| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16759
|
Wed Apr 6 12:03:51 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - IR laser alignment on Yarm | [Anchal, Paco]
After Koji reduced the output resistors
on PR2/PR3 coil drivers, we got much better |
|
|
16758
|
Wed Apr 6 01:20:48 2022 |
Koji | Summary | BHD | Part IIa of BHR upgrade - IR laser alignment on Xarm | PR2/PR3 Output R for fame OSEMS reduced
from 1.2K to 1.2K//100Ohm
I |
|
|
16757
|
Tue Apr 5 18:15:06 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - IR laser alignment on Xarm | [Paco, Anchal, Ian, JC]
We attempted the alignment of IR
beam into the arm cavities. We used PR2 and |
|
|
16756
|
Mon Apr 4 17:03:47 2022 |
Anchal | Summary | CDS | c1susaux2 slow controls acromag chassis fixed and installed | [Anchal, JC, Ian, Paco]
We have now fixed all issues with
the PD mons of c1susaux2 chassis. The slow |
|
|
16755
|
Mon Apr 4 15:49:06 2022 |
Tega | Update | Optical Levers | Simplified sketch on BS table | I have updated the BS table using feedback
from Koji and Paco and the attached
pdf document is the latest iteration. |
|
|
16754
|
Sat Apr 2 15:46:13 2022 |
rana | Summary | PEM | Particle counter setup near BS Chamber | nice - please update the particle counter
page in the 40m wiki. Its probably years
out of date. |
|
|
16753
|
Fri Apr 1 22:22:29 2022 |
Koji | Update | Optical Levers | Simplified sketch on MC table | Possibility to swap BS and ITMX
tables:
BS table, which Tega said MC table, |
|
|
16752
|
Fri Apr 1 17:02:02 2022 |
Koji | Update | Optical Levers | Simplified sketch on MC table | We are supposed to have BS Oplev Beams.
We don't like the shallow angle reflections
(i.e. AOI>45deg). |
|
|
16751
|
Fri Apr 1 14:26:50 2022 |
Tega | Update | Optical Levers | Simplified sketch on MC table | Here is an early sketch
of the MC table.
|
|
|
16750
|
Fri Apr 1 14:26:19 2022 |
Ian MacMillan | Summary | PEM | Particle counter setup near BS Chamber | I mounted the particle counter over the
BS chamber attached to the cable tray as
seen in Attachment 1. The signal cable runs |
|
|
16749
|
Thu Mar 31 18:58:16 2022 |
Ian MacMillan | Summary | BHD | Part IIa of BHR upgrade - IR laser alignment on Xarm | [Ian, Paco]
We continued to try and lock the
IR laser to the x-arm. Last time we adjusted |
|
|
16748
|
Tue Mar 29 17:35:54 2022 |
Paco | Update | SUS | Damping fix on BS, AS4, PR2, and PR3 | [Ian, Paco]
We removed the "cheby"
filters from AS4, PR2 and PR3 which had been |
|
|
16747
|
Tue Mar 29 15:07:11 2022 |
Tega | Summary | VAC | Opening of MC and ETM chambers | [Anchal, Chub, Ian, Paco, Tega]
Today, we opened the MC chamber,
ETMX chamber and ETMY chamber. |
|
|
16746
|
Mon Mar 28 16:25:34 2022 |
Ian MacMillan | Update | SUS | ETMY SUS Electronics Replacement - Questions | The point of changing the gains was to
return the system to its origional state.
