium-tritium (DT) cryogenic ice layers. The OMEGA Cryogenic Target Handling System will fill plastic targets with high-pressure DT (150 MPa) at 300 to 500 K, cool them down to cryogenic temperature (<25 K), form the DT ice layer, and transport the targets to the OMEGA laser target chamber. Targets will then be shot with the 60-beam 30-kJ OMEGA laser. A tritium removal system has been designed to remove tritiummore »« less
OMEGA Upgrade preliminary design

Technical Report Craxton, R S

The OMEGA laser system at the Laboratory for Laser Energetics of the University of Rochester is the only major facility in the United States capable of conducting fully diagnosed, direct-drive, spherical implosion experiments. As such, it serves as the national Laser Users Facility, benefiting scientists throughout the country. The University`s participation in the National Inertial Confinement Fusion (ICF) program underwent review by a group of experts under the auspices of the National Academy of Sciences (the Happer Committee) in 1985. The Happer Committee recommended that the OMEGA laser be upgraded in energy to 30 kJ. To this end, Congress appropriatedmore »« less
OMEGA Upgrade preliminary design

Technical Report Craxton, R S

The OMEGA laser system at the Laboratory for Laser Energetics of the University of Rochester is the only major facility in the United States capable of conducting fully diagnosed, direct-drive, spherical implosion experiments. As such, it serves as the national Laser Users Facility, benefiting scientists throughout the country. The University's participation in the National Inertial Confinement Fusion (ICF) program underwent review by a group of experts under the auspices of the National Academy of Sciences (the Happer Committee) in 1985. The Happer Committee recommended that the OMEGA laser be upgraded in energy to 30 kJ. To this end, Congress appropriatedmore »« less

Similar Records

Title: Optical characterization of the on-target OMEGA focal spot at high energy using the full-beam in-tank diagnostic

Abstract

Citation Formats

Comparison of on-shot, in-tank, and equivalent-target-plane measurements of the OMEGA Laser System focal spot conference, March 2019

Experimental investigation of smoothing by spectral dispersion journal, January 2000

The LIL facility quadruplet commissioning journal, June 2006

Direct-drive-implosion experiments with enhanced fluence balance on OMEGA journal, January 2004

Inferred UV fluence focal-spot profiles from soft x-ray pinhole-camera measurements on OMEGA journal, February 2020

Production of high energy, uniform focal profiles with the Nike laser journal, June 1995

In situ characterization of high-intensity laser beams on OMEGA journal, July 2005

Irradiation uniformity for high-compression laser-fusion experiments journal, May 1999

Performance of 1-THz-bandwidth, two-dimensional smoothing by spectral dispersion and polarization smoothing of high-power, solid-state laser beams journal, January 2005

Initial performance results of the OMEGA laser system journal, January 1997

In-tank, on-shot characterization of the OMEGA laser system focal spot conference, March 2019

Reduction of laser imprinting using polarization smoothing on a solid-state fusion laser journal, April 1999

Power balancing the multibeam OMEGA laser journal, January 2018

National Ignition Facility laser performance status journal, January 2007

Comparison of on-shot, in-tank, and equivalent-target-plane measurements of the OMEGA Laser System focal spot
conference, March 2019

Experimental investigation of smoothing by spectral dispersion
journal, January 2000

The LIL facility quadruplet commissioning
journal, June 2006

Direct-drive-implosion experiments with enhanced fluence balance on OMEGA
journal, January 2004

Inferred UV fluence focal-spot profiles from soft x-ray pinhole-camera measurements on OMEGA
journal, February 2020

Production of high energy, uniform focal profiles with the Nike laser
journal, June 1995

In situ characterization of high-intensity laser beams on OMEGA
journal, July 2005

Irradiation uniformity for high-compression laser-fusion experiments
journal, May 1999

Performance of 1-THz-bandwidth, two-dimensional smoothing by spectral dispersion and polarization smoothing of high-power, solid-state laser beams
journal, January 2005

Initial performance results of the OMEGA laser system
journal, January 1997

In-tank, on-shot characterization of the OMEGA laser system focal spot
conference, March 2019

Reduction of laser imprinting using polarization smoothing on a solid-state fusion laser
journal, April 1999

Power balancing the multibeam OMEGA laser
journal, January 2018

National Ignition Facility laser performance status
journal, January 2007