| Autor: |
Stoeckl, C., Boni, R., Ehrne, F., Forrest, C. J., Glebov, V. Yu., Katz, J., Lonobile, D. J., Magoon, J., Regan, S. P., Shoup III, M. J., Sorce, A., Sorce, C., Sangster, T. C., Weiner, D. |
| Předmět: |
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| Zdroj: |
Review of Scientific Instruments; May2016, Vol. 87 Issue 5, p053501-1-053501-6, 6p, 4 Diagrams, 4 Graphs |
| Abstrakt: |
A next-generation neutron temporal diagnostic (NTD) capable of recording high-quality data for the highest anticipated yield cryogenic deuterium-tritium (DT) implosion experiments was recently installed at the Omega Laser Facility. A high-quality measurement of the neutron production width is required to determine the hot-spot pressure achieved in inertial confinement fusion experiments—a key metric in assessing the quality of these implosions. The design of this NTD is based on a fast-rise-time plastic scintillator, which converts the neutron kinetic energy to 350- to 450-nm-wavelength light. The light from the scintillator inside the nose-cone assembly is relayed ~16 m to a streak camera in a well-shielded location. An ~200× reduction in neutron background was observed during the first high-yield DT cryogenic implosions compared to the current NTD installation on OMEGA. An impulse response of ~40 ± 10 ps was measured in a dedicated experiment using hard x-rays from a planar target irradiated with a 10-ps short pulse from the OMEGA EP laser. The measured instrument response includes contributions from the scintillator rise time, optical relay, and streak camera. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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