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New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Type Categoryup Subject Text Attachments
  16418   Wed Oct 20 15:58:27 2021 KojiUpdateVACHow to vent TP1Probably the hard disk of c0rga is dead.
I'll follow up in this elog later today.

Looking at the log in /opt/rtcds/caltech/c1/scripts/RGA/logs
  
  16490   Mon Dec 6 14:26:52 2021 KojiUpdateVACPumping down the RGA sectionJordan reported that the RGA section needs
to be pumped down to allow the analyzer to
run at sufficiently low pressure (P<1e-4
  
  16493   Tue Dec 7 13:12:50 2021 KojiUpdateVACPumping down the RGA sectionSo that Jordan can run the RGA scan this
afternoon, I ran TP3 and started pumping
down the RGA section.
  
  16494   Wed Dec 8 10:14:43 2021 JordanUpdateVACPumping down the RGA sectionAfter an overnight pumpdown/RGA warm up,
I took a 100 amu scan of the RGA volume and
subsequent pumping line. Attached is a screenshot
 40m_RGAVolume_12_8_21.PNG40m_RGAVolume_Torr_12_8_21.PNG 
  16501   Fri Dec 10 19:22:01 2021 KojiUpdateVACPumping down the RGA sectionThe scan result was ~x10 higher than the
previously reported scan on 2020/9/15 (https://nodus.ligo.caltech.edu:8081/40m/15570),
  
  16508   Wed Dec 15 15:06:08 2021 JordanUpdateVACVacuum Feedthru InstallJordan, Chub

We installed the 4x DB25 feedthru
flange on the North-West port of ITMX chamber
  
  16529   Tue Dec 21 16:35:39 2021 KojiUpdateVACITMX NW feedthru (LO1-1) connector pin bentI've received a report that a pin of
an ITMX NW feedthru connector was bent. (Attachment
1)
 PXL_20211222_002019620.jpgPXL_20211222_003014068.jpg 
  16634   Mon Jan 31 10:39:19 2022 JordanUpdateVACTP1 and Manual Gate Valve RemovalJordan, Chub

Today, Chub and I removed TP1 and
the failed manual gate valve off of the pumping
 20220131_100637.jpg20220131_102807.jpg20220131_102818.jpg20220131_100647.jpg 
  16643   Thu Feb 3 10:25:59 2022 JordanUpdateVACTP1 and Manual Gate Valve InstallJordan, Chub

Chub and I installed the new manual
gate valve (Nor-Cal GVM-6002-CF-K79) and
 20220203_101455.jpg20220203_094831.jpg20220203_094823.jpg 
  16682   Sat Feb 26 01:01:40 2022 TegaUpdateVACOngoing work to get the FRG gauges readouts to EPICs channelsI will make a detailed elog later today
giving a detailed outline of the connection from
the Agilent gauge controller to the vacuum
  
  16683   Sat Feb 26 15:45:14 2022 TegaUpdateVACOngoing work to get the FRG gauges readouts to EPICs channelsI have attached a flow diagram of my understanding
of how the gauges are connected to the network.

Earlier today, I connected the
 Vac-gauges-flow-diagram.png 
  16688   Mon Feb 28 19:15:10 2022 TegaUpdateVACOngoing work to get the FRG gauges readouts to EPICs channelsI decided to create an independent service
for the XGS data readout so we can get this
to work first before trying to integrate
  
  16691   Tue Mar 1 20:38:49 2022 TegaUpdateVACOngoing work to get the FRG gauges readouts to EPICs channelsDuring my investigation, I inadvertently
overwrote the serial port configuration for
the connected devices. So I am now working
 Working_Serial_Port_List_1.pngWorking_Serial_Port_List_2.pngWorking_Config_Ports#1-5.pngWorking_Config_Ports#7-8.png 
  16692   Wed Mar 2 11:50:39 2022 TegaUpdateVACOngoing work to get the FRG gauges readouts to EPICs channelsHere is the IOLAN SDS TCP socket setting
and the USBserial setting for comparison.

