With the removal of all H2 electronics and cable trays, moved the kill button from the H2 PSL area to the Squeezer setup area. Tested all five of the kill buttons to ensure they remove power from the five locations lasers can be plugged into. They are TCS X,Y, Diode Room, 4kPSL, Squeezer set up area. Everything worked as designed. Will have to repeat this process when I install a power outlet by Ham4 for the squeezer install.
Card access to the LVEA via the High Bay/Large Equipment Access door should (in theory) be restored. See Richard if you continue to have issues with that particular door.
Rolf, Alex, Keith, Jim, Dave, Richard, Cyrus The aligo CDS control room systems and the H2 front end systems were installed during the week of Nov 9th - Nov 12th. Details can be viewed on the network drawing D1002255 (last page) Prior to this week I had installed a new rack in the MSR to support the aligo CDS control room systems. This rack has a network switch (for the OPS LAN, supports control room and (L)VEA workstations), a NAT router to the GC LAN, a new CDS wiki machine, a combined NFS/DNS file server and an administration machine. During this week we installed to routers between the OPS LAN and the H2 FRONTEND LAN, these run the EPICS gateway, the GDS gateway and the router. We cloned the DTS boot server and created a new H2 boot server (called h2boot). We moved most of the front end machines off the DTS system and put them onto the H2 system. These machines are all located in the Computer Users Room, next to the DTS. We reracked the H2 DAQ system into its permanent rack, but it is temporarily located in the CUR for testing, it will permanently reside in the MSR. We are running many H2 front end systems on these machines, acquiring the data on the H2 DAQ. We installed three new workstations on the OPS lan and tested the major client code (dataviewer, dtt, medm) across the networks.
Took over operator duties from Jonathan around 1:00. Finished removal of all components from BSC8 (Cheryl, Jodi, Mitch, Jim, Patrick) Richard, Cyrus diagnosing card reader access for the LVEA large equipment man door. Gerardo to mid Y to move pallets into the lab area. Assembly of squeezer experiment continues.
Times in PST: 0903 - Input violation, clean room roll-up door 0934 - Richard out to high bay roll-up door, swapping input/output card-readers to diagnose card-reader issues 1024 - Door Forced, LVEA 1050 - Oscar begins patching holes in the concrete on the top of the Y-Arm beam tube. 1103 - Gerardo out to LVEA to look at hole template for HAM chambers 1230 ~ H2 ITMY, H2 FMY removed to OSB clean room
2608 - Kyle - BSC8 Vacuum work 2607 - Keita - Squeezer prep 2604 - Kyle - BSC9 remove east door install pump 2595 - Kyle - BSC10 vent 2594 - Hugh - HEPI Actuator flushing 2589 - Kyle - BSC6 work 2588 - Patrick - IOC work 2581 - Kyle - Remove BSC1 south door 2574 - Cheryl - Remove H2 TCS 2571 - Richard - Remove H2 electronics 1793 - Richard - Install temporary patch fibers at MX and MSR 2566 - Dave - Remove H2 Channels from frame 2530 - Robert - Infrasound at EX When complete, please sign out the permit.
(Cheryl, Patrick, Mitchell, Jim, Jodi, Mike) Status in BSC8 as of Friday 4:30pm: Once the BSC door was removed, the team locked down ITMY and FMY, removed OSEMs, and began extracting auxiliary components such as black glass beam dumps and associated (unwieldy) aluminum structures. Several of the latter had galled bolts which had to be snapped to remove. Hardware for the removal of optics and LOS structures was staged in-chamber. We expect to complete this work today Mon 15th.
8:15 - Electrician out in the LVEA Ski, Richard, Jodi, and others moving a clean room near the PSL Patrick to End X to replace dust monitor cabling 11:31 – error entering LVEA - unnamed card (#508) 12:00 - Gerardo arrives in 1 ton truck with delivery ~12:25 – card reader error – undeclared card into Large Equipment Main Door ~12:33 – card reader error – undeclared card into Large Equipment Main Door – 3 times within a 2-minute span 12:45 - Patrick returns from End X ~1:00 - beginning of staging and removal of BSC8 door and removal of optics. This work continues at the end of the day.
X-end air <-54C when measured with purge line decoupled and 1psig air blowing out from VE into the room, i.e. OK now -> began pumping X-end. Pumped YBM+Y1 with YBM MTP for ~2 1/2 hours to partially remove ~3 weeks of accumulated H2 from CP3, Y1 and CP1 -> Vented YBM, removed all but (4) bolts from BSC8 south door.
R. McCarthy, C. Reed, F. Clara, Zack & Rodney (manpower) Finish removal of cable trays around H2. Not all cable trays around BSC8, BSC4, BSC1, BSC2, and BSC7 were removed, since H1 / access system cables are still running on some cable trays. Moved H2 PSL racks away from the PSL table.