ie I wanted the over all gain of the physical |
|
|
16745
|
Sat Mar 26 13:04:38 2022 |
Paco | Summary | BHD | Part IIa of BHR upgrade - Green laser alignment on Yarm | I came for a bit to check on the "1Y0
burning smell" reported by Koji last
evening. I agree that there's a toasty |
|
|
16744
|
Fri Mar 25 18:20:28 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - Green laser alignment on Yarm | [Anchal, Paco, Shruti]
Today we found out that
the laser controller at the Yend had it's |
|
|
16743
|
Fri Mar 25 11:39:14 2022 |
Anchal | Update | SUS | ETMY SUS Electronics Replacement - Questions | After Ian updated the cts2um filters for
OSEM, shouldn't the damping gains be
increased back by factor of 10 to previos |
|
|
16742
|
Thu Mar 24 19:20:28 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - Green laser alignment on Yarm | [Anchal, Paco]
Uneloged: yesterday, Paco
and Ian tried locking the green laser on |
|
|
16741
|
Mon Mar 21 18:42:06 2022 |
Anchal | Summary | CDS | c1auxey1 slow controls issues | Another issue, Green Y Shutter can not
be controlled with the EPICS controls right
now. This needs to be investigated. |
|
|
16740
|
Mon Mar 21 18:24:07 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - Green laser alignment on Yarm | [Anchal, Tega]
We did the following alignment
steps on Yarm today: |
|
|
16739
|
Mon Mar 21 18:00:05 2022 |
Ian MacMillan | Update | BHD | XARM AUX alignment cont. | [Ian, Paco]
Continuing with the previous alignment
that we stoped on friday, we re set up my |
|
|
16738
|
Mon Mar 21 14:22:52 2022 |
Anchal | Update | SUS | ETMY Alignmnet offsets needed to be changed | I'm not sure why but the PIT and YAW
offset values of +2725 and -2341 were not
sufficient for the reflected OPLEV beam to |
|
|
16737
|
Fri Mar 18 19:10:51 2022 |
Anchal | Summary | CDS | c1auxey1 slow controls issues | I started the modbusIOC service on c1auxey1
and added PD variance channels for UR and
SD as well. There are unfortunately |
|
|
16736
|
Fri Mar 18 18:39:13 2022 |
Yehonathan | Summary | CDS | c1auxey1 slow controls acromag chassis installed, powered | {Yehonathan, Anchal}
We connected the c1auxey1 chassie
to the different boxes (coil drivers, SAT |
|
|
16735
|
Fri Mar 18 17:15:19 2022 |
Paco | Update | BHD | XARM AUX alignment cont. | [Paco, Ian]
First, we re-balanced the ITMX
OSEMs so that they would damp at around half-a-shadow. |
|
|
16734
|
Thu Mar 17 19:12:44 2022 |
Anchal | Summary | CDS | c1auxey1 slow controls acromag chassis installed, not powered | [Anchal, Tega]
We installed c1auxey1 computer
and the acromag chassis in 1Y4. The computer |
|
|
16733
|
Thu Mar 17 17:23:22 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - Green laser alignment | [Anchal, Yehonathan] (on Y Arm)
We first checked if the PZT mirrors
M1 and M2 can be controlled. They indeed |
|
|
16732
|
Thu Mar 17 16:50:53 2022 |
Paco | Update | BHD | XARM AUX alignment | [Ian, Paco]
We opened the ITMX chamber and
Inspected PR2 and LO1 and |
|
|
16731
|
Thu Mar 17 11:40:41 2022 |
Paco | Update | SUS | ETMY green PZT HV supply | [Anchal, Paco]
We installed a HV kepco power supply
for the green PZT steering the YAUX beam. |
|
|
16730
|
Tue Mar 15 18:45:12 2022 |
Anchal | Summary | BHD | Part X of BHR upgrade - BHDBS Path setup | [Paco, Anchal]
BS Chamber work
ASL
was positioned in nominal place.
