SuMIRe主焦点摄谱仪（PFS）的可见光摄像机低温恒温器设计和性能
Visible camera cryostat design and performance for the SuMIRe Prime Focus Spectrograph (PFS)
摘要：
我们描述了SuMIRe Prime Focus Spectrograph（PFS）可见光相机低温恒温器的设计和性能。SuMIRe PFS是一种大型多路地面摄谱仪，由四个相同的摄谱仪模块组成，每个模块在主焦点处接收来自2394光纤机器人定位器的大约600根光纤。每个摄谱仪模块具有三个通道，覆盖波长范围为380 nm - 640 nm、640 nm-955 nm和955 nm- 1.26 μ m，每个通道中的色散光由f/1.07真空施密特相机成像。相机非常大，在入口窗口处具有300 mm的通光孔径，质量为$\sim$ 280 kg。在本文中，我们描述了可见光摄像机低温恒温器的设计，并讨论了低温恒温器性能的各个方面。
英文摘要：
We describe the design and performance of the SuMIRe Prime Focus Spectrograph (PFS) visible camera cryostats. SuMIRe PFS is a massively multi-plexed ground-based spectrograph consisting of four identical spectrograph modules, each receiving roughly 600 fibers from a 2394 fiber robotic positioner at the prime focus. Each spectrograph module has three channels covering wavelength ranges 380~nm -- 640~nm, 640~nm -- 955~nm, and 955~nm -- 1.26~um, with the dispersed light being imaged in each channel by a f/1.07 vacuum Schmidt camera. The cameras are very large, having a clear aperture of 300~mm at the entrance window, and a mass of $\sim$280~kg. In this paper we describe the design of the visible camera cryostats and discuss various aspects of cryostat performance.
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