| Title: |
Development of a bright MeV photon source with compound parabolic concentrator targets on the National Ignition Facility Advanced Radiographic Capability (NIF-ARC) laser |
| Authors: |
Kerr, S. M.; Rusby, D.; Williams, G. J.; Meaney, K.; Schlossberg, D. J.; Aghedo, A.; Alessi, D.; Ayers, J.; Azhar, S.; Aufderheide, M. B.; Bowers, M. W.; Bude, J. D.; Chen, H.; Cochran, G.; Crane, J.; Nicola, J. M. Di; Fittinghoff, D. N.; Fitzsimmons, P.; Geppert-Kleinrath, H.; Golick, B.; Grim, G. P.; Haid, A.; Hamamoto, M.; Heredia, R.; Hermann, M.; Herriot, S.; Hill, M. P.; Hoke, W.; Kalantar, D.; Kemp, A.; Kim, Y.; LaFortune, K.; Lemos, N.; Link, A.; Lowe-Webb, R.; MacPhee, A.; Manuel, M.; Martinez, D.; Mauldin, M.; Patankar, S.; Pelz, L.; Prantil, M. A.; Quinn, M.; Siders, C. W.; Vonhof, S.; Wegner, P.; Wilks, S.; Williams, W.; Youngblood, K.; Mackinnon, A. J. |
| Contributors: |
Lawrence Livermore National Laboratory |
| Source: |
Physics of Plasmas ; volume 30, issue 1 ; ISSN 1070-664X 1089-7674 |
| Publisher Information: |
AIP Publishing |
| Publication Year: |
2023 |
| Description: |
Compound parabolic concentrator (CPC) targets are utilized at the National Ignition Facility Advanced Radiographic Capability (NIF-ARC) laser to enhance the acceleration of electrons and production of high energy photons, for laser durations of 10 ps and energies up to 2.4 kJ. A large enhancement of mean electron energy (>2 ×) and photon brightness (>10×) is found with CPC targets compared to flat targets. Using multiple diagnostic techniques at different spatial locations and scaling by gold activation spatial data, photon spectra are characterized for Ephoton=0.5–30 MeV. Beam width and pointing variations are given. The efficient production of MeV photons at Ilaser≈2×1018 W/cm2 with CPCs is observed, with doses of >10 rad in air at 1 m for Ephoton>0.5 MeV; these exceed those previously reported with laser-driven sources. Using this source, sub-mm resolution radiographs are generated through large areal density radiograph objects. These results are promising for the development of bright MeV x-ray and particle sources on Petawatt class laser systems. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1063/5.0124539 |
| DOI: |
10.1063/5.0124539/16664130/013101_1_online.pdf |
| Availability: |
https://doi.org/10.1063/5.0124539; https://aip.scitation.org/doi/am-pdf/10.1063/5.0124539; https://pubs.aip.org/aip/pop/article-pdf/doi/10.1063/5.0124539/16664130/013101_1_online.pdf |
| Rights: |
https://publishing.aip.org/authors/rights-and-permissions |
| Accession Number: |
edsbas.C8A826E |
| Database: |
BASE |