Nuclear Analysis for Near Term Fusion Devices

Sawan, M.E. ; Kulcinski, G.L. ; Henderson, D.L.

关键词: ASPECT RATIO;    BERYLLIUM;    COPPER;    DESIGN;    IGNITION;    MAGNETS;    PERFORMANCE;    PLASMA;    RADIATION EFFECTS;    SHAPE;    SHIELDING;    THERMONUCLEAR REACTORS Burning Plasma;    Fusion Ignition Research Experiment (FIRE);    Magnet Insula;   

DOI  :  10.2172/901591
RP-ID  :  DOE ER54148-F
PID  :  OSTI ID: 901591
Others  :  TRN: US0806201

学科分类：原子、分子光学和等离子物理

美国|英语

来源: SciTech Connect

【 摘 要 】

A Next Step Options (NSO) study was initiated to consider the logical steps that might be undertaken to restructure the U.S. Fusion Sciences Program. Most of the effort was concentrated on designing the Fusion Ignition Research Experiment (FIRE), which is in the preconceptual design phase. It utilizes 16 cryogenically cooled wedged copper TF coils with beryllium copper in the inner legs and OFHC copper in the outer legs. We provided significant contributions in the areas of neutronics, shielding and activation analyses. The design went through different changes. Early in the year 2002 the baseline design changed from a major radius of 2 m to a major radius of 2.14 m and an aspect ratio of 3.6. In addition the fusion power during the DT pulses changed from 200 MW to 150 MW. We spent significant part of the effort calculating the nuclear performance parameters for the final baseline design. While pulses producing a total of 5 TJ of DT fusion energy and 0.5 TJ of DD fusion energy were considered in the previous designs, a detailed experimental plan was developed that results in higher total fusion energy. We assessed the impact on the peak magnet insulator dose. Multi-dimensional calculations were performed also to determine the impact of plasma shape and profile on he peak radiation effects in the TF coils. We performed multi-dimensional calculations for one of the most critical diagnostics ports to assess streaming and determine the nuclear environment at the sensitive components. The radwaste level and volume was quantified for the different components of FIRE.