Jim and Dave:
as part of EY BRS code issues, I power cycled the h1brsey computer. This was a full power down, using the rocker switch on the rear of the unit after the windows operating system had shut the machine down.
Fil and Dave:
We replaced the 12V DC power connector on the EY IRIG-B unit. The original connector had a bent locking screw which made powering the unit down difficult. The new connector has a thumb screw and does not need a screwdriver to disconnect.
All the models at EY were stopped for the duration of the repair, and restarted at 11:20 PDT. The front end computers were not power cycled.
TITLE: 09/19 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: N/A
CURRENT ENVIRONMENT:
Wind: 20mph Gusts, 17mph 5min avg
Primary useism: 0.04 μm/s
Secondary useism: 0.38 μm/s
QUICK SUMMARY:
Maintenance
Vent: East door removed from HAM2
The attached plot shows 10 days of the HAM2 Corner2 Horizontal CPS. There is about 24 hours of low noise condition after I power cycled the CPS section of the Interface Chassis. The Saturday power glitch is obvious as is the noise level after front end recovery. I'll do the power cycle again but it is weird to power cycle to correct a problem originating from by a power cycle.
Still appears quiet after...5 hours maybe it is has been since I power cycled the Interface Chassis.
SLOOW vent accomplished. HAM 1 took about 8 hrs, HAM 6 about 7 hrs, and vertex about 9.5 hrs.
All piranis need to be calibrated at atmospheric pressure; they were all over the place. PT180 flat lined at 750 Torr. PT120 drifted to 1150 Torr (known issue and will be replaced). The third gauge on vertex, PT170, plateaued at 607 Torr. PT100 on HAM1 plateaued at 753 Torr, and PT110 on HAM6 at 620 Torr. Note that PT110, 170, 180 are the new style full range gauges: pirani+hot cathode all-in-one.
Closed all three purge air valves to chambers/volumes.
GV5's annulus ion pump went out of range during the vent today. Known inner o-ring leak somewhere not on beam tube side. Turned AIP controller OFF and also valved out the pump.
Jeff B, Dave B,
I have modified H1EDCU_DUST.ini to add the four new LVEA dust monitors (numbers 3,4,5,30). This will go in on the next DAQ restart.
TITLE: 09/18 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: N/A
SHIFT SUMMARY:
Venting of HAMs 1 and 6 is underway today
LOG:
15:35 Richard going to inspect HVAC in LVEA
16:14 Jason going into PSL enclosure
16:17 Gerardo out to HAM1&6 to climb up and close ion pump gate valves in preperation for venting.
16:20 Richard and Peter out near PSL investigating remote DBB issue
16:34 Richard and Peter back
17:06 Jason heading back out to PSL enclosure to test AC.
17:14 Richard heading down arms to check fire panels
17:24 Jason called to say that AC in the PSL is still not functioning properly
17:25 Betsy and Travis back
17:26 Hugh out to EY
17:49 Richard back. He had to reset EX fire panel.
18:03 Hugh back
18:07 Jeff B into LVEA to check dust monitors
18:17 Hugh to EX to let HFD in to veriy fire panel.
18:28 Jeff B out
18:31 Richard out to LVEA to reset PSL AC breakers
18:53 Dave B out to EX
20:00 Jason out to PSL enclosure
20:10 Dust monitor 10 300u RED alarm
20:16 Dave B out to both mid stations
20:45 Dave B back
21:10 Travis out to LVEA to drop off a floodlight
22:13 Dave B back. Said the door at MX between the mech room and the VEA was "propped" open?
See attached screenshot. Things I noted were:
Yes, since the HEPIs had all been locked on the stops (in the corner station) and I am planning to shut things down for a filter change, I did not restart the corner station HEPI pumps.
PSL is undergoing quite a bit of maintenance. Power down of the system is quite evident indicating the NPRO replacement and the ensuing power fluctuations during alignment. The Chiller manifold was also replaced and ensuing leaks were mitigated over the following few days.
