Reports until 15:56, Monday 18 June 2012
H1 FMP
jodi.fauver@LIGO.ORG - posted 15:56, Monday 18 June 2012 - last comment - 15:25, Tuesday 19 June 2012(3160)
HAM5/6 ICC
Report includes work from Friday, 15 June, since I did not alog that day.
On Friday, brushing and first vacuum in HAM6 (The chamber formerly known as HAM5)were completed. Today, the crew worked on wipe down which took most of the day (that is much longer than it usually takes to wipe down a HAM). The chamber did not look much better after wipe down than it did when cleaning started so Bubba and I asked John to come out and have a look. The crew took some pix  including a close-up that shows an "orange peel" surface that appears to retain quite a lot of the original oxide(See below). Second vacuum was completed just prior to end of shift. John asked me to let Rai and Mike Z. know what we have found so that they can weigh in.
Images attached to this report
Comments related to this report
jodi.fauver@LIGO.ORG - 15:25, Tuesday 19 June 2012 (3172)
Below is Rai's response to the reported condition of HAM6 interior.
"I don't know what to make of these surfaces. It looks as though they were heated by welding and then quenched while still fluid. I don't think you can do anything about the surface but I also suspect they are not a major particle source."