Friday, May 23, 2014

Lab Book 2014_05_22 Logistics and the Water Chiller

Lab Book 2014_05_22     Hamilton Carter               

Summary
Worked a little bit on experiment planning today.  Most of the rest of the day was spent in meetings.  What time was left was spent preparing the water circulation system for the magnet power supply and the magnet.

Water Chiller
Specifications
Capacity:  8 gpm at 60 psi maximum pressure

Reservoir volume:  1.67 gallons


Drained the pipes heading into the sink area. Working on replacing the after filter once I track down a filter wrench.  



The cooling water will eventually wind up in the magnet power supply shown below.  All the large black tubes carry cooling water.



Magnet Requirements
Cooling:  2 GPM at 40 PSI
Temperature Rise:  20 C average

Magnet Power Supply Requirements
Cooling: 0.5 GPM at 40 PSID nominal
Output: 50 A at 40 V DC

The above specification are to be copied to a central specifications and status page to make them easier to find and track.

Experiment Background Data
Magnetic fields affect the perfromance of photomultiplier tubes like the one used in the scintillation detector.  Background spectrums will be collected for the slow and fast magnets being operated in the same mode they will be operated in the experiment, but with no sample present.  This should allow us to subtract off the effects due to just the magnets.






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