| 摘要 |
A white beam slit. The embodiment of this unit consists of vertical and horizontal slit mechanisms, a vacuum vessel which houses them, stepper motors, limit switches, electrical connections for a drain current measurement system and a stand for the vacuum chamber to attach to. For the base design, the fully scanable aperture can be up to 35 mm square with a maximum aperture of 50 mm square. For custom designs, the aperture can be significantly larger. A cooling assembly is incorporated within to maintain temperature of moveable slit components.
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