| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16396
|
Tue Oct 12 17:20:12 2021 |
Anchal | Summary | CDS | Connected c1sus2 to martian network | I connected c1sus2 to the martian network
by splitting the c1sim connection with a
5-way switch. I also ran another ethernet |
|
|
16398
|
Wed Oct 13 11:25:14 2021 |
Anchal | Summary | CDS | Ran c1sus2 models in martian CDS. All good! | Three extra steps (when adding
new models, new FE):
Chris
pointed out that the sudo command in c1sus2 |
|
|
16407
|
Fri Oct 15 16:46:27 2021 |
Anchal | Summary | Optical Levers | Vent Prep | I centered all the optical levers on ITMX,
ITMY, ETMX, ETMY, and BS to a position where
the single arm lock on both were best aligned. |
|
|
16416
|
Wed Oct 20 11:16:21 2021 |
Anchal | Summary | PEM | Particle counter setup near BS Chamber | I have placed a GT321 particle counter
on top of the MC1/MC3 chamber next to the
BS chamber. The serial cable is connected |
|
|
16417
|
Wed Oct 20 11:48:27 2021 |
Anchal | Summary | CDS | Power supple configured correctly. | This was horrible! That's my bad, I
should have checked the configuration before
assuming that it is right. |
|
|
16420
|
Thu Oct 21 11:41:31 2021 |
Anchal | Summary | PEM | Particle counter setup near BS Chamber | The particle count channel names were changes
yesterday to follow naming conventions used
at the sites. Following are the new names: |
|
|
16424
|
Mon Oct 25 13:23:45 2021 |
Anchal | Summary | BHD | Before photos of BSC | [Yehonathan, Anchal]
On thursday Oct 21 2021, Yehonathan
and I opened the door to BSC and took some |
|
|
16425
|
Mon Oct 25 17:37:42 2021 |
Anchal | Summary | BHD | Part I of BHR upgrade - Removed optics from BSC | [Anchal, Paco, Ian]
Clean room etiquettes
Two
people in coverall suits, head covers, masks |
|
|
16431
|
Wed Oct 27 16:27:16 2021 |
Anchal | Summary | BHD | Part II of BHR upgrade - Prep | [Anchal, Paco, Ian]
Before we could start working on
Part II, which is to relocate TT2 to new |
|
|
16432
|
Wed Oct 27 16:31:35 2021 |
Anchal | Summary | BHD | Part III of BHR upgrade - Removal of PR2 Small Suspension | I went inside the ITMX Chamber to read
off specs from PR2 edge. This was required
to confirm our calculations of LO power for |
|
|
16433
|
Wed Oct 27 16:38:02 2021 |
Anchal | Summary | BHD | Part II of BHR upgrade - Relocation of TT2 and MMT1/2 alignment | [Anchal, Paco]
We opened BSC and Injection Chamber
doors. We removed two stacked counterweights |
|
|
16438
|
Thu Oct 28 17:01:54 2021 |
Anchal | Summary | BHD | Part III of BHR upgrade - Adding temp fixed flat mirror for PR2 | [Anchal, Paco, Ian]
We added a Y1-2037-0 mirror
(former IPPOS SM2 mirror) on a fixed mount |
|
|
16440
|
Fri Oct 29 14:39:37 2021 |
Anchal | Summary | BHD | 1Y1 cleared. IY3 ready for C1SUS2 I/O and FE. | [Anchal, Paco]
We cleared 1Y1 rack today removing
the following items. This stuff is sitting |
|
|
16450
|
Fri Nov 5 12:21:16 2021 |
Anchal | Summary | BHD | Part VI of BHR upgrade - Removal of ITMYC optics | Today I opened the ITMY chamber and removed
the following optics and placed them in Xend
flow bench (See attachment 1-3 for updated |
|
|
16463
|
Tue Nov 9 19:02:47 2021 |
Anchal | Summary | BHD | 1Y0 Populated and 1Y1,1Y0 powered | [Anchal, Paco]
Today we populated 4 Sat Amp boxes
for LO1, Lo2, AS1, and AS4, 2 BO boxes for |
|
|
16474
|
Wed Nov 17 17:37:53 2021 |
Anchal | Update | General | Placed Nodus and fb1 on UPS power | Today I placed nodus and fb1 on UPS battery
