 Tue Jan 28 17:36:45 2020, gautam, Configuration, Computers, Local EPICS7.0 installed on megatron
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[Jon, gautam]
We found that the caput commands were taking much longer to execute
on megatron than on pianosa (for example). Suspecting that this had something to do with the fact that megatron was using EPICS binaries from the shared |
 Tue Jan 28 19:12:30 2020, Jon, Configuration, PSL, Spare channels added to c1psl chassis 
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After some discussion with Gautam, I decided to build more spare channels into the new c1psl machine. This is anticipation of adding new laser and ISS
channels in the near future, to avoid having to disconnect the installed chassis and pull it out of the rack. The spare channels will be wired to DB37M
feedthroughs on the front side of the chassis, with enough wire length to be able to pull the breakout boards out of the front to reconfigure their wiring |
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Mon Jun 22 10:43:25 2020, Jon, Configuration, VAC, Vac maintenance at 11 am
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The vac system is going down at 11 am today for planned maintenance:
Re-install the repaired TP2 and TP3 dry pumps [ELOG 15417]
Incorporate
an auto-mailer and flag channel into the controls code for signaling tripped interlocks [ELOG 15413]
We |
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Mon Jun 22 20:06:06 2020, Jon, Configuration, VAC, Vac maintenance complete
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This work is finally complete. The dry pump replacement was finished quickly but the controls updates required some substantial debugging.
For one, the mailer code I had been given to install would not run against Python 3.4 on c1vac, the version run by the vac controls since about
a year ago. There were some missing dependencies that proved difficult to install (related to Debian Jessie becoming unsupported). I ultimately solved |
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Tue Jun 23 17:54:56 2020, rana, Configuration, VAC, Vac maintenance complete
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I propose we go for all CAPS for all channel names. The lower case names is just a holdover from Steve/Alan from the 90's. All other systems are
all CAPS.
It avoids us having to force them all to UPPER in the scripts and channel lists. |
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Wed Jul 1 18:03:04 2020, Jon, Configuration, VAC, UPS replacements
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I looked into how the new UPS devices suggested by Chub would communicate with the vac interlocks. There are several possible ways, listed in
order of preference:
Python interlock service directly queries the UPS via a USB link using the (unofficial) tripplite |
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Thu Jul 9 18:00:35 2020, Jon, Configuration, VAC, UPS replacements
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Chub has placed the order for two new UPS units (115V for TP2/3 and a 220V version for TP1).
Tripp Lite SMX1000RT2U: https://www.grainger.com/product/TRIPP-LITE-UPS-System-36HW20
Tripp
Lite Smart1000LCD: https://www.grainger.com/product/TRIPP-LITE-Smart-UPS-1AYA6
They |
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Sat Aug 8 07:36:52 2020, Sanika Khadkikar, Configuration, Calibration-Repair, BS Seismometer - Multi-channel calibration
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Summary :
I have been working on analyzing the seismic data obtained from the 3 seismometers present in the lab. I noticed while looking at the combined
time series and the gain plots of the 3 seismometers that there is some error in the calibration of the BS seismometer. The EX and the EY seismometers |
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Fri Aug 14 10:10:56 2020, Jon, Configuration, VAC, Vacuum repairs today
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The vac system is going down now for planned repairs [ELOG 15499]. It will likely take
most of the day. Will advise when it's back up. |
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Sat Aug 15 02:02:13 2020, Jon, Configuration, VAC, Vacuum repairs today
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Vacuum work is completed. The TP2 and TP3 interlocks have been overhauled as proposed in ELOG
15499 and seem to be performing reliably. We're now back in the nominal system state, with TP2 again backing for TP1 and TP3 pumping
the annuli. I'll post the full implementation details in the morning. |
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Sat Aug 15 15:12:22 2020, Jon, Configuration, VAC, Overhaul of small turbo pump interlocks
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Summary
Yesterday I completed the switchover of small turbo pump interlocks as proposed in ELOG
15499. This overhaul altogether eliminates the dependency on RS232 readbacks, which had become unreliable (glitchy) in both controllers.
