| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16851
|
Fri May 13 14:26:00 2022 |
JC | Update | Alignment | LO2 Beam | [Yehonathan, JC]
Yehonathan and I attempted to align
the LO2 beam today through the BS chamber |
|
|
16852
|
Fri May 13 18:42:13 2022 |
Paco | Update | Alignment | ITMX and ITMY sat amp failures | [Yuta, Anchal, Paco]
As described briefly by JC, there
were multiple failure modes going during |
|
|
16853
|
Sat May 14 08:36:03 2022 |
Chris | Update | DAQ | DAQ troubleshooting | I heard a rumor about a DAQ problem at
the 40m.
To investigate, I tried retrieving |
|
|
16854
|
Mon May 16 10:49:01 2022 |
Anchal | Update | DAQ | DAQ troubleshooting | [Anchal, Paco, JC]
Thanks Chris for the fix. We are
able to access the testpoints now but we |
|
|
16855
|
Mon May 16 12:59:27 2022 |
Chris | Update | DAQ | DAQ troubleshooting | It looks like the RFM problem started a
little after 2am on Saturday morning (attachment
1). It’s subsequent to what I did, |
|
|
16856
|
Mon May 16 13:22:59 2022 |
yuta | Update | BHD | REFL and AS paths aligned at AP table | After Xarm and Yarm were aligned by Anchal
et al, I aligned AS and REFL path
in the AP table. |
|
|
16857
|
Mon May 16 14:46:35 2022 |
Tommy | Update | Electronics | RFSoC MTS Work | We followed the manual's guide for
setting up MTS to sync on external signal.
In the xrfdc package, we update the RFdc |
|
|
16858
|
Mon May 16 16:13:01 2022 |
Yehonathan | Update | BHD | Initial BHD modeling: Damped suspension model | I was finally able to set up a stable suspension
model with the help of Yuta and I'm now
ready to start doing some MICH noise |
|
|
16859
|
Mon May 16 19:14:17 2022 |
Anchal | Update | BHD | Camera set on AS path and BHDBS output path | [Anchal, Paco, Yuta]
We aligned AS path avoiding
any clipping to the AP table where we setup |
|
|
16860
|
Tue May 17 18:43:38 2022 |
Anchal | Update | BHD | Placed SRM in ITMY Chamber | [Anchal, Paco, Yuta]
SRM Placement
SRM
was moved from its parked location to the |
|
|
16861
|
Wed May 18 08:30:29 2022 |
Paco | Update | BHD | SRM OpLev | [Paco]
The SRM Oplev injection and detection
paths interfere heavily with the POY11. Due |
|
|
16862
|
Wed May 18 09:02:52 2022 |
Anchal | Update | BHD | WFS1 PD centered | I centered WFS1 PD so that IMC WFS Servo
does not go out of range.
|
|
|
16863
|
Wed May 18 17:23:15 2022 |
Anchal | Update | BHD | Placed PRM in BS Chamber | [Anchal, Paco, Yuta, JC]
SRM Oplev setup
We
setup SRM oplev path for the aligned position |
|
|
16864
|
Thu May 19 08:51:40 2022 |
Paco | Update | BHD | SRM OpLev | [Paco, Ian]
After agreement from Yuta/Anchal,
I moved POYM1 yaw to clear the aforementioned |
|
|
16865
|
Thu May 19 18:56:08 2022 |
yuta | Update | BHD | Current OSEM sensor values with all the suspensions aligned | Current OSEM sensor values with all the
suspensions aligned are attached.
For 'BS','ITMX','ETMX','ITMY','ETMY','PRM','SRM','LO1','LO2', |
|
|
16866
|
Thu May 19 19:05:59 2022 |
Anchal | Update | BHD | BS Chamber all work finished, BHD path setup | [Anchal, Paco, Yuta]
BS Oplev Path
The
changed position of PRM (40m/16863) |
|
|
16867
|
Fri May 20 12:42:23 2022 |
Tega | Update | VAC | Door installation on the end stations | [JC, Tega, Chub]
Today we installed the 200 lbs
doors on the end station chambers. |
|
|
16868
|
Fri May 20 20:03:48 2022 |
Paco | Update | BHD | ITMY chamber work finished - LO and AS overlapped | [Paco, Anchal, Yuta]
Today, in short we:
Recovered alignment of |
|
|
16869
|
Mon May 23 13:16:59 2022 |
Paco | Update | BHD | End of vent - checks | [Paco, Yuta]
Prep for closing and pump down.
