| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
4697
|
Thu May 12 00:59:45 2011 |
ryan, rana | Update | PSL | Return of the PSL temperature box | The PSL temperature box has returned to
service, with some circuit modifications.
The 1k resistors on all the temp. sensor |
|
|
4696
|
Wed May 11 23:02:52 2011 |
valera | Update | ASS | Dither angular stabilizitaion system update | This is what was done in past two days:
- The ETMY and ITMY pitch and yaw
dofs are modulated at 40, 44, 42, 46 Hz respectively |
|
|
4695
|
Wed May 11 22:54:53 2011 |
Jenne | Update | Treasure | ETMY trans QPD installed | I put the ETMY trans QPD in.
The ETMY trans beam was already going
toward the TRY DC PD, and a CCD camera. |
|
|
4694
|
Wed May 11 22:52:55 2011 |
kiwamu | Update | LSC | status update and plan | Rana forced
me to write this entry for summary because |
|
|
4693
|
Wed May 11 21:58:30 2011 |
rana | Update | SUS | ETMX_OPLEV : He-Ne replaced |
|
|
|
4692
|
Wed May 11 17:20:24 2011 |
kiwamu | Configuration | IOO | loop diabled on PZT2 | [Valera / Kiwamu]
|
|
|
4691
|
Wed May 11 17:10:04 2011 |
kiwamu | Configuration | Electronics | fixed : MC3 LL PD has no signal | [Valera / Kiwamu]
It was because of a loose connection.
Pushing the connector solved the issue. |
|
|
4690
|
Wed May 11 16:04:36 2011 |
Larisa Thorne | Configuration | Electronics | Jenne-Seismometer LPF project | The schematic for the seismometer box from
this last
time has been updated... |
|
|
4689
|
Wed May 11 13:54:32 2011 |
steve | Update | LSC | LSC power supplies | Aux- rack _1Y2 is just behind 1Y3
It contains Kepco Analoge DC power supplies
for +- 5, 15 and 24V |
|
|
4688
|
Wed May 11 11:44:52 2011 |
kiwamu | Update | SUS | f2p filters installed on ITMY | New f2p
filters were installed on |
|
|
4687
|
Wed May 11 11:24:59 2011 |
steve | Update | SUS | SRM-oplev qpd is back |
|
|
|
4686
|
Wed May 11 11:05:45 2011 |
steve | Update | SUS | ETMX_OPLEV : He-Ne replaced |
|
|
|
4685
|
Wed May 11 10:49:16 2011 |
valera | Configuration | Electronics | MC3 LL PD has no signal | Yesterday we found that MC3 OSEM LL PD
did not have a sensible signal - the readback
was close to zero and it was making MC move |
|
|
4684
|
Wed May 11 00:23:21 2011 |
kiwamu | Update | ASC | Y arm and beam pointing alignment | [Jamie / Valera / Kiwamu]
The incident |
|
|
4683
|
Tue May 10 23:14:01 2011 |
kiwamu | Update | SUS | ETMX_OPLEV : He-Ne laser dead ? | I
found that a He-Ne laser which has been used
for ETMX_OPLEV was NOT giving the light. |
|
|
4682
|
Tue May 10 22:56:17 2011 |
kiwamu | Update | SUS | f2p filters installed on ETMY | New f2p filters
were installed on ETMY. |
|
|
4681
|
Tue May 10 20:57:05 2011 |
rana | Update | PSL | PSL reference cavity temperature box modifications : after 24 hours still OK |
|
|
|
4680
|
Tue May 10 16:45:19 2011 |
josephb | Update | CDS | c1ass now receiving AS55I from c1lsc | [Valera, Joe]
We added a cdsPCIx_SHMEM connection
between the c1lsc and c1ass models. |
|
|
4679
|
Tue May 10 16:42:49 2011 |
josephb | Update | CDS | New upconversion model (c1uct) | [Ryan, Joe]
Ryan added the c1uct (upconversion
tester) model to the c1ioo machine. |
|
|
4678
|
Tue May 10 11:14:44 2011 |
steve | Update | PSL | PSL-QPD_ANG qpd optimized | Valera and I placed F 572.7 mm lens ~15
cm away from the ang qpd (in
the same mount with ND filter) so that two |
|
|
4677
|
Tue May 10 10:06:23 2011 |
josephb | Update | PSL | Fixed channel names for PSL QPDs, fixed saturation, changed signs | I added calculation entries to the /cvs/cds/caltech/target/c1iool0/c1ioo.db
file which are named C1:IOO-QPD_*_*, as the
channels were originally named. These |
|
|
4676
|
Tue May 10 09:05:49 2011 |
Koji | Update | General | aLIGO BBPD / Green PD investigation | BBPD update
- The BBPD circuit has been constructed
on the aLIGO BBPD board |
|
|
4675
|
Tue May 10 01:39:41 2011 |
Suresh | Update | RF System | RF source troubles | Today after Steve and I finished the RF
cabling work for the day, Kiwamu noticed
that there were no RF signals to be seen. |
|
|
4674
|
Tue May 10 00:44:52 2011 |
valera | Update | IOO | MC2 centering | Kiwamu, Koji, Valera
We centered the beam on MC2 in pitch
by moving the MC1,2,3 in the following combination |
|
|
4673
|
Tue May 10 00:31:28 2011 |
kiwamu | Update | ASC | IFO alignment plan | The alignment of the interferometer
goes basically step by step.