In their place, the V4(5) valve-close interlocks are now predicated on an analog controller output whose voltage goes high when the rotation |
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Fri Dec 18 22:59:12 2020, Jon, Configuration, CDS, Updated CDS upgrade plan
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Attached is the layout for the "intermediate" CDS upgrade option, as was discussed on Wednesday. Under this plan:
Existing FEs stay where they are (they are not moved to a single rack)
Dolphin IPC remains PCIe Gen 1 |
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Mon Dec 21 09:28:50 2020, Jamie, Configuration, CDS, Updated CDS upgrade plan
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Quote:
Attached is the layout for the "intermediate" CDS upgrade option, as was discussed on Wednesday.
Under this plan: |
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Wed Dec 23 23:06:45 2020, gautam, Configuration, CDS, Updated CDS upgrade plan
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The diagram should clearly show the host machines and the expansion chassis and the interconnects between them.
We no longer have
any Gentoo bootserver or diskless FEs.
The "c1lsc" host is in 1X4 not 1Y3.
The connection between c1lsc and Dolphin switch
is copper not fiber. I don't know how many Gbps it is. But if the switch is 10 Gbps, are they really selling interface cables that have lower speed? |
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Tue Jan 19 14:05:25 2021, Jon, Configuration, CDS, Updated CDS upgrade plan
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I've produced updated diagrams of the CDS layout, taking the comments in 15476 into
account. I've also converted the 40m's diagrams from Omnigraffle ($150/license) to the free, cloud-based platform draw.io.
I had never heard of draw.io, but I found that it has most all the same functionality. It also integrates nicely with Google Drive. |
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Tue Jan 19 15:43:24 2021, gautam, Configuration, CDS, Updated CDS upgrade plan
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Not sure if 1Y1 can accommodate both c1sus2 and c1bhd as well as the various electronics chassis that will have to be installed. There may need to be
some distribution between 1Y1 and 1Y3. Does Koji's new wiring also specify which racks hold which chassis?
Some minor improvements to the diagram: |
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Mon Mar 15 20:40:01 2021, rana, Configuration, Computers, installed QTgrace on donatella for dataviewer
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I installed QTgrace using yum on donatella. Both Grace and XMgrace are broken due to some boring fight between the Fedora package maintainers and the (non existent) Grace
support team. So I have symlinked it: |
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Wed Mar 17 09:05:01 2021, Paco, Anchal, Configuration, Computers, 40m Control Room Changes
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Switched positions of allegra and donatella.
While doing so, the hdmi cable previously used by donatella snapped. We replaced this
cable by another unused cable we found connected only on one end to rossa. We should get more HDMI cables if that cable was in use for some other purpose.
Paco
bought a bluetooth speaker/mic that is placed infront of allegra and it's usb adapter is connected to iMac's keyboard in the bottom. With the new |
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Wed Apr 14 13:16:20 2021, Anchal, Configuration, Computers, 40m Control Room Changes
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I have confirmed that the old two monitors' backlighting is not working. One can see the impression of the display without any brightness
on them. Both old monitors are on the shelf behind.
Today we got a monitor and mouse from Mike. I had to change /etc/default/grub GRUB_GFXMODE
to 1920x1200@30 on allegra for it to work with the(any) monitor.
Allegra is Debian 10 with latest cds-workstation installed on it. It is a good |
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Wed May 26 11:45:57 2021, Anchal, Paco, Configuration, IMC, MC2 analog camera
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[Anchal, Paco]
We went near the MC2 area and opened the lid to inspect the GigE and analog video monitors for MC2. Looked like whatever image is coming through
the viewport is split into the GigE (for beam tracking) and the analog monitor. We hooked the monitor found on the floor nearby and tweaked the analog |
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Thu Aug 26 10:30:14 2021, Jamie, Configuration, CDS, front end time synchronization fixed?
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I've been looking at why the front end NTP time synchronization did not seem to be working. I think it might not have been working because
the NTP server the front ends were point to, fb1, was not actually responding to synchronization requests.
I cleaned up some things on fb1 and the front ends, which I think unstuck things. |
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Mon Jan 24 12:33:41 2022, rana, Configuration, Wiki, AIC Wiki: txz files allowed
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I updated the mime.local.conf file for the AIC Wiki so as to allow attachments with the .txz
format. THis should be persistent over upgrades, since its a local file. |
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Wed May 25 16:56:44 2022, Paco, Configuration, BHD, IFO recovery - IMC alignment
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[Yuta, Paco]
We aligned IMC to recover the IFO progressively. First step was to center the MC REFL beamspot on the camera as well as the WFS DC. Then slide
MC2 and MC3 together. Below are the alignment slider positions before/after. |
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Wed May 25 17:34:47 2022, yuta, Configuration, BHD, IFO recovery - IFO alignment
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IFO aligned to maximize flashings, except for GRY and LO-AS.
