Report on the B-Fields at NIF Workshop Held at LLNL October 12-13, 2015

Technical Report · Sun Dec 13 00:00:00 EST 2015

DOI:https://doi.org/10.2172/1237567· OSTI ID:1237567

Fournier, K. B. ^[1]; Moody, J. D. ^[1]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

A national ICF laboratory workshop on requirements for a magnetized target capability on NIF was held by NIF at LLNL on October 12 and 13, attended by experts from LLNL, SNL, LLE, LANL, GA, and NRL. Advocates for indirect drive (LLNL), magnetic (Z) drive (SNL), polar direct drive (LLE), and basic science needing applied B (many institutions) presented and discussed requirements for the magnetized target capabilities they would like to see. 30T capability was most frequently requested. A phased operation increasing the field in steps experimentally can be envisioned. The NIF management will take the inputs from the scientific community represented at the workshop and recommend pulse-powered magnet parameters for NIF that best meet the collective user requests. In parallel, LLNL will continue investigating magnets for future generations that might be powered by compact laser-B-field generators (Moody, Fujioka, Santos, Woolsey, Pollock). The NIF facility engineers will start to analyze compatibility of the recommended pulsed magnet parameters (size, field, rise time, materials) with NIF chamber constraints, diagnostic access, and final optics protection against debris in FY16. The objective of this assessment will be to develop a schedule for achieving an initial Bfield capability. Based on an initial assessment, room temperature magnetized gas capsules will be fielded on NIF first. Magnetized cryo-ice-layered targets will take longer (more compatibility issues). Magnetized wetted foam DT targets (Olson) may have somewhat fewer compatibility issues making them a more likely choice for the first cryo-ice-layered target fielded with applied Bz.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 1237567
• Report Number(s): LLNL-TR-680496; TRN: US1600524
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
MAGNETIC FIELDS
MEETINGS
LAWRENCE LIVERMORE NATIONAL LABORATORY
US NATIONAL IGNITION FACILITY
MAGNETS
TEMPERATURE RANGE 0273-0400 K
COMPATIBILITY
FOAMS
PULSE RISE TIME
CAPSULES
EVALUATION
ICE
PULSES
LASER TARGETS
OPERATION
OPTICS
SCHEDULES
INERTIAL CONFINEMENT
DIRECT DRIVE ICF