(Gray, Radkins)

BACKSTORY: 

After the major balancing & floating of the HAM6 ISI (due to adding the new OPO to HAM6) last Thurs, we have not been able to isolate HAM6.  The thought is there is a mechanical issue (i.e. cable pulling on system?).  Another symptom (related?) is related to the Capacitive Position Sensors (CPS).  This is relegated primarily to Corner 3's horizontal (H3) CPS; it has a large value on the order of -13000 counts (roughly an order of magnitude more than normal).

YESTERDAY'S ACTIVITIES:

Before working in the chamber Hugh did some electrical checks:

• Power cycled the CPS portion of interface chasis for Corner 3 (which also turns of the sattelite rack) in the CER.
• Reseated cards at the Corner 3 satellite rack (at HAM6)
• Jiggled Corner 3 CPS cables at flange (in-vac & in-air side) at HAM6

Saw some minor change with the cable jiggling at the flange.  But for the most part no change.  This is when Hugh went in to look at possible cables pulling the system & to also clean up/remove the spools of newly-added Squeezer Silver cables.  The Squeezer cables were removed from the ISI and tie-wrapped to the wall tabs of the HAM6 chamber).  Since these cables were pulled off the ISI, we will need to add weight to the table and then re-balance.

After removing the cables above, unfortunately still saw the large H3 CPS values.  So this remains an issue.  This is where we ended the day on Monday.

TO DO LIST:

• Continue to investigate the issue with H3 CPS. 
• Add weight (due to Squeezer cables were pulled off) & rebalance the table.