Apollo, Matt

When we put the north door on HAM4 last week, we noticed that first contact was still on the inside and outside of the viewports. This morning Apollo pulled the two viewports in question off the door (I did particle counts of the cleanroom and of the purge coming out of the chamber through the viewport aperture on the door and all counts zero).

The top gun was used in the removal of the first contact to blow during and after the first contact was peeled. The first contact must of been some of the original first contact and been on there a long time as it took quite a bit of force to "break the seal" to get the first contact to start to peel (it was a pour application of FC on the viewport it appeared).

After peeling I inspected the viewports. The one that came off the centre of the door looks like it has a scrath..and I want to say its on the inside, and its not in the centre but off to one side, perhaps 1-1.5inches long,  but I only had a quick look and pass it off to the experts to do a more detailed look as I didnt have any swabs, etc on me to investigate it. I shoudl of taken a picture. Didnt even think of that I am sorry. In the meantime I asked Apollo to put a blank on that port. The other viewport looked fine and so I informed Apollo to put that one back on in the same spot it came off.

model restarts logged for Tue 29/Jul/2014
2014_07_29 12:05 h1iopsusauxey
2014_07_29 12:06 h1iopsusauxey
2014_07_29 12:07 h1iopsusauxey
2014_07_29 12:08 h1susauxey
2014_07_29 12:10 h1susauxey
2014_07_29 12:34 h1iopsusauxey
2014_07_29 12:40 h1susauxey
2014_07_29 12:42 h1susauxey
2014_07_29 13:11 h1iopsusauxey
2014_07_29 13:28 h1susauxey
2014_07_29 14:08 h1iopsusauxey
2014_07_29 14:45 h1iopsusauxex
2014_07_29 14:46 h1iopsusauxex
2014_07_29 17:11 h1iopsusauxex
2014_07_29 17:12 h1susauxex
2014_07_29 17:13 h1iopsusauxey
2014_07_29 17:15 h1susauxey
2014_07_29 21:42 h1fw0

maintenance day 2.9 testing on sus-aux. Unexpected restart of h1fw0.

Took advantage of Maintenance Tuesday to replace all of the Vacuum Rack UPS Batteries.  This is the first time replacing batteries for these UPS units.  

Attached are damped/undamped spectra of osem signals of HAM3 suspensions (PR2 MC2). No particular concerns 

Matlab TFs are set to run at the X end station overnight as follows:-  

- TMSX (TMTS) M1-M1 undamped TFs

Starting now, and when complete the measurement status will revert to OFF and damping loops will be restored to the ON state.

These measurements have been initiated from the opsws2 workstation.

WP4758. Rolf, Jim and Dave.

We upgraded the following models to branch2.9: h1iopsusauxey, h1susauxey and h1iopsusauxex.

After h1iopsusauxey was upgraded, I did see the ADC error bit in the STATEWORD get set three times in the first 30 minutes. The enhanced ADC diagnostics Rolf put into the /proc status file showed the ADC0 READTIME MAX did exceed the 17uS limit (went to 18 each time). Unfortunately no addition errors were seen for the next 3 hours. We tried the same test on IOP EX, but that did not exhibit the error at all.

So it seems the ADC error is in 2.9 at EY, but is very intermittent. 

I reverted both IOP and user models on h1susaux[ex,ey] back to RCG2.8.4 and concluded the test.

nm

During close-out work on the ETMX chamber, and while waiting for particle counts to drop, I took power spectra up to 50 Hz for both ETMX (QUAD) and TMSX (TMTS) suspensions (n.b. suspensions were still locked).

I observed a higher noise floor, of almost an order of magnitude, for the ETMX L2 (PUM) UL sensor channel (see ETMX_Original.png below).

To help determine if the source of the excess noise resides in-chamber or with the electronics chain I swapped the ETMX L1 and L2 stage in-air field cables at the Satellite Box (H1:SUS_ETMX-17 and H1:SUS_ETMX-17) and re-took the power spectra (see ETMX_Swapped.png below). It can be seen that the excess noise now moves from the L2 stage to L1, thus indicating that the source of the excess noise is down-stream i.e. with the field-cables or in-chamber.

