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An "old" and "obsolete" boiler system was revitalized and an enhanced Steam Lab was established based on that system. In this project, modifications and improvements were made to the facility to establish the revitalized steam lab, which contains a 150 BHP boiler, condenser, steam turbine and generator, dynamometer, and various other pumps, heat exchangers and fluid lines. The working Steam Lab will provide test-bed capability for local companies, with which the project team and help the industry to meet the energy challenge by developing their energy-management plans and utilizing various energy sources efficiently and smartly. It will also be incorporated into the mechanical engineering curriculum at the UL Lafayette thereby substantially enhancing the mechanical engineering program and impacting the engineering education in UL Lafayette. This project was sponsored by the U.S. Department of Energy (DoE) and the Louisiana Department of Natural Resources (DNR) as a part of the Save Energy Now project.

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This paper describes the construction and testing of the Mirror Fusion Test Facility superconducting magnet set. Construction of the first Yin Yang magnet was started in 1978. And although this particular magnet was later modified, the final construction of these magnets was not completed until 1985. When com pleted these 42 magnets weighed over 1200 tonnes and had a maximum stored energy of approximately 1200 MJ at full field. Together with power supplies, controls and liquid nitrogen radiation shields the cost of the fabrication of this system was over S100M. General Dynamics/Convair Division was responsible for the sys tem design and the fabrication of 20 of the magnets. This contract was the largest single procurement action at the Lawrence Livermore National Laboratory. During the PACE acceptance tests, the 26 major magnets were operated at full field for more than 24 hours while other MFTF subsystems were tested. From all of the data, the magnets operated to the performance specifications. For physics operation in the future, additional helium and nitrogen leak checking and repair will be necessary.In this report we will discuss the operation and testing of the MFTF Magnet System, the world's largest superconducting magnet set built to date. The topics covered include a schedule of the major events, sum mary of the fabrication work, summary of the installa tion work, summary of testing and test results, and lessons learned. Schedule of Major EventsFrom early conceptual design to the completion of the plant and capital equipment acceptance tests, the MFTF magnet system required a few months short of 12 years to complete. Starting in mid-1974, several mag net configurations were studied for the next upgrade in the Magnet Mirror Fusion Program at LLNL -the lead laboratory for the US Magnetic Mirror Fusion Program. Once the Yin Yang configuration was picked for a mir ror ratio of two (on-axis mirror field to central field), conceptual studies and cost estimates were started for both superconducting and normal magnet designs. Because of power requirements and costs, the superconducting configuration was chosen. In addition to being a major size step forward in mirror fusion, this decision would allow advancement in the technol ogy of superconductivity to a point approaching the requirements for a full size commercial fusion plant.With the decision to proceed with the supercon ducting magnet approach, much research and development was necessary to ensure that an adequate superconduc tor with sufficient cryogenic stability could be mass produced. Because of this, an increase in the super conducting research activity at LLNL was started in 1975 to develop a high current, cryostatically stable conductor for the pool boiling MFTF Yin Yang magnet. Two designs were carried on for the better part of a year. These were the four-bar conductor (four conduc tors joined together with fins, one of 50% NbTi and 50% copper, the other three 100% copper), and the wrapped conductor (a 50% NbTi conductor wrapped with a Man...

The Axicell MFTF-E magnet system will provide the field environ ment necessary for tandem mirror plasma physics investigation with thermal barriers. The performance ot the device will stimulate DT to achie'v energy break-even plasma conditions. Operation will be with deuterium only. There will be ?4 super conducting coils consisting of ? sets of yin-yang pairs, 14 central-cell solenoids, ? sets of axicell mirror-coil pairs, and ? transition coils between He axicell mirror coil-pairs and the yin-yang coils. This paper describes the pronress in the design and construction of NFTF-B Superconducting Magnet System. FUNCTIONAL RCQUIREMENTS AND COIL CHARACTERISTICSAxicell MFTF-B magnet configuration is chosen over A-Cell MFTF-B [1] configuration because, in axicell, it has higher Q (defined as the ratio of fusion output energy to olasma input heating energy), lower capital cost, and reduced radial transport. The axicell magnets have better geometry in the end-plug region and looks better as a fusion re?clor magnet system. The magnet coil configurations, as shown in Fig. 1, were determined based on the field reouirements over the plasma region and on other requirements, such as the penetration access for the plasma heating heams and the diagnostics and space for cryopumpinc. The magnet array and the profiles of on-axis field are shown in Fig. 1. Table 1 lists the important coil parameters and magnet characteristics. The configuration will accommodate a plasma column at central cell with a 30-cm plasma radijs plus allowance for a 15-cm-thick plasma halo. The anchor cells will be a yin-yang pair with a mirror ratio of 3.0, instfci") of the 2.1 ratio in the original MFTF design. The mirror field will be 3.0 T. The field at the mirror center will be 1,0 T and the mirror-to-mirror length will be 5.1 m. The nn'dplane-to-midplane distance from the east yin-yang pair to the west yin-yanq pair will be 40 m.The axicell plug roils (Al and A2) will generate a P-T mirrur at the inboard and a 12-T mirror at the outboard, with a 4-T field-well between them. The center cell will consist of 14 solenoios spaced 1.25 m apart. These solenoids will produce a uniform axial field, variable up to 1.6 T.