[Halld-target] Cryomech PT415 pulse tube refrigerator

[Christopher Keith]

Here's a link to the pulse tube refrigerator's manual:
http://www.cryomech.com/CRYOREFRIGERATORS/NEW%20Model%20PT415%20Manual%2011-06-06.pdf

I haven't read it all, but here are some notes:
The compressor requires 460VAC 3 phase, 20 Amp.  It weighs about 460 
lbs.  Dimensions:  24 x 23 x 36 in.
Cooling water is nominally 3 gpm at 80F.

The refrigerator weighs 55 pounds.  Overall height is about 30 inches.  
It has a 7.35" diameter vacuum flange.
The first stage cold head is 5.1" in diameter and has a 4.75" bolt 
circle (M5 screws).  It can support 22 pounds.
The second stage cold head is 3.7" in diameter and  has a  3.4" bolt 
circle (M5 screws).  It can support 11 pounds.

> An unloaded PT415 Cryorefrigerator with no additional mass on the heat 
> exchangers will cool down to 4K in approximately 60 minutes. When 
> additional mass is attached to either stage, the cool down time will 
> increase.
> In general a minimum no-load 1st stage temperature of approximately 
> 32K and a 2nd stage temperature of 2.8K should be attained.  These 
> temperatures will vary depending on the quality of the vacuum, the 
> quality of the super-insulation, and the heat load brought in by the 
> instrumentation leads.
The compressor has both a serial port and a digital I/O port for remote 
monitoring and control.
> RS232/488 Port
> The RS232/488 port can be used to remotely monitor and control the 
> compressor system as well as access all stored data.
> System I/O Port
> The 15 pin digital I/O connector, with selected input controls and 
> relay outputs, provides limited monitoring and control of the 
> compressor system.

Chris

-- 
______________________________________________________________________
Christopher D. Keith
Jefferson Lab, MS 12H                   email: ckeith at jlab.org
12000 Jefferson Ave.                    ph:  757-269-5878
Suite #6				fax: 757-269-5235
Newport News, VA 23606
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