== P1.6	Cool down the cryostat  == 
•	**Phase**		:	1  
•	**Status**		: 	Draft	 
•	**Category**		: 	Installation, integration, verification (C1)				
•	**Recurrence**	: 	once
•	**Duration**		: 	8 hour(s)
**Description**
•	Cooldown the cryostat.
**Prerequisites**
•	SHARK-NIR connected to LBT network.
•	Electronics cabinets on.
•	Needs vacuum pumping at the beginning (vacuum pressure of 10e-5 is good, but the required amount is 10e-3 only.)
•	Liquid nitrogen pumped?
**Procedure**
•	Run the cryostat cooling down sequence
•	Check how the system is performing every 30 minutes
**Success criteria**
•	Cryostat cooled down without any issues.
•	The temperature at the detector is stable at 77K ?
**Notes**
**LBTO support**
•	Liquid Nitrogen refill. Note that we do not mention about Liquid Nitrogen refill in any other place. This has to be done periodically every 24 hours.
**Associated SHARK-NIR personnel**
•	JF, LM, MdP, MM(from AZ)
**Date performed and by whom**