backed supply. Now power glitches should
not hurt our cds system. |
|
|
16476
|
Thu Nov 18 15:16:10 2021 |
Anchal | Update | General | Moved Chiara to 1X7 above nodus powered with same UPS | [Anchal, Paco]
We moved chiara to 1X7 above nodus
and powered with same UPS from a battery |
|
|
16479
|
Mon Nov 22 17:42:19 2021 |
Anchal | Update | General | Connected Megatron to battery backed ports of another UPS | [Anchal, Paco]
I used the UPS that was providing
battery backup for chiara earlier (a APS |
|
|
16480
|
Tue Nov 23 18:02:05 2021 |
Anchal | Update | IMC | MC autolocker shifted to python3 script running in docker | I finished copying over the current autolocker
bash script functionality into a python script |
|
|
16509
|
Wed Dec 15 16:11:38 2021 |
Anchal | Summary | BHD | Part VIII of BHR upgrade - Placed LO1 | [Anchal, Yehonathan, Paco]
Today we opened ITMX chamber
and removed the following optics and placed |
|
|
16512
|
Thu Dec 16 12:21:16 2021 |
Anchal | Update | BHD | Coil driver test failed for S2100619-v1 | Today I found one of the coil driver boards,
S2100619
failed the test on CH2. There appears to |
|
|
16514
|
Thu Dec 16 15:32:59 2021 |
Anchal | Update | BHD | Finished Coil driver (odd serial number) units tests | We have completed modifications and testing
of the HAM Coil driver D1100687 units with
serial numbers listed below. The DCC |
|
|
16517
|
Thu Dec 16 17:57:17 2021 |
Anchal | Update | BHD | Finished Coil driver (odd serial number) units tests | S2100619 was fixed
by Koji and it passed the test after
that. |
|
|
16525
|
Sun Dec 19 07:52:51 2021 |
Anchal | Update | SUS | Remaining task for 2021 | The I/O chassis reassigns the ADC and DAC
indices on every power cycle. When we moved
it, it must have changed it from the order |
|
|
16527
|
Mon Dec 20 14:10:56 2021 |
Anchal | Update | BHD | All coil drivers ready to be used, modified and tested | Koji found some 68nF caps from Downs and
I finished modifying the last remaining coil
driver box and tested it. |
|
|
16530
|
Tue Dec 21 16:52:39 2021 |
Anchal | Summary | Electronics | In-air Sat Amp to Vacuum Flange cables laid for 7 new SOS | [Anchal, Yehonathan, Chub]
We today laid down 14 70 ft long
DB25 cables from 1Y1 (6), 1Y0 (8) to ITMY |
|
|
16533
|
Wed Dec 22 17:40:22 2021 |
Anchal | Summary | CDS | c1su2 model updated with SUS damping blocks for 7 SOSs | [Anchal, Koji]
I've updated the c1su2 model
today with model suspension blocks for the |
|
|
16541
|
Tue Jan 4 18:26:59 2022 |
Anchal | Update | BHD | Tested 2" PR2 candidates transmission | I used the rejected light from the PBS
after the motorized half-wave plate between
PMC and IMC injection path (used for input |
|
|
16543
|
Wed Jan 5 17:46:04 2022 |
Anchal | Update | BHD | Tested 2" PR2 candidates transmission | I tested 2 more optics today, the old PR2
that we took out and another optic I found
in QIL. Both these optics are also not good |
|
|
16545
|
Thu Jan 6 11:54:20 2022 |
Anchal | Summary | BHD | Part IX of BHR upgrade - Placed AS1 and AS4 | [Paco (Vacuum Work), Anchal]
Today we opened the ITMY Chamber
and installed suspended AS1 and AS4 in their |
|
|
16546
|
Thu Jan 6 12:52:49 2022 |
Anchal | Update | CDS | Yearly DAQD fix 2022! | Just as predicted, all realtime models
reported "0x4000" error. Read the
parent post for more details. I fixed this |
|
|
16552
|
Thu Jan 6 21:04:41 2022 |
Anchal | Summary | BHD | Part VIII of BHR upgrade - LO1 OSEMs inserted | [Anchal, Koji] Part of elog:
40m/16549.