Ideally, the above test should be repeated at on the air side on the vacuum feed-through to eliminate the field cable. However, most likely, this is an in-chamber AOSEM cabling/connector issue.

Sometime between the SUS and ISI payloading mid-week last week the alignment of the ITMy QUAD wandered off.  The ACB install and alignment proceeded late last week.  On Monday (yesterday) we resumed realignment of the ITMy SUS.  This involved the usual many day effort of realigning all 3 stages of sensors during the test mass and CP pointing alignment.  By COB on Monday we had good sensor alignment and good IAS pointing, however we had a strange 2.6Hz peek on V and P DOF TFs.  Overnight TFs confirmed these peeks.  Today, we have again spent all day trying to understand and mitigate crosscoupling of this peek via shifting the sensor mounting box around and realigning the OSEMs each time.  No help.

WED

SUS and ISI Payloaded

Good IAS alignment, Good sensor alignment, Main Chain rubbing

THUR/FRI

ACB Install and alignment

Closed the ring heater.

MON

Main chain rubbing had been alleviated, IAS and sensor pointing ongoing

2.6Hz in some DOF TFs of M0 and R0

TUES AM

Sensor mounting table cloth realigned in an attempt to improve sensor centering along x - pushed towards main chain, all BOSEMs realigned.

Major L1 and L2 OSEM alignment coupled with both chain pointing alignments.

Checked a few flags that possibly were crooked.  None found bad.

No problems with cables, EQ stops or flags found between chains.

2.6Hz peek found to have moved to 2.4Hz.

TUES AFTERNOON

Sensor mounting table cloth realigned in an attempt to change any coupling seen by the sensors to mis-pitched/mis-yawed/mis-rolled top mass flags.  All 12 top BOSEMs realigned.

Tweeked slightly miscentered L1 Upper and Left BOSEM centering.

No problems with cables, EQ stops or flags found between chains.

Opened the ring heater (grasping at straws).

2.4Hz still there on both main and reaction.

TUES LATE PM

Locked ACB with 1 bracket in an attempt to stop what we observed to be a 2-3Hz bounce resonance.

Story TBC...

Data collection expected to last 48-72 hrs during which time the pressure will increase in the X1 BT module -> Expect gauges PT134B, PT144B, PT343B and PT344B to exceed alarm levels -> No action required for these four gauge alarms during this test period

Gary T, Danny S, Matt H, Stuart A

Well was a frustrating day today. We removed the 3 wafers (2 horizontal and 1 vertical) and the vertical optic that was still in chamber, and also put in a 1inch optic (still with its first contact). We gave everything a wipe and then vacuumed everything then wiped again.

Keita asked us to centre the BOSEMs on the TMS with the offsets applied and the TMS damped. And so this is what was done. Keita had a look at what we had done and okayed it.

Counts were still really high after vacuuming so we broke for lunch and during that time we got Jim to unlock the ISI. We wiped again and counts okay, so thought we could start the closing process and started with blowing off quickly the TMS. This put the counts up highish, but figured we would try blowing between the two optics for the 5 minutes agreed upon with Mike L and Norna, let counts settle low and then pull FC. Unfortunately we could never get the counts to go lower than say 400-500 (for 0.3um) with people not moving in the chamber for ~30 mins, and as soon as they did the counts would go up into the 900's-1300's (for 0.3um). We tried wiping floor yet again and couldnt get counts lower. Note: we even have a new BSC door cover on.

So I talked to Calum and we decided that we will just have to go with as low as counts as we can get and just log the counts we have whilst doing the closeout tasks. As its getting on today we decided to stop here, Jeff B is going to come in early and wipe the chamber again one more time...this should give time for everything to settle and then we wil ljsut go for broke with pulling this. I dont think we can get this much better in the near term. I think shows how important that we need to do cleaning on the go everytime anyone is in there.. We are very confident we can get everything done in a couple hours after morning meeting tomorrow though and then that end is done.

