Jeremy B, Stuart A, Jeff K, Arnaud, Jeff B, Matt H, Apollo, Richard M

Success....HAM2 closed up :-)

Quick rundown of events. 

Entering HAM2 straight after doing door work on HAM3 and the particle counts were zero. We had some troubles with PRM showing signs of rubbing overnight so we looked at this first. I didnt find anything glaring but saw a couple stops kinda close. We backed these off ran another set of TFs and got a clean bill of health. Then to save time later we centered all ther OSEMs on all four suspensions on all stages. After this I locked all four HXTs's to get ready for FC pull

Jeff B went in and did a quick last wipe down, put in wafer and monitor optic, removed optics/wafers that were still in chamber, etc. We were all straged to pull FC but couldnt get low particle counts. People were working in BSC's so asked the to stand down to let the particle counts drop. 

After a quick lunch to let the particle counts settle, it was all systems go. On the way out we bumped into Mike Landry et. al. who had been doing tests with the large optics/top gun. I am sure he will write a report on his work but he indicated it took ~9mins for the fields to drop. Thus we decided we should blow the smaller optics for 5mins continuously with the top gun after FC pulled. As I was worried about the pony sized bottles running out we dragged a large cylinder out there for the top gun. 

Particle counts showed us good to go and so we pulled PR3, then MC1 then PRM FC. I went for MC1 now due to the awkwardness of having to unlock that suspension and how have to get on the table to do so. And I didnt want to do this with a half unlocked ISI. I inspected each optic for particulate and Arnaud/Stuart have a log of what I saw (which they will post). We also pulled the FC on the moitor optic. After I reminded myself about 50 times about it :-). We actually had to pull FC twice on it as after I pulled the outer layer, we saw there was still FC on the backside, so had to remove optic to pull backside FC and put optic back. Afte unlocking those three suspensions, TFs were taken on all three by Jeff K/Arnaus and given the all clear. Once the all clear given, the ISI was unlocked on east side and door went on. 

Whilst door being put on on east side I pulled the FC on the MC1 suspension (particle counts were low), and unlocked the suspension. We found we had to change some of the OSEM positions on the three stages.  TF's were taken on this suspension and given the all clear. Whilst TFs were being taken, Richard M transitioned us to laser hazard, and I visually inspected the ISS array cables one last time and they all looked plugged in. 

Once TF's were given the okay, the offset settings for the MC mirrors for when we flashed the mode cleaner successfully in the past were applied and the mode cleaner flashed right away. YES.

ISI on west side unlocked and door went on :-) :-)

Stuart/Arnaud have a detailed log of particle counts/timeline/particles per square inch on the optic which will post to this log

Pic: The HAM closeup crew. Thankyou to all who have helped get LHO to this point. Its amazing to be to this point and when we had schedulded it