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Message ID: 145     Entry time: Thursday, March 12, 2015, 10:51
Author: Isaac Earle 
Category: Standard Operation 
Type: Target 2 
Specific: Target 
Subject: T2-MK2 Pos'n 4 Elevation Measurements 

Elevation measurements of the T2-MK2 target were taken in the hot cell to confirm previous records in preparation for the T2 Protect Monitor adjustment that will take place later this shutdown.  Potentiometer readings were also checked for ladder position 2mm above and below nominal in case we decide to run the target in an offset position again.

 

Entrance Side:

Ladder moved until potentiometer at 16.19kΩ (nominal position 4)
- Measurement on tape: 1838.7mm

At elevation 1836.7mm: 16.04kΩ
At elevation 1840.7mm: 16.27kΩ

 

Exit Side:

Ladder moved until potentiometer at 16.19kΩ
- Measurement on tape: 1837.9mm

At elevation 1835.9mm: 16.04kΩ
At elevation 1839.9mm: 16.29kΩ

 

The elevation measurements at nominal position agree with those taken in May 2014.
The T2-MK2 target is now ready to be returned to the beam line after completion of the M9-T2 work.

 

Keith C. Ng and Isaac Earle both received .02mSv dose during this procedure.

 

 

 

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