I have also included the python
 XGS600_IOLAN_settings_1.pngXGS600_IOLAN_settings_2.pngXGS600_USBserial_settings.pngXGS600_comm_test.pyXGS600_comm_test_result.txt 
  16693   Wed Mar 2 12:40:08 2022 TegaUpdateVACOngoing work to get the FRG gauges readouts to EPICs channelsConnector Test:

A quick test to rule out any issue
with the Ethernet to Serial adapter was done
 6x 
  16701   Fri Mar 4 18:12:44 2022 KojiUpdateVACRGA pumping down1. Jordan reported that the newly installed
Pirani gauge for P2 shows 850Torr while PTP2
show 680 Torr. Because of this, the vacuum
 Screenshot_2022-03-04_19-38-11.png 
  16704   Sun Mar 6 18:14:45 2022 TegaUpdateVACOngoing work to get the FRG gauges readouts to EPICs channelsFollowing repeated failure to establish
communication between c1vac and the XGS600
controller via Perle IOLAN serial device
 iolan_xgs_comm_investigation.pdf 
  16706   Mon Mar 7 13:53:40 2022 TegaUpdateVACOngoing work to get the FRG gauges readouts to EPICs channelsSo it appears that my deduction from
the pictures of needing a cable swap was
correct, however, it turns out that the installed
 iolan_xgs_comm_live.pdf 
  16707   Mon Mar 7 14:52:34 2022 KojiUpdateVACOngoing work to get the FRG gauges readouts to EPICs channelsGreat trouble shoot!

> I guess, the only remaining
issue now is the incorrect atmospheric
  
  16713   Tue Mar 8 12:08:47 2022 TegaUpdateVACOngoing work to get the FRG gauges readouts to EPICs channelsOMG, it worked! It was indeed a calibration
issue and all I had to do was press the "OK"
button after selecting the "CAL"
 XGS600_calibration.pdf 
  16717   Wed Mar 9 10:23:28 2022 JordanUpdateVACLeak Testing of New Manual Gate Valve - Attempt #1Jordan, Chub, Paco

Chub and I went into the lab this
morning to leak check the new gate valve
  
  16721   Thu Mar 10 09:39:59 2022 JordanUpdateVACLeak Testing of New Manual Gate Valve - Attempt #2This morning Chub and I leak checked the
manual gate valve with the RGA and helium.
There was no change in the helium partial
 3-09-2022.PNG3-10-2022.PNG 
  16747   Tue Mar 29 15:07:11 2022 TegaSummaryVACOpening of MC and ETM chambers[Anchal, Chub, Ian, Paco, Tega]

Today, we opened the MC chamber,
ETMX chamber and ETMY chamber.
  
  16769   Mon Apr 11 11:00:30 2022 JancarloUpdateVACC1VAC Reboot and Nitrogen tanks[Paco, JC, Ian, Jordan, Chub]

Checking in the morning, I walked
over to the Nitrogen tanks to check the levels.
  
  16772   Tue Apr 12 09:05:21 2022 JordanUpdateVACNew Pressure Gauge Install/Pump Spool VentToday, Tega and I would like to vent the
pump spool an dinstall the new FRG-400 Agilent
Pressure Gauges (per elog 15703). The attached
 6x 
  16773   Wed Apr 13 12:50:07 2022 TegaUpdateVACNew Pressure Gauge Install/Pump Spool Vent[Jordan, JC, Tega]

We have installed all the FRGs
and updated the VAC medm screens to display
 VAC_FRG_UPGRADE.png 
  16777   Thu Apr 14 09:04:30 2022 JordanUpdateVACRGA Volume RGA ScansPrior to venting the RGA volume on Tuesday
(4/12/2022) I took an RGA scan of the volume
to be vented (RGA+TP1 volume+Manual Gate
 40mRGA_Overlay.pdfRGAVolume_4_12_22.PNG 
  16794   Thu Apr 21 11:31:35 2022 JCUpdateVACGauges P3/P4[Jordan, JC]

It was brought to attention during
yesterday's meeting that the pressures
 IMG_0560.jpegIMG_0561.jpeg 
  16796   Thu Apr 21 16:36:56 2022 TegaUpdateVACcleanup work for vacuum git repogit repo - https://git.ligo.org/40m/vac

Finally incorporated the FRGs into
the main modbusIOC service and everything
  
  16806   Fri Apr 22 14:14:33 2022 JordanUpdateVACTP3 Forepump tip seal replacementJordan, JC

While the pumpspool is vented,
I thought it would be a convenient time to
 IMG_0572.jpegIMG_0573.jpeg 
  16820   Fri Apr 29 08:34:40 2022 JCUpdateVACRGA Pump DownJordan and I, in order to start pumpig
down the RGA Volume, we began by opening
V7 and VM. Afterwards, we started RP1 and
 Screen_Shot_2022-04-29_at_8.46.53_AM.png 
  16822   Mon May 2 10:00:34 2022 JordanUpdateVACTP3 Forepump tip seal replacement[JC, Jordan]

Jordan recieved the new tip seal
Friday afternoon and I continued the replacement
  
  16825   Tue May 3 13:18:47 2022 JCUpdateVACRGA Pump DownJordan, Tega, JC

Issue has been resolved. Breaker
on RP1 was tripped so the RP1 button was
  
  16867   Fri May 20 12:42:23 2022 TegaUpdateVACDoor installation on the end stations[JC, Tega, Chub]

Today we installed the 200 lbs
doors on the end station chambers.
  
