Revision as of 15:01, 23 April 2018

04/12/2018 Fridge Cooldown

The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:

The table's caption
Time	Process	Comment
10:30 am - 2 pm	Cooling down the separator	Both needle valves closed and Separator pump flow constant at ~ 5 slm
2 pm - 5 pm	Nose cooldown to 1.2 K.	The needle valves were opened (both). The roots were on When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly.
5 pm - 10 pm	Thermal equilibrium conditions ~1.9 K.	The bypass valve was closed and the heat exchanger was opened slightly. The roots were off and a secondary small roughing pump was pumping the cryostat space.

@@ Line 1: / Line 1: @@
+= 04/12/2018 Fridge Cooldown =
+The fridge was cool-down starting from room temperature on April 12. The steps that day can be summarized as:
+{| class="wikitable"
+|+ The table's caption
+! Time
+! Process
+!Comment
+|-
+! 10:30 am - 2 pm
+| Cooling down the separator || Both needle valves closed and Separator pump flow constant at ~ 5 slm
+|-
+! 2 pm - 5 pm
+| Nose cooldown to 1.2 K.
+| The needle valves were opened (both). The roots were on  When the temperature in the nose decrease bellow 4 K, the bypass valve was closed and the heat exchanger was opened slightly.
+|-
+! 5 pm - 10 pm
+|Thermal equilibrium conditions ~1.9 K.
+| The bypass valve was closed and the heat exchanger was opened slightly.  The roots were off and a secondary small roughing pump was pumping the cryostat space.
+|}
+[[Image:04-12-2018 magnetT.jpg|500px]]
 = 04/10/2018 Magnet Precool with LN2 =