The burning process of high density (about 1018cm-3), high temperature (tens to hundreds of keV) plasma trapped by a high mirror-like magnetic field in a Compact Magnetic Fusion (CMF) device is numerically investigated.. The initial high density and high temperature plasma in the CMF device is produced by ultrashort high intensity laser beam interaction with clusters or thin foils, and two fuels, D-T and p-11B are studied. The spatio-temporal evolution of D-T and p-11B plasmas, the production of alphas, the generated electric fields and the high external applied magnetic field are described by a 1-D multifluid code. The initial values for the plasma densities, temperatures and external applied magnetic field (about 100 T) correspond to high β plasmas. The main objectives of the numerical simulations are: to study the plasma trapping, the neutron and alpha production for both fuels, and compare the effect of the external applied magnetic field on the nuclear burning efficiency for the two fuels.. The comparisons and the advantages for each fuel will be presented. The proposed CMF device and the potential operation of the device within the ELI-NP pillar will be discussed.
A. Rousseau, S. Darbon, P. Paillet, S. Girard, J. L. Bourgade, M. Raine, O. Duhamel, V. Goiffon, P. Magnan, A. Chabane, P. Cervantes, M. Hamel, J. Larour
Estimating the vulnerability is a key challenge for plasma diagnostics designed to operate in radiative background
associated with megajoule class laser facilities. Since DT shots at OMEGA laser facility reproduce the perturbing source
expected during the first 100 nanoseconds of a typical DT shot realized at National Ignition Facility (NIF) and Laser
MegaJoule facility (LMJ), vulnerability of diagnostic elements such as optical relays or optical analyzers were
experimentally studied and, if necessary, hardening approaches have been initiated to authorize their use at higher
radiative constraints. Other facilities such as nuclear reactor or accelerator have been also used to estimate vulnerability
issues as radiation induced emission of glasses or damage in multilayer coatings.
The Laser MegaJoule (LMJ) facility will host inertial confinement fusion experiments in order to achieve ignition by
imploding a Deuterium-Tritium filled microballoon [1]. In this context an X-ray imaging system is necessary to diagnose
the core size and the shape of the target in the 10-100 keV band. Such a diagnostic will be composed of two parts: an X-ray
optical system and a detection assembly. The survivability of each element of this diagnostic has to be ensured within
the mixed pulse consisting of X-rays, gamma rays and 14 MeV neutrons created by fusion reactions.
The design of this diagnostic will take into account optics and detectors vulnerability to neutron yield of at least 1016. In
this work, we will present the main results of our vulnerability studies and of our hardening-by-system and hardening-by-
design studies.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.