For the purpose of injecting PCAL lines, there are two channels that can be used: H1:CAL-PCALY_RX_PD_OUT_DQ (for reflected light) and H1:CAL-PCALY_TX_PD_OUT_DQ (for transmitted light). At various points during O2, we switched off between these two channels in C00 and C01 data at Livingston to account for things like PCAL clipping in the RX channel. The exact dates of each change are listed below, as documented on the filter configurations wiki page.
Version C00
Used RX from 116440990 (2016 Sep 14, 16:43:07 UTC) -- 1182618646 (2017 Jun 27, 17:10:28 UTC)
Used TX from 1182618646 (2017 Jun 27, 17:10:28 UTC) -- now
Version C01
Used RX from 1163173888 (2016 Nov 14, 15:51:11 UTC) -- 1181941760 (2017 Jun 19, 21:09:02 UTC)
Used TX from 1181941760 (2017 Jun 19, 21:09:02 UTC) -- now
The corresponding record over at Livingston is in aLOG 35948.
Attached plot show the ratio of TX PD to RX PD during O2. The size of deviations from one in that plot, when RX PD is used, indicates the systematic uncertainty introduced by the PCal clipping. The circled regions show the times when RX PD was used and the ratio was not close to one. The systematic uncertainties introduced by the clipping during those time is <3 %. This systematic would be reduced in the C02 frames. Each data point in that plot is running average of an hour of data. We plot data only during the observation times and with hoft ok state.
Pt-114 is alarming after being isolated from vertex. The rise in pressure from daily tube warming is causing it to cross over the 5e-9 Torr alarm setting.
EX timing was reporting error with 4th Duotone slave, and h1iopiscex was in error. I found that the timing slave on h1iscex's IO Chassis was still trying to sync up (flashing LED). This system has a separate DC power supply for the timing slave, part of a past noise study. I power cycled both the timing slave and the IO Chassis, and now the code is running correctly and the timing error has been resolved.
started h1pemmy system while at MY. Powered up h1digivideo[0,1,2] and h1auxscript0
started h1pemmx system.
DAQ EDCU is now only complaining about corner station HEPI pump controller (Hugh is on this) and the end station HWS (TiVo is looking into this)
Hugh and Thomas have worked their magic, the EDCU is happy again.
The dust monitor alarm levels throughout the site have been set to their normal levels. In some cases these levels may need adjusting depending upon what is being done in the space they are monitoring. Please get in touch with Jeff Bartlett before adjusting the dust monitor alarm levels or with any contamination control concerns or questions.
| ISO-Clean | 0.3µ Minor | 0.3µ Major | 0.5µ Minor | 0.5µ Major |
|---|---|---|---|---|
| 100 | 200 | 300 | 70 | 100 |
| 1000 | 2000 | 3000 | 700 | 1000 |
| 10000 | 20000 | 30000 | 7000 | 10000 |
| 100000 | 200000 | 300000 | 70000 | 100000 |
Looks like three IP isolation valves are leaking: IP1,2,4. Turning those IPs OFF. Valves on HAM 1,6 look good and sealed.
Kyle, Gerardo, Chandra
Started {slow} venting corner station at 10:16 am local, including HAM 1,6. DP measured -45degC or less at HAM 6 & vertex.
Note: we don't trust pirani gauge on PT-120 at high pressures based on data from May vent. We are monitoring piranis on PT-170 & PT-180.
Dave B., Jeff B.,
Today we enabled the new dust monitors in the LVEA. The new dust monitors add trending data for the chambers being opened. The new monitor trend data will go live with a DAQ restart after HAM1 & HAM6 are vented.
LVEA Dust Monitor Locations
| Dust Mon # | LVEA Location |
|---|---|
| 2 | HAM2 Cleanroom |
| 3 | HAM3 Cleanroom |
| 4 | HAM4 Cleanroom |
| 5 | HAM5 Clenaroom |
| 6 | HAM6 Cleanroom |
| 10 | Biergarten - BSC1 |
| 30 | Biregarten - BSC3 |