Aligned IFO to maximize |
|
|
16870
|
Tue May 24 10:37:09 2022 |
Tega | Update | VAC | added 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 |
JC | Update | VAC | Beginning Pumpdown | [JC, Jordan, Paco, Chub]
We began with the pumpdown this
morning. We started with the annulus volume |
|
|
16872
|
Tue May 24 15:21:13 2022 |
Anchal | Update | BHD | Freeswing tests of new SOS started | I modified the script freeSwing.py
to use damping loop output switches to free
the optic instead of watchdog or coil output |
|
|
16873
|
Wed May 25 16:38:27 2022 |
yuta | Update | SUS | Suspensions quick health check | [JC, Yuta]
We did a quick health check of
suspesions after the pump down. |
|
|
16876
|
Thu May 26 15:55:10 2022 |
Tommy | Update | Electronics | RFSoC Power Spectrum | Finished building power spectrum analyzer
for the RFSoC. There are two things that
I would like to address down the road. First |
|
|
16878
|
Fri May 27 12:15:30 2022 |
JC | Update | Electronics | CRT TV / Monitor 6 | [Yehonathan, Paco, Yuta, JC]
As we were cleaning up this morning,
we heard a high pitch sound that turned into |
|
|
16879
|
Fri May 27 15:53:17 2022 |
Tommy | Update | Electronics | RFSoC MTS Work | With some help from the forums, we printed
the status of the DAC MTS sync and were able
to determined that our board's vivado |
|
|
16882
|
Tue May 31 14:44:02 2022 |
JC | Update | Electronics | CRT TV / Monitor 6 | [Paco, JC]
Paco and I fixed the ethernet cable
which was hanging. We stopped models c1x07 |
|
|
16883
|
Tue May 31 17:30:01 2022 |
Yehonathan | Update | BHD | Green shutters fixed | [Paco, Yehonathan]
We fixed the slow control over
the green beam shutters. |
|
|
16884
|
Wed Jun 1 11:56:28 2022 |
yuta | Update | ALS | Shutter driver for GRY replaced | [JC, Yuta]
We replaced a shutter driver for GRY |
|
|
16888
|
Fri Jun 3 15:22:51 2022 |
yuta | Update | LSC | Both arms locked with POY/POX, IR beam centered on TMs with ASS | [JC, Paco, Yuta]
We locked both Y and X arms with POY11 |
|
|
16889
|
Fri Jun 3 17:42:50 2022 |
yuta | Update | LSC | MICH locks with AS55_Q | AS path at AP table as re-aligned and confirmed
that MICH can be locked with AS55 Q.
|
|
|
16890
|
Sun Jun 5 19:46:40 2022 |
Paco | Update | LSC | Fixed IMC Trans sum issue | [Paco]
Fixed the issue below:
|
|
|
16891
|
Mon Jun 6 09:37:16 2022 |
JC | Update | SUS | InMatCalc | [Paco, JC]
Paco and I attempted to calculate
the input matrices from May 24, 2022, but |
|
|
16892
|
Mon Jun 6 13:35:11 2022 |
Paco | Update | LSC | First calibrated spectra of MICH at AS55 Q | [Paco, Yuta]
On the topic of high AS55_Q RFPD
offset, it seems it stems from a small residual |
|
|
16894
|
Mon Jun 6 21:01:22 2022 |
yuta | Update | IMC | MC1 OSEM sensor sign flipped, MC1/2/3 free swinging overnight for inmat diagonalization | [Tomislav Andric, Rana, Yuta]
We put -1 to MC1 OSEM sensor gains
and re-tuned MC1 damping. |
|
|
16895
|
Mon Jun 6 22:08:55 2022 |
Koji | Update | IMC | MC1 OSEM sensor sign flipped, MC1/2/3 free swinging overnight for inmat diagonalization | Note that MC1 has a new style sat amp because
the old one collapsed. The sign flip might
have been the result of the replacement |
|
|
16896
|
Tue Jun 7 17:26:21 2022 |
yuta | Update | SUS | ITMY ULCOIL mystery not solved | [Paco, Yuta]
We investigated the ITMY ULCOIL
issue (40m/16873). |
|
|
16897
|
Tue Jun 7 18:32:46 2022 |
Deeksha | Update | Electronics | Noise Budgeting ADC (of redpitaya) | Made plots on i/p noise of redpitaya .