What we did: |
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Thu May 26 19:55:43 2022, yuta, Configuration, BHD, Oplevs centered, BHD DCPDs are now online
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[Paco, Yuta]
We have aligned the IFO (except for LO-AS and GRY), and centered all the oplevs.
We have also restored Gautam's in-air BHD DCPD setup and placed it to ITMY table. |
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Fri May 27 17:45:53 2022, yuta, Configuration, BHD, BHD camera installed, GRY aligned
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[JC, Paco, Yuta]
After the IFO recovery (elog 40m/16881), we installed an analog camera for BHD fringe |
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Thu Jun 2 20:05:37 2022, yuta, Configuration, PSL, IMC input power recovered to 1W, some alignment works
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[Paco, Yuta]
We have increased the output power from the PSL table to 951 mW (it was 96.7 mW). |
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Fri Jun 3 12:13:58 2022, Paco, Configuration, CDS, Fix RFM channels
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[Paco, Yuta]
We tried fixing the issue of LSC_TRY and LSC_TRX channels not working. We first did some investigation, and just like previously
reported by Chris, narrowed down the issue to the RFM channels coming from c1iscex/c1iscey. |
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Mon Jun 6 16:09:23 2022, rana, Configuration, DetChar, Summary Pages: seis BLRMS
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I updated the config file c1pem.ini in /users/public_html/detcharsummary/ConfigFiles, and commited it so I hope it works, but I did not have git push
permissions. Does anyone know what is the idea here? Should we do our own personal git clone and modify that way or shoudl we do it with the control account.
Wiki needs to clear out all the outdated information on this workflow. |
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Thu Jun 16 18:23:15 2022, Paco, Configuration, BHD, Recovering LO beam in BHD DCPDs
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[Paco, Yuta]
We recovered the LO beam on the BHD port. To do this, we first tried reverting to a previously "good" alignment but couldn't see
LO beam hit the sensor. Then we checked the ITMY table and couldn't see LO beam either, even though the AS beam was coming out fine. The misalignment |
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Tue Jun 21 14:17:50 2022, yuta, Configuration, BHD, BHD DCPDs re-routed to c1sus2
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After discussing with Anchal, we decided to route BHD related PD signals directly to ADC of c1sus2, which handles our new suspensions including
LO1, LO2, AS1, AS4, so that we can control them directly.
BHD related PD signals will be sent to c1lsc for DARM control. |
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Tue Jul 19 16:00:34 2022, yuta, Configuration, BHD, Fast channels for BHD DCPDs now available in c1lsc but not in c1hpc
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[Paco, Anchal-remote-support, Yuta]
We added fast channels to BHD DC PDs.
C1:LSC-DCPD_(A|B)_IN1 are now available, but |
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Thu Jul 21 21:50:47 2022, Tega, Configuration, BHD, c1sus2 IPC update
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IPC issue still unresolved.
Updated shared memory tag so that 'SUS' -> 'SU2' in c1hpc, c1bac and c1su2. Removed obsolete 'HPC/BAC-SUS' references
from IPC file, C1.ipc. Restarted the FE models but the c1sus2 machine froze, so I did a manual reboot. This brought down the vertex machines---which |
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Fri Jul 22 15:05:26 2022, Tega, Configuration, BHD, c1sus2 shared memory and ADC fix
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[Tega, Yuta]
We were able to fix the shared memory issue by updating the receiver model name from ''SUS' to 'SU2' and the ADC zero issue
by including both ADC0 and ADC1 in the c1hpc and c1bac models as well as removing the grounding of the unused ADC channels (including chn#16 and chn#17 |
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Fri Jul 22 17:46:10 2022, yuta, Configuration, BHD, c1sus2 watchdog update and DCPD ERR channels
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[Tega, Yuta]
We have added C1:HPC-DCPD_A_ERR and C1:HPC-DCPD_B_ERR testpoints, which can be used as A+B, A-B etc. |
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Mon Jul 25 17:58:10 2022, Tega, Configuration, BHD, c1sus2 IPC dolphin issue update
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From the 40m wiki, I was able to use the instructions here
to map out what to do to get the IPC issue resolved. Here is a summary of my findings.
