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Message ID: 154     Entry time: Thu Oct 8 09:39:52 2009
Author: Damien Gallop 
Type:  
Category:  
Subject: CSB Development with MCIS 

Friedhelm and Marco have requested 20Ne2+ from the Supernanogan, and plan to bring up the same from the CSB today. I am beginning MCIS bias conditioning. Goal: 24kV, maybe 25. Last save: 091008_0933.snapiosfc6

Later... Conditioning completed to 26kV. Set up a 20Ne2+ tune. It's largely a manual operation. Q3 off in keeping with the failure that occurred during the Mg run a while back.

Still later...We had a PV1 trip somewhere around 11am. That set us back apiece. Finally, done. Hand over to Sophia around 13:30. Snap: 091008_1325.snapiosfc6

Two notes to mention:

1. We fitted ferrite bead cores to all of the CANbus cables inside the IOS rack, as well as a couple at the Philtek separator power supply. We did this sequentially, observing CANbus cards on unfitted cards trip while the others stayed up, each time there was a significant bias spark. Right now the IOS CANbus diagnostics panel is all green, something I have not seen for a while.

2. As noted above, MCIS:PV1 tripped during our setup. We didn't notice until bias trips became unusually frequent without provocation. We happen to have been running emittance scans at the time, and could not account for an increasingly worse triangular shape to the emittance plot. Now we will recognize that shape as an indicator of a vacuum condition. I will paste them below later.

 

Attachment 1: MCIS_HV_Conditioning.png  118 kB  Uploaded Thu Oct 8 17:14:57 2009  | Show | Hide all
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