Magnet Assembly Clause Samples

Magnet Assembly. The NMR Magnet Assembly consists of a shielded superconducting magnet contained in an enclosure. Although shielded, it is expected that the magnetic field would not be fully contained within the enclosure. Although the residual external field should not represent a health and safety issue, it may extend the working space around the analyzer beyond the perimeter of the analyzer. This presence of this external residual field may negatively affect the performance of the analyzer. For example, if a typical metal laboratory cart were to be rolled within the area of the external residual field, it may cause a perturbation in the field sufficient enough to affect the test results. Validation testing will have to be performed to determine the final effective system perimeter around the analyzer. In order to achieve the necessary magnetic field strength, the magnet consists of a superconducting core. It is expected that supercooling of the magnet will be achieved by immersing it in liquid helium. The supercooled core would then be contained within a liquid nitrogen “shell” for the purpose of reducing the evaporation and subsequent depletion of the more expensive liquid helium. It is expected that replenishment of the liquid nitrogen and liquid helium would nominally be required at two week and 3 month intervals respectively. It is intended that the liquid nitrogen would be replenished by a trained laboratory technician and the liquid helium would be replenished by a factory service technician. It is important that the Magnet Assembly be designed such that the replenishment of the cryogenics can be performed in a safe manner by the appropriate personnel. The NMR Magnet Assembly will be quite heavy and because it must be mounted above the floor in order to provide access to the underside, the center of gravity is also high. This represents a significant safety risk, especially in areas notable for earthquake activity. For this reason, it shall be necessary to secure the NMR Magnet Assembly by bolting it to the floor. The mounting method must also accommodate any necessary features required for leveling.