I updated the /etc/dis/dishost.conf file on the frame builder machine to include the c1sus2 machine which runs the sender model, c1hpc, see below. |
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Mon Jul 25 18:09:41 2022, Tega, Configuration, BHD, BHD Homodyne Phase control MEDM screen
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[Paco, Tega, Yuta]
Today, we made a custom MEDM screen for the BHD Homodyne Phase Control, which is basically an overview of the c1hpc model. See Attachments
1 & 2 for details. |
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Mon Aug 1 18:42:39 2022, Tega, Configuration, BHD, c1sus2 IPC dolphin issue update
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[Yuta, Tega]
We decided to give the dolphin debugging another go. Firstly, we noticed that c1sus2 was no longer recogonising the dolphin card, which can be
checked using |
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Tue Aug 2 17:25:18 2022, Tega, Configuration, BHD, c1sus2 dolphin IPC issue solved
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[Yuta, Tega, Chris]
We did it! |
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Thu Sep 1 09:00:02 2022, JC, Configuration, Daily Progress, Locked both arms and aligned Op Levs
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Each morning now, I am going to try to align both arms and lock. Along with that, sometime at towards the end of each week, we should align the OpLevs.
This is a good habit that should be practiced more often, not only by me. As for the Y Arm, Yehonathan and I had to adjust the gain to 0.15 in order to
stabilize the lock. |
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Thu Sep 8 11:54:37 2022, JC, Configuration, Lab Organization, Lab Organization
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The arms in the 40m laboratory have now been sectioned off. Each arm has been divided up into 15 sections. Along the Y arm, the section are labelled
"Section Y1 - Section Y15". For the X arm, they are labelled "Section X1- Section X15". Anything changed or moved will now be updated
into the elog with their appropriate section. |
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Thu Sep 8 12:01:02 2022, JC, Configuration, Lab Organization, Lab Organization
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| The floor cable cover has been changed out for a new one. This is in Section X11. |
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Tue Oct 25 09:57:34 2022, Paco, Configuration, PEM, Auto Z on trillium interface board
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| I pressed the Auto-Z(ero) button for ~ 3 seconds at ~9:55 local (pacific) time on the trillium interface on 1X5. |
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Tue Oct 25 13:55:37 2022, Koji, Configuration, PEM, Auto Z on trillium interface board
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This nicely brought the sensing signal back to ~zero. See attachment
Some basic info:
BS Seismometer is T240 (Trillium)
The interface unit is at 1X5 Slot 26. D1002694
aLIGO |
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Tue Oct 25 22:01:53 2022, rana, Configuration, PEM, Auto Z on trillium interface board
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thanks, this seems to have recentered well.
It looks like it started to act funny at 0400 UTC on 10/24, so thats 9 PM on Sunday in the 40m. What was happening then?
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Mon Nov 14 14:52:56 2022, Paco, Configuration, SUS, BHD SUS Coil output balance
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[JC, Paco]
We installed a steering mirror intersecting the BHD beam path and put the AS beam on the ITMY Oplev QPD (see Attachment #1 for
a photo of this temporary hack) . This is done to do coil balancing of AS1/AS4, LO1/LO2. QPD sees ~ 10000 counts when the beam is centered. |
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Tue Nov 15 17:58:00 2022, Paco, Configuration, Cameras, POP camera realignment after IFO alignment
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[Paco, Yuta]
I swapped the 1 inch BS and lenses along the POP beam to clear the apertures and avoid clipping this beam. The results are illustrated by the
attached pictures; this was done right after Yuta had optimized IFO alignment so it's hopefully a good reference from now on. Yuta also tuned the alignment |
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Thu Nov 17 07:39:01 2022, JC, Configuration, Cameras, ITMX Camera
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| Coming in this morning, I found ITMX Camera malfunctioning. |
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Thu Nov 17 12:24:48 2022, Paco, Configuration, Cameras, ITMX Camera -- attempt at fix
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I found that an old BNC cable for ITMXF video existed so I first tried swapping both ends of the cable, one on the ITMX viewport and the other one in
the video MUX input in the rear. This didn't fix the issue.
I searched around in the CCD cabinet by XARM and found an identical analog camera so I swapped it and got the same image ... |
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Thu Nov 17 15:53:47 2022, JC, Configuration, Cameras, ITMX Camera -- attempt at fix
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The issue was the power supply.
Quote:
I |