Completed swap of front panel for LSB Chiller
Times in PDT: 0908 - SnowVally arrives. 0909 - Door Forced, LVEA 0936 - Clean Room Roll-Up Door Alarm 0936 - Door Forced, LVEA 0947 - Patrick to outbuildings to measure cable length 1040 - Keith Thorne starts nscd daemon on control6 to speed up file-system 1049 - SnoVally returns 1109 - Door Forced, LVEA 1136 - Door Forced, LVEA 1158 - Wood recycling arrives 1213 - CDS filesystem is so slow today 1222 - Ski's delivery from Tate(?) comes 1427 - Input Violations, MY or EY 1452 - Door Forced, LVEA 1500 - All-Hands Safety Meeting hosted by David Nolting 1739 - OSB Doors Locked
Laser is off. Done to aid the H2-ITMY/FMY de-install team.
X-end - Previous attempt at drying X-end volume (see entry from 11/9/2010) was too laborsome for minimal benefit -> Tried different approach today. Roughed down volume to <100 torr then backfilled to ~1 psig with dry air this resulted in -35C air blowing out of VE when purge line decoupled -> Repeated exercise this time going down to <10 torr then backfilling -> will pump X-end normally tomorrow. Y-mid - Shutdown Y-mid turbo and QDP80
Yesterday we finished resetting height and pitch of the Main Chain on Q2 after the mega mass swap. The TM is now sitting at at a hint over 22mm (21.7mm nom) from the LS bracket fiducial and the pitch error is 0.5mRad (2mm of beam displacement at the wall/4m lever arm from Q2 to wall) based on the optical lever. So, we are within spec on both of these numbers. We're moving on to the Reaction Chain and then will look at yaw and gap.
Moving to R0, we see that we are pitched out at the PenRe causing the lower bump stops to touch the Pen on M0. Looking closer at both chains, it seems the pitch error is at the UIM/Pen stage on both chains. The R0 UIM needed 100g moved from front to back on the mass in order to be better leveled. This was achieved by the following. R0 UIM - took off: 25g + 100g on top front turret 25g on back top left turret 50g 1st from cntr of 3 on right front top plate replaced it with: 37g + 37g on top front turret 75g on back top left turret 100g 1st from cntr on left back top plate After all of this, we adjusted out the pitch error seen in the Top Mass with the course pitch adjusters. We noticed that the R0 right adjuster looked off center compared to the left one, so we adjusted this one side which corrected pitch and looked more in line with the COM. Next we saw that R0 hung low by ~2mm and was also side shifted from M0 by ~1mm to the right (viewed from back). We added a 1.5mm shim set (total now = 3.5mm) to the left Top Stage Blade and a 0.5mm shim to the right (total now = 0.5mm). A final tweek to one of the R0 Top Stage Blade cartridges to adjust out a little yaw left the TM and the ReTM with a nice 5mm +/- 0.5mm gap. Tomorrow we will revisit M0 to adjust out some minor pitch error at the lower masses.
Kyle, Chris (Apollo)-Installed BSC9 east door at X-end Kyle, X-end - IP12 controller died last night as room was too warm with QDP80 and all (5) of the purge air compressors running (BSC9 door off soft cover on - typically purge flow is set to max when door and soft cover are both off then reduced when soft cover is installed) Also, purge air drying tower had switching failure this morning and dewpoint measured -13C -> Investigation showed that "purge air valve" which dictates air pressure on tower which is regenerating dessicant was set at ~95psi -> corrected by setting value to 65psi - this alone will cause ultimate "dryness" to be poor. Additionally, deduced that 1of4 gravity-style check valves was stuck open - this would be the source of the switching failure -> whacked check valve body with knuckles during portion of cycle when air flows "against the arrow". This freed the stuck flapper and now ok -> Purge air system Ok now measure <-54C comming from supply but ~-17C when blowing back out of VE -> Don't have good means to dry-out VE other than filling with (now) dry air then decoupling purge connection and letting VE blow out into the room, reconnect purge and refilling VE to 1psi with dry air, decoupling etc... which I did several times throughout the day. Note: purge air was measured to be <-54C at time X-end was vented. 95psi setting at drying tower causes inefficiency but doesn't cause noticeable problem until demand becomes high for an extended period of time. Kyle, Y-end - Finally have good vapor pressure at Y-end LN2 dewar (new value is 6 turns ccw from fully closed economizer valve adjuster screw) -> no more "low N2 flow" alarm on QDP80 -> Resumed pumping Y-end.
8:03 - 11:34 Oscar patching mouse holes along the Y arm 8:34 - 8:57 Dani transitioning end X to laser safe 9:49 Unifirst delivery 10:19 Praxair delivery to mid Y 10:37 ISCT9 being moved to squeezer experiment 10:49 gravel truck arrives ? another gravel truck arrives Other work: Christina, Terry cleaning BSC8 and surrounding area Sheila, Keita, Dani, Conor, Daniel assembling squeezer experiment Filiberto continuing CDS deinstall Rolf, Alex, Keith here to help H2 CDS install Door is back on end X Work continues on the foundation for the H2 electronics building
Completed site inspection tour, found no problems Replaced battery for FMCS system. FMCS is now restored to full operation.