  16870   Tue May 24 10:37:09 2022 TegaUpdateVACadded FRG channels to slow channel ini file[Vacuum gauge sensors]

Paco informed me that the FRG sensor
EPICS channels are not available on dataviewer,
  
  16871   Tue May 24 11:04:53 2022 JCUpdateVACBeginning Pumpdown[JC, Jordan, Paco, Chub]

We began with the pumpdown this
morning. We started with the annulus volume
 PUMPDOWN-2022-05-24_16-57-59.pngC1VAC_Screenshot_2022-05-24_16-59-27.png 
  16900   Wed Jun 8 16:03:12 2022 KojiUpdateVACPower Outage 220608: Vacuum Recovery=== Observation ===


TP1/2/3 failed. AUX RP
did not survive the power outage (of course)


===
 Screenshot_2022-06-08_16-43-13.png 
  16916   Wed Jun 15 07:26:35 2022 JCUpdateVACBeginning Pumpdown[Jordan, JC]

Jordan and I went in to retore
the Vacuum System back to it's original
  
  16980   Fri Jul 8 14:03:33 2022 JCHowToVACVacuum Preparation for Power Shutdown [Koji, JC]

Koji and I have prepared the vacuum
system for the power outage on Saturday.
 Screen_Shot_2022-07-12_at_7.02.14_AM.png 
  16985   Mon Jul 11 15:26:12 2022 JCHowToVACStartup after Power Outage[Koji, Jc]

Koji and I began starting that
Vacuum system up.
  
  16986   Mon Jul 11 17:25:43 2022 TegaUpdateVACfixed obsolete reference bug in serial_XGS600 serviceKoji noticed that the FRG sensors were
not updating due to reference to an
obsolete modbusIOC_XGS service, which was
  
  16987   Mon Jul 11 17:41:52 2022 KojiHowToVACStartup after Power Outage- Once the FRG gauge readings are back
(see next elog by Tega), I could open V1
to pump down the main vacuum manifold.
 Screen_Shot_2022-07-11_at_18.13.00.png 
  17154   Fri Sep 23 10:05:38 2022 JCUpdateVACN2 Interlocks triggered [Chub, Anchal, Tega, JC]

After replacing an empty tank this
morning, I heard a hissing sound coming from
 Screenshot_2022-09-23_10-19-39.pngScreenshot_2022-09-23_10-22-45.png 
  17283   Fri Nov 18 09:00:27 2022 JCUpdateVACPressure Gauge InformationI bought the spare Full-Range Pirani Gauge
a while ago and realized that I never logged
this. The Pirani Gauges we are using is described
  
  17307   Wed Nov 23 17:21:44 2022 JCUpdateVACInterlocks may have been tripped due to N2 pressure loss[Paco, JC]

While changing out one of the N2
tanks today, one of the fitting stripped.
 Screen_Shot_2022-11-23_at_5.22.57_PM.pngScreen_Shot_2022-11-23_at_5.23.09_PM.png 
  17312   Fri Nov 25 12:15:46 2022 AnchalUpdateVACVacuum Gate valves restoredI came today to find that PSL shutter was
closed. I orginially thought some shimmer
obersvations are underway in the quiet state.
 Screenshot_2022-11-25_12-29-23.png 
  4274   Fri Feb 11 16:43:09 2011 steveUpdateVIDEOMC1 & 3 video monitorI set up video monitoring of MC1 and MC3  P1070415.JPG 
  4314   Thu Feb 17 13:20:06 2011 SureshUpdateVIDEOSome more labels[Larisa, Kiwamu, Steve and Suresh]
 
  We continued the labeling
  
  4346   Wed Feb 23 16:56:17 2011 Larisa ThorneUpdateVIDEOCable laying...continuedHaving finished labeling the existing cables
to match their new names, we (Steve, Kiwamu
and Larisa) moved on to start laying new
  
  4390   Wed Mar 9 16:07:42 2011 kiwamuUpdateVIDEOcable session[Koji, Steve, Suresh, Kiwamu]
The following video cables have been
newly laid down :
  
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