PR3 |
|
|
16729
|
Tue Mar 15 18:42:37 2022 |
Anchal | Summary | BHD | Part IX of BHR upgrade - AS1 resuspended and OSEMs tuned | http://nodus.ligo.caltech.edu:8080/40m/16722
http://nodus.ligo.caltech.edu:8080/40m/16716 |
|
|
16728
|
Tue Mar 15 14:10:41 2022 |
Anchal | Summary | CDS | c1su2 model remade, reinstalled, restarted after the update | I have restarted c1su2 model with the connections
of Run Acquire switch to analog filters on
coil drivers. Following steps were taken: |
|
|
16727
|
Tue Mar 15 13:49:44 2022 |
Ian MacMillan | Bureaucracy | Treasure | New Screwdriver Bits | I have received the new screwdriver bits
that will work with the two electric screwdrivers
we have. I have distributed them in the 40m. |
|
|
16726
|
Tue Mar 15 11:52:34 2022 |
Anchal | Summary | CDS | c1su2 model updated for sending Run/Acquire Binary Output to Binary Interface card | I routed the XXX_COIL_DW signals from the
7 SOS blocks in c1su2.mdl (located at /cvs/cds/rtcds/userapps/trunk/sus/c1/models/c1su2.mdl)
to the binary outputs from the FE model. |
|
|
16725
|
Tue Mar 15 10:45:31 2022 |
Paco | Update | General | Assembled small in-vac optics | [Paco]
This morning I assembled LO3,
LO4 and AS3 (all |
|
|
16724
|
Mon Mar 14 12:20:05 2022 |
Anchal | Summary | CDS | c1susaux2 slow controls acromag chassis installed | [Anchal, Yehonathan, Ian]
We installed c1susaux2 acromag
chassis in 1Y0 with c1susaux2 computer. We |
|
|
16723
|
Fri Mar 11 16:43:03 2022 |
Ian MacMillan | Update | SUS | ETMY SUS Electronics Replacement | I updated the gain of the ct2um filter
on the OSEMS for ETMY and decreased their
gain by a factor of 9 from 0.36 to 0.04. |
|
|
16722
|
Thu Mar 10 10:05:49 2022 |
Paco | Update | SUS | AS1 free swing test | [Paco, Ian]
Begin free swinging test
for AS1 at 10:05 AM, set for ~ 2.04 hours.
Test |
|
|
16721
|
Thu Mar 10 09:39:59 2022 |
Jordan | Update | VAC | Leak Testing of New Manual Gate Valve - Attempt #2 | This morning Chub and I leak checked the
manual gate valve with the RGA and helium.
There was no change in the helium partial |
|
|
16719
|
Wed Mar 9 12:57:52 2022 |
Koji | Update | BHD | Simplified BHD readout sketch on ITMY table | - BHD beams were already mixed in the chamber.
So we don't need a BS on the table. (Probably
there is no BS already) |
|
|
16718
|
Wed Mar 9 11:52:18 2022 |
Yehonathan | Update | BHD | Simplified BHD readout sketch on ITMY table | I have made an editable
draw.io diagram of the planned simplified
BHD setup on the ITMY table (see attached). |
|
|
16717
|
Wed Mar 9 10:23:28 2022 |
Jordan | Update | VAC | Leak Testing of New Manual Gate Valve - Attempt #1 | Jordan, Chub, Paco
Chub and I went into the lab this
morning to leak check the new gate valve |
|
|
16716
|
Wed Mar 9 09:35:26 2022 |
Paco | Update | BHD | Re-balance of AS1 | [Paco]
AS1 is installed, OSEMs balanced,
and the optic damped successfully. We should |
|
|
16715
|
Tue Mar 8 19:29:36 2022 |
Paco | Update | BHD | Re-balance of AS1 | [Paco]
Installed AS1 in vacuum, near the
center of the table, and installed the OSEMs. |
|
|
16714
|
Tue Mar 8 12:24:13 2022 |
Yehonathan | Update | BHD | Re-susspension of AS1 | The gluing seemed to be successful. I assembled
the side block with the magnet on the adapter.
Paco helped me hang the adapter on the SOS |
|
|
16713
|
Tue Mar 8 12:08:47 2022 |
Tega | Update | VAC | Ongoing work to get the FRG gauges readouts to EPICs channels | OMG, it worked! It was indeed a calibration
issue and all I had to do was press the "OK"
button after selecting the "CAL" |
|
|
16712
|
Mon Mar 7 19:38:47 2022 |
Anchal | Summary | CDS | c1susaux2 slow controls issues | I tried to perform a simple enabling test
of coils using c1susaux2 modbus channels
but failed. I'm able to do the enabling |
|
|
16711
|
Mon Mar 7 18:53:16 2022 |
Koji | Update | BHD | Re-susspension of AS1 | Not sure if that small difference can cause
the alignment inability. Particularly, the
removed metal was just below the wire. This |
|
|
16710
|
Mon Mar 7 16:56:08 2022 |
Yehonathan | Update | BHD | Re-susspension of AS1 | {Paco, Yehonathan}
We tried to roughly balance the
adapter with two counterweights at the front, |
|
|
16709
|
Mon Mar 7 16:44:15 2022 |
Ian MacMillan | Update | SUS | ETMY SUS Electronics Replacement | Now that the ETMSUS is back up and running
I reran my measurements from the beginning
of the process. The results below show |
6x |