The magnets on the mirror face |
|
|
16554
|
Fri Jan 7 16:17:42 2022 |
Anchal | Summary | BHD | Part IX of BHR upgrade - Placed AS1 and AS4 filters | [paco]
Added input filters, input matrix,
damping filters, output matrix, coil filters, |
|
|
16555
|
Fri Jan 7 17:54:13 2022 |
Anchal | Update | BHD | PR2 Sat Amp has a bad channel | [Anchal, Paco]
Yesterday we noticed that one of
the ADC channels was overflowing. I checked |
|
|
16560
|
Mon Jan 10 13:35:52 2022 |
Anchal | Update | BHD | PR2 Sat Amp has a bad channel | The unit was tested before by Tege. The
test included testing the testpoint voltages
only. He summarized his work in |
|
|
16562
|
Mon Jan 10 14:52:51 2022 |
Anchal | Summary | BHD | LO1 OSEMs roughly calibrated and noise measured | I used the open light level output of 908
for ITMX side OSEM from 40m/16549
to roughly calibrate cts2um filter module |
|
|
16565
|
Mon Jan 10 17:04:47 2022 |
Anchal | Update | BHD | AS1 Sat Amp CH2 had offset | We found that there was a small offset
(~300 mV) at TP6 and TP8, in PD2 circuit
(CH2 of the board). I replaced U3 AD822ARZ |
|
|
16566
|
Mon Jan 10 18:20:45 2022 |
Anchal | Update | BHD | Tested 2" PR2 candidates transmission | I tested 2 more optics found by Paco and
Yehonathan in QIL.
|
|
|
16567
|
Mon Jan 10 18:36:41 2022 |
Anchal | Summary | BHD | LO1 free swinging test set to trigger | LO1 is set to go through a free swinging
test at 1 am tonight. We have used this script
(scripts/SUS/InMatCalc/freeSwing.py) reliably |
|
|
16572
|
Tue Jan 11 12:19:12 2022 |
Anchal | Summary | BHD | LO1 Input Matrix Diagonalization performed. | The frree swinging test was successful.
I ran the input matrix diagonalization code
(scripts/SUS/InMAtCalc/sus_diagonalization.py) |
|
|
16575
|
Tue Jan 11 15:21:16 2022 |
Anchal | Update | BHD | PR2 transmission calculation | I did this simple calculation where I assumed
1W power from laser and 10% transmission
past IMC. We would go ahead with V6-704/V6-705 |
|
|
16577
|
Tue Jan 11 18:18:29 2022 |
Anchal | Summary | BHD | Attempted OSEM installation on AS1 | [Anchal, Paco, Yehonathan]
Connected in-cir cable to new flange
on ITMY Chamber |
|
|
16578
|
Tue Jan 11 18:40:25 2022 |
Anchal | Summary | BHD | AS1 Sat Amp has a PCB issue | AS1
Sat Amp (S2100741) has a critical PCB
issue on it's Ch5-8 board S2100548. This |
|
|
16579
|
Thu Jan 13 09:48:41 2022 |
Anchal | Summary | BHD | AS1 Sat Amp fixed | I fixed the issue in AS1
Sat Amp (S2100741) by using a razor blade.
I cut the short between the two places, cleaned |
|
|
16580
|
Thu Jan 13 12:24:08 2022 |
Anchal | Summary | BHD | AS1 SD and LR magnets broke | [Anchal (vacuum work), Paco (outside)]
After the AS1 Sat Amp fix (40m/16579),
we today were able to tune all OSEMs to the |
|
|
16581
|
Thu Jan 13 12:29:27 2022 |
Anchal | Summary | BHD | AS4 LR magnet broke | After the debacle with AS1 (40m/16580),
we decided the put the PEEK earthquake stop
by first removing the lower OSEM plate and |
|
|
16583
|
Thu Jan 13 17:10:55 2022 |
Anchal | Update | BHD | PR2 transmission calculation | I corrected the calculation by adding losses
by the arm cavity ends times the arm cavity
finesse and also taking into account the |
|
|
16585
|
Fri Jan 14 11:00:29 2022 |
Anchal | Update | BHD | PR2 transmission calculation | Yeah, I counted the loss from arm cavities
as the transmission from ETMs on each bounce.
I assumed Michelson to be perfectly aligned |
|
|
16586
|
Fri Jan 14 12:01:21 2022 |
Anchal | Update | Electronics | BS & ITMY feedthroughs labeled and connected to Sat Amps | I labeled all the newly installed flanges
and connected the in-air cables (40m/16530)
to appropriate ports. These cables are connected |
|
|
16587
|
Fri Jan 14 13:46:25 2022 |
Anchal | Update | BHD | PR2 transmission calculation updated | I updated the arm cavity roundtrip losses
due to scattering. Yehonathan told me that
arm cavity looses 50ppm every roundtrip other |
|