Need to reconsider sampling frequency (to
improve plot at lower freq) |
|
|
16898
|
Tue Jun 7 19:13:12 2022 |
yuta | Update | SUS | Agreement on suspension damping loop polarity conventions | Anchal, Paco and I agreed to follow
the polarity conventions below for suspension
damping loops. |
|
|
16899
|
Tue Jun 7 19:40:45 2022 |
Anchal | Update | SUS | ITMY changed output matrix to disable use of UL coil | Since UL coil actuation is lost, we modified
the output matrix of ITMY to use only UR,
LR and LL face coils for POS, PIT and YAW |
|
|
16900
|
Wed Jun 8 16:03:12 2022 |
Koji | Update | VAC | Power Outage 220608: Vacuum Recovery | === Observation ===
TP1/2/3 failed. AUX RP
did not survive the power outage (of course)
=== |
|
|
16901
|
Wed Jun 8 16:33:26 2022 |
Koji | Update | General | Power Outage 220608: HVAC restored | I found the HVACs for the ends were off.
They were turned back on. |
|
|
16902
|
Wed Jun 8 16:57:46 2022 |
Koji | Update | IOO | Power Outage 220608: IMC restored | The IMC alignment was restored and the
IMC is nicely locking.
Once the vacuum level recovered |
|
|
16903
|
Wed Jun 8 18:16:20 2022 |
yuta | Update | SUS | ITMY ULCOIL mystery: Coil driver swap test | To see if the ULCOIL channel of the ITMY coil driver
is working or not, I swapped ITMY coil |
|
|
16904
|
Thu Jun 9 23:08:39 2022 |
rana | Update | SUS | ITMY ULCOIL mystery: Coil driver swap test | what was the result of the inductance measurement?
should be ~3.3 mH as measured from the flannge
or cable that goes to the flange from sat |
|
|
16905
|
Fri Jun 10 13:02:14 2022 |
yuta | Update | SUS | ITMY ULCOIL mystery: Coil driver swap test | ITMY ULCOIL was measured to have ~3.3 mH
as measured from the flange. RTFE 40m/16896
. |
|
|
16906
|
Fri Jun 10 13:52:22 2022 |
JC | Update | OPLEV Tables | ITMX, ITMY, and Vertex Table Beam Paths | I have at taken photos and added arrows
which signify the beam paths for ITMX,
ITMY, and Vertex Oplev tables. |
|
|
16907
|
Fri Jun 10 15:02:04 2022 |
yuta | Update | SUS | Servo gain sign flipped for MC1 WFS relief | The servo gain for MC1 in /opt/rtcds/caltech/c1/Git/40m/scripts/MC/WFS/reliefWFS
was flipped to account for COIL_GAIN flip
done in 40m/16898. |
|
|
16908
|
Fri Jun 10 15:04:23 2022 |
rana | Update | SUS | ITMY ULCOIL mystery: Coil driver swap test | Its good that the inductance test passed.
This means that the coil is OK. How does
the inspection photo look? This is the one |
|
|
16909
|
Fri Jun 10 20:11:46 2022 |
yuta | Update | ASC | Yarm ASS re-tuning in progress | [Anchal, Yuta]
We tried to re-tune Yarm ASS today. |
|