PS..Gerado just came and talked ot me and the "stuff" we see on the middle viewport of eastern door is on the middle. We we will paint FC on that tomorrow as well and pull that (before we pull FC on optics)

Quick timeline

Particle counts

In cleanroom start of day

All counts zero (see pic 1)

In chamber start of day

All counts zero (see pic2)

In chamber as removing wafers (see pic 3)

0.3um.....950 counts

0.5um....400 counts

0.7um....270 counts

1.0um....200 counts

2.0um..140 counts

5.0um...60 counts

Pic 4....S/N of the optic put into X end station

Pic 5...vacuuming under the floor boards

In chamber during vacuuming (see pic 6)

0.3um....3050 counts

0.5um....1460 counts

0.7um...950 counts

1.0um....650 counts

2.0 um...400 counts

5.0 um....40 counts

In chamber exiting for lunch..to let counts settle (see pic 7)

0.3um....2310 counts

0.5um...1030 counts

0.7um....570 counts

1.0um...340 cunts

2.0um...240 counts

5.0um....60 counts

1.30pm...in cleanroom after lunch

All counts zero

1.32pm..In chamber after lunch (see pic8)

0.3um...80 counts

0.5um...20 counts

rest zero

1:44pm..blowing TMS optics

1:49pm..finished blowing TMSoptics

Particle counts (see pic 9)

0.3um...940 counts

0.5um...400 counts

0.7um...200 counts

1.0um...130 counts

2.0um...70 counts

5.0um..10 counts

1:50pm...blowing between two optics for 5 mins

Pic 10...Gary blowing between optics

Particle counts end of blowing (see pic 11)

0.3um....1020 counts

0.5um...550 counts

0.7um...300 counts

1.0um...220 counts

2.0um....150 counts

5.0 um...20 counts

1.58pm...starting TMS TF;s

2.15pm..counts still in 400-500's for 0,3um range

2.40pm...talked to Calum about Particle counts....Will go with lowest we have seen (400-500 count range) to be our new "zero" for this chamber this time

2.45pm...counts in 0.3um range back to 600-800 range with little to no movement by guys in chamber

2.52pm..wiping floor again

3.17pm particle counts (see pic 12)

0.3um...1300 counts

0.5um....570 counts

0.7um...370 counts

1.0um..240 counts

2.0um...160 counts

5.0um...60 counts

3.30pm..calling it quits

J. Kissel

Betsy, Travis, and Jason have finished initial alignment of the Reaction Chain on H1 SUS ITMY. Over lunch, I've run a set of DTT transfer functions to confirm we're not rubbing in a way that would affect the IAS assessment. The TFs reveal the chain is free as a bird, so the IAS numbers are legit. Nice work, team!

They're beginning to "payload" the SUS now (add the stiffening sleeve, vibration absorbers, etc.), and we'll take a full set of TFs again tonight, including the Main Chain to confirm all is well.

All scripts and data have been committed to the svn.

Calum, Kate, Rich A, Nichole, Betsy

Reporting for the team last night:

After collecting all of the required equipment, we started the ITMx First Contact cleaning at ~5pm yesterday.  We used the spray cone to apply a nice coating to the CP-AR and then to the ITMx-HR.  When we did the ITMx-HR we had to slide the ACB wedge part way out in order to have the ACB swing back in such a way to not interfere with the spray cone attached to the front of the QUAD structure.  Reportedly there is a new cone somewhere that does not interfere with the ACB fully swung back.  Will continue tracking said cone.  The plan is to clean the chamber and continue with other mechanical closeout items before pulling the FC and closing the chamber door (the typical procedure).

Prior to starting the First COntacting of the ITMx-HR surface, we attached the green lantern fixture and inspected for particulate on the surface of the optic.  A few weeks ago, we used the fixture to spot ~2 particles per sq. inch on this surface.  Since then, much in-chamber activity has taken place.  Yesterday, we spotted ~5-10 particles per sq. inch.  We should inspect after we pull the FC.