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sshade:databases:bypass:instruments [2018/01/11 21:45] – Olivier Poch | sshade:databases:bypass:instruments [2018/01/12 10:16] (current) – Olivier Poch | ||
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+ | ===== BYPASS instruments, | ||
+ | |||
+ | === SCITEAS === | ||
+ | {{ : | ||
+ | The SCITEAS (// | ||
+ | \\ | ||
+ | \\ | ||
+ | **The chamber** | ||
+ | |||
+ | * Cylindrical, | ||
+ | * Ice samples several centimeters large and thick can be placed inside | ||
+ | * Cooling by circulation of liquid nitrogen in a shroud around the sample (about -100°C) | ||
+ | * Vacuum down to about 10< | ||
+ | \\ | ||
+ | **The Imaging System** | ||
+ | |||
+ | A quartz window on top of the sample enables to monitor the sample surface evolution with a // | ||
+ | * **Tunable monochromatic light source**: | ||
+ | * light from a 100 W Quartz Tungsten Halogen lamp (Oriel 7340) | ||
+ | * dispersed and filtered by a Oriel MS257 monochromator producing the desired monochromatic light from 0.4 to 2.4 µm | ||
+ | * focused on a fiber bundle made of 37 Optran WF fibers (Ceramoptec) to illuminate the sample through the window (or with the chamber open) | ||
+ | |||
+ | * **Two cameras** on top of the chamber: | ||
+ | * a visible camera (0.38-1.08 µm): 1.4-Megapixel scientific-grade camera (model TSI 1500M-GE from Thorlabs) equipped with a 1392x1040 CCD sensor | ||
+ | * a near-infrared camera (0.85-2.4 µm): Xeva-2.5-300 from Xenics equipped with a 320x256 pixels HgCdTe (MCT) detector cooled by a four-stage Peltier element | ||