Make New Entry, Make Followup Entry
User name brads
Log entry time 15:59:03 on November 04, 2008
Entry number 246678
This entry is a followup to: 246672
keyword=Damage probably occured between 1am--3am, Monday Nov 3Looking at the archiver data, I think the damage occurred between 1am and 3am on Monday morning. This was during the backout of the Moller tune when MCC was having trouble restoring beam to the old position.
Fig. 1 shows the most telling radiation signal (teal) and the target ladder position over the last few days. The ladder position is in purple, with the optics target location at around -5 units. Note the radiation spike in the middle of the frame.
Fig. 2 shows a zoom on the above time frame.
Fig. 3 adds the BPMA/B y-pos variables (green and magenta). There are a
few regions where the BPM positions are well off and the radiation spikes...
Figure 1
Figure 2
Figure 3
