Differences

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--- sshade:databases:bypass:instruments [2018/01/11 21:59] – Olivier Poch
+++ sshade:databases:bypass:instruments [2018/01/12 10:16] (current) – Olivier Poch
@@ Line 1: / Line 1: @@
+===== BYPASS instruments, techniques and cells =====
+=== SCITEAS ===
+{{ :sshade:databases:bypass:sciteas.png?350|Simulation Chamber for Imaging the Temporal Evolution of Analogue Samples}}
+The SCITEAS (//**S**imulation **C**hamber for **I**maging **T**emporal **E**volution of **A**nalogous **S**amples//) facility is an original simulation chamber aiming at studying the temporal evolution of icy analogues (of comets and other small bodies, Mars etc.) under low temperature and low pressure conditions [[http://www.sciencedirect.com/science/article/pii/S0032063315000380|Pommerol et al., 2015]].
+\\
+\\
+**The chamber**
+  * Cylindrical, 30 cm in diameter and 32 cm high
+  * 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<sup>-7</sup> mbar (primary and turbo pumps)
+\\
+**The Imaging System**
+A quartz window on top of the sample enables to monitor the sample surface evolution with a //hyperspectral imaging system// positioned outside the chamber.
+  * **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