HAM9--->HAM8 Contamination Inspection

I got into the chamber about 11 am and exited at about 12:15. I took 8 samples (7 samples of large particles, 1 small of fine particulate) using the new collection kit, which worked well for the large particles. My overall impression is that this section of beamtube is not as "dirty" for large particulate as the HAM3-->HAM2 run: Large particles found in 3 sections in HAM9-->HAM8 vs multiple large particles found in all but one of the sections in the HAM3-->HAM2 run and less fine particulate on overhead nozzles in HAM9-->HAM8 vs lots of fine particulate (enough to show up on glove with light swipe)on overhead nozzles in HAM3-->HAM2. See pix below. The samples will be sent to CIT for characterization.

Robert was getting ready to go in just as I was coming out so we'll see what he finds.

H1 Input Beamtube Photos:

- Jodi, Cheryl

Last Thursday (Dec 6) Jodi and I inspected the H1 input beamtube.  Pictures attached show that we found white powdery stuff (HAM3 table, beam tube, MC2 cage), white fuzz (beamtube), part of a latex glove (baffle), fibers, and uniform particulate on the overhead nozzles (picture of gloved finger shows what came off with a swipe).  

MC1 TFs again

Mark B.

Starting TFs on MC1 following the fix.

Mark B.

Data taken, damping restored. TFs look clean.

HAM3-ISI - Locked

JimW, HugoP,

HAM3-ISI is locked.

plots of dust counts

Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot from approximately 6 PM Dec. 10 to 6 PM Dec. 11. Also attached are plots of the modes to show when they were running/acquiring data.

HAM2-ISI - Mechanical Work

HughR, HugoP,

Installed the TMDs on HAM2-ISI.
Corner 1: TMD S/N 16
Corner 2: TMD S/N 17
Corner 3: TMD S/N 18

We also started payloading the ISI. We bolted a mass stack of 200lbs (4x50lbs) to account for the absence of PR3. 34lbs are still needed on that stack to achieve PR3's mass. We might do it with wall masses as it is easier to secure them to the ISI.

plots of dust counts

Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot from approximately 6 PM Dec. 7 to 6 PM Dec. 9. Also attached are plots of the modes to show when they were running/acquiring data.

problem with control room wall clocks

During the day it was noticed that the two wall clocks in the control room would reset themselves, either by showing all dashes, or by showing all eights. By late afternoon we noticed that the UTC time was one second in th future while the local time agreed with the front panel of the NTP server. We power cycled the NTP server and then soft reset the UTC clock and all systems now agree with each other.

The cause of the glitching is still not clear, please email me if you notice any clock problems.

Maintenance summary

MX rack rebuild. WP#3600

We powered down the foundry rack in the MX mid station to relocate it. We also installed new fiber optics cables and replaced some of the ethernet cables. The MX vacuum and FMCS channels were unavailable during this downtime, which was from 11:00am to 12:18pm local time.

H1DAQ h1ldasgw0 upgrade to Sol11. WP#3601

The primary LDAS QFS gateway machine for the H1 DAQ was upgraded to solaris 11.0 by Dan this afternoon. There were no frames written by h1fw0 between the times

local time	GPS time
14:04	1039298656
16:10	1039306208

For data between these times,  please use h1nds1 instead of h1nds0.

EPICS Gateway reboot.

After the reconnection of MX, the EPICS gateways would not reconnect and would periodically freeze. The cdsegw0 machine's console was showing multiple CPU lock-out errors, and I could not restart the machine from the console or ssh login. So I had to reset the computer using the front panel switch. It had been running for more than 365 days and performed a disk system check.

I then restarted all the gateways except any related to the H2 system. This means that the H2DAQ does not have access to any IOC outside of the H2 FE LAN, i.e. no vacuum or fmcs data. After 3 hours of running we are not seeing any processor creep on the gateways, normally they consume increasing cpu time after running for a while. Perhaps the reduced processor loading has fixed this problem.

plots of dust counts

Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot from approximately 6 PM Dec. 6 to 6 PM Dec. 7. Also attached are plots of the modes to show when they were running/acquiring data.

Pumping the combined volumes of the YBM with the Vertex (minus HAM1, 2 and 3) in Pause

Closed the O-ring valves and the gate valves @ the turbos overnight, pumping will continue tomorrow morning.

Ops day summary

• UniFirst, Praxair, Paradise water onsite
• Y arm was swept
• Kyle working on crane by BSC2 and 3
• Dave and Jim working on network at MX
• Kyle pumping down BSC1 for oplev testing
• Thomas at BSC1 working on oplevs

MC1 Blade Tip EQ stops rattled down and are touching

After Mark posted the MC1 and MC3 plots today (

http://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=4888), I went in and immediately found the offenders - all 4 of the horribly trapped blade tip stops on the intermediate mass were touching.  I sepent some time trying to free them to no avail and decided to come find Cheryl before proceeding and likely misaligning various targets around the HAM2 table.  We agreed that I will disassemble the top 3 BOSEMs and flag mounts to free up the screws in the morning.  IO will then need to realign MC1 and we'll re-run TFs.  An inspection of the same MC3 screws showed they were not touching the blades although were not all necessarily at the spec 0.75mm gap setting (hence the clean TFs there).

Diode room temperature swings

The AC unit in the H1 diode room has been cycling off an on about every 50 minutes resulting in a 5 degree temperature swing in the room, from 70 F to 65 F. This may be due to the system being underloaded, and the minimum amount of cooling the unit can supply is pushing the room to 65 F before it turns back off. This unit ties into the AC units in the H1 electronics room, half of which happened to be off. Yesterday Richard brought them back up, and this appears to have created enough of a load on the system to keep the diode room a little more stable, but it still is experiencing temperature swings.

BSC5 ICC

The vacuum brush was retrieved from clean and bake this morning so that first vacuum could begin. First vacuum was completed and the floor replaced. Wipe down was started.

PR3 damped

Mark B.

(This work was mostly done Friday 12/7 but I wanted to check a few things before posting.) 

After the M3UL OSEM was sorted out (see 4840), I went on to get all the matrices and settings checked out and the damping working. I ran prepare.m to be sure all the filters were loaded. I entered all the M1/M2/M3 OSEM2EUL and EUL2OSEM values from the output of make_sushlts_projections.m. I set SENSALIGN and DRIVEALIGN to the identity matrix. I set the signs in M1 COILOUTF to give +ve sensor response for +ve offset. The final values were -1, -1, +1, +1, -1, +1. This agrees with the settings previously used on the triples test stand but differs in SD from E1100109-v2. I set the signs in M2 and M3 COILOUTF per E1100109-v2. I found by trial and error a set of damping gains that gave stable damping, but these can probably be improved: -0.5, -2, -1, -0.02, -0.01, -0.04.

Mark B.

According to Jeff B, the apparent sign flip for SD is expected - the magnets are put on per E1100109-v2 but the OSEM is on the opposite side for HLTS (the right as viewed from the back), so it sees the opposite sign of magnet.

dust monitors

The dust monitor at location 8 in the LVEA, labeled S, gave a calibration warning and was turned off. This was in the small clean room between HAM 2 and 3 with the auxiliary optics. Today I removed the dust monitor at location 1 in the end Y VEA labeled L and replaced S with it.

Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot from approximately 6 PM Dec. 5 to 6 PM Dec. 6. Also attached are plots of the modes to show when they were running/acquiring data.