title: Development of the large neutron imaging system for inertial confinement fusion experiments.
abstract: Inertial confinement fusion (ICF) requires a high resolution (~10 μm) neutron imaging system to observe deuterium and tritium (DT) core implosion asymmetries. A new large (150 mm entrance diameter: scaled for Laser MégaJoule [P. A. Holstein, F. Chaland, C. Charpin, J. M. Dufour, H. Dumont, J. Giorla, L. Hallo, S. Laffite, G. Malinie, Y. Saillard, G. Schurtz, M. Vandenboomgaerde, and F. Wagon, Laser and Particle Beams 17, 403 (1999)]) neutron imaging detector has been developed for such ICF experiments. The detector has been fully characterized using a linear accelerator and a (60)Co γ-ray source. A penumbral aperture was used to observe DT-gas-filled target implosions performed on the OMEGA laser facility. [T. R. Boehly, D. L. Brown, R. S. Craxton, R. L. Keck, J. P. Knauer, J. H. Kelly, T. J. Kessler, S. A. Kumpan, S. J. Loucks, S. A. Letzring, F. J. Marshall, R. L. McCrory, S. F. B. Morse, W. Seka, J. M. Soures, and C. P. Verdon, Opt. Commun. 133, 495 (1997)] Neutron core images of 14 MeV with a resolution of 15 μm were obtained and are compared to x-ray images of comparable resolution.
authors.affiliation: CEA, DAM, DIF, F-91297 Arpajon, France. tony.caillaud@cea.fr
authors.forename: T
authors.initials: T
authors.lastname: Caillaud
authors.forename: O
authors.initials: O
authors.lastname: Landoas
authors.forename: M
authors.initials: M
authors.lastname: Briat
authors.forename: S
authors.initials: S
authors.lastname: Kime
authors.forename: B
authors.initials: B
authors.lastname: Rossé
authors.forename: I
authors.initials: I
authors.lastname: Thfoin
authors.forename: J L
authors.initials: JL
authors.lastname: Bourgade
authors.forename: L
authors.initials: L
authors.lastname: Disdier
authors.forename: V Yu
authors.initials: VY
authors.lastname: Glebov
authors.forename: F J
authors.initials: FJ
authors.lastname: Marshall
authors.forename: T C
authors.initials: TC
authors.lastname: Sangster