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Missouri University of Science and Technology Nuclear Reactor
The Missouri University of Science and Technology Nuclear Reactor (MSTR or Missouri S&TR) is a pool-type nuclear reactor operated by the Missouri University of Science and Technology (Missouri S&T). It first achieved criticality in 1961, making it the first operational nuclear reactor in the state of Missouri. Missouri S&T operates this reactor for training, education, and research purposes.
==Specifications==
The reactor core is situated inside a standing pool of high-purity light water on a grid plate suspended from a movable rail bridge. The pool holds of this water in a concrete casing that is at the base with a depth of . The approximately 19 fuel elements contain between nine to 18 low-enriched uranium fuel plates. The reactor has a maximum power output of 200 kilowatts. This is all thermal energy, and none of it is used to make electricity.〔(【引用サイトリンク】title=General Facts and Information about Missouri S&TR )〕
The reactor uses a total of four control rods. Three of these control rods are used for coarse power control and emergency SCRAM shutdowns, and utilize a combination of stainless steel and boron. The other control rod is used for fine power control, and simply uses stainless steel.〔
The building houses several experimental facilities. These facilities are used for research and for classroom lab activities. A thermal column, consisting of a block of graphite, provides a source of slow neutrons. A diameter aluminum tube, called a beam port, can be positioned between the reactor core and an experimental area in the ground floor of the reactor building, allowing irradiation of a sample with higher energy neutrons. Other facilities, called rabbits, are used to pneumatically inject a sample directly into the core of the reactor for a specified amount of time. One of the rabbit facilities is lined with cadmium in order to stop low-energy neutrons while allowing bombardment of the sample with high-energy neutrons.〔(【引用サイトリンク】title=Missouri S&T Nuclear Reactor )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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