Tuesday will be an alignment day. |
|
|
4672
|
Mon May 9 20:30:20 2011 |
rana | Update | PSL | PSL reference cavity temperature box modifications | I re-installed the box (@ ~8:15) after
reflowing some of the solder joints. I will
observe it over night and then remove the |
|
|
4671
|
Mon May 9 18:54:29 2011 |
kiwamu | Update | LSC | triggerd locking logic : screen prepared | I made a new medm screen for the triggering
logics. Have fun.
I put a button on C1LSC.adl to invoke |
|
|
4670
|
Mon May 9 17:23:25 2011 |
Suresh | Update | RF System | RF Cables near LSC Rack | [Steve, Suresh]
We started to clean up the RF cables
(heliax and PD interface cables) at |
|
|
4669
|
Mon May 9 17:21:13 2011 |
Jamie | Bureaucracy | CDS | !!!!REMEMBER TO COMMIT YOUR MODIFICATIONS!!!! | Also, remember to update the svn working
copy before you begin doing any work, to
make sure you're working on the most recent |
|
|
4668
|
Mon May 9 16:58:23 2011 |
Jamie | Bureaucracy | CDS | !!!!REMEMBER TO COMMIT YOUR MODIFICATIONS!!!! | Whenever you modify any of the front-end
code in /opt/rtds/caltech/c1/userapps, such
as models, scripts or medm screens, REMEMBER |
|
|
4667
|
Mon May 9 16:12:49 2011 |
Jamie | Configuration | CDS | canonicalize paths to core and userapps | I have updated the /opt/rtcds paths to
reflect the new specification of the CDS
aLIGO code release procedures document. |
|
|
4666
|
Mon May 9 15:21:36 2011 |
josephb | Update | PSL | Fixed channel names for PSL QPDs, fixed saturation, changed signs | [Valera,
Joe]
Software |
|
|
4665
|
Mon May 9 13:14:48 2011 |
josephb | Update | LSC | C1:LSC-TRIG_MTRX : wrong matrix size | [Joe,
Kiwamu]
There |
|
|
4664
|
Mon May 9 12:33:40 2011 |
kiwamu | Update | LSC | C1:LSC-TRIG_MTRX : wrong matrix size | I found
that C1:LSC-TRIG_MTRX has a wrong matrix |
|
|
4663
|
Mon May 9 09:37:51 2011 |
valera | Update | PSL | PSL and MC trends | The attached plot shows 7 day trends of
the MC and PMC power levels, PSL QPDs, and
temperature. The MC stayed locked for ~40 |
|
|
4662
|
Sun May 8 22:59:40 2011 |
rana | Update | PSL | PSL reference cavity temperature box modifications | I looked at the PSL temperature box. It
started out as D980400-B-C. Then it was revised
by Peter King as per the LHO mods E020247. |
|
|
4661
|
Sun May 8 17:29:01 2011 |
rana | Update | IOO | MC beam spot centering | It seems like the best option would be
to make the MCASS just adjust the SUS biases
and center the beams on the suspended optics. |
|
|
4660
|
Sun May 8 16:32:52 2011 |
valera | Update | IOO | MC beam spot centering | Kiwamu told me that the CDS matrix
notation has changed and the 40m front end
code has changed since February. I changed |
|
|
4659
|
Sat May 7 18:08:54 2011 |
valera | Update | IOO | MC beam spot centering script | I tried to run the scripts/senseMCdecentering
to check the centering of the MC beam spots
on the mirrors. The script (csh) produces |
|
|
4658
|
Sat May 7 12:57:54 2011 |
Koji | Summary | General | aLIGO BBPD / Green PD investigation | The RF amplifier of the prototype BBPD
has been replaced from ERA-5SM to MAR-6SM. |
|
|
4657
|
Sat May 7 10:59:11 2011 |
Suresh | Update | RF System | RF Source filters changed |
The
SLP-50 filters which were on the 55 MHz lines |
|
|
4656
|
Sat May 7 02:52:53 2011 |
kiwamu | Update | LSC | TRY photo diode installed | [Suresh / Kiwamu]
We
installed the TRY photo diode (Thorlabs one) |
|
|
4655
|
Fri May 6 17:11:55 2011 |
steve | Update | SUS | SRM-oplev cable | The SRM qpd cable was removed from the
BS-table. It's path was changed from 1x4
to ITMY-table following the inner cable tray. |
|
|
4654
|
Fri May 6 15:59:40 2011 |
steve | Update | VAC | TP3 fore pump replaced | Dry fore pump of TP3 replaced by brand
new Varian SH-110 at 1.1 Torr_75,208
hrs |
|
|
4653
|
Fri May 6 15:42:55 2011 |
valera | Metaphysics | IOO | Input mode cleaner length and 11 MHz modulation frequency | After Kiwamu set the REFL11 phases
in the PRMI configuration (maximized PRM->REFL11I
reesponse) I tried to measure the MC length |
|
|
4652
|
Fri May 6 14:59:36 2011 |
Leo Singer | Configuration | SUS | Tuning ITMY bandstop | I tuned the ITMY bandstops -- 'before'
and 'after' spectra attached. Note
that the after the tuning, the bounce mode |
|
|
4651
|
Fri May 6 10:20:00 2011 |
steve | Summary | SAFETY | 2011 safety audit | The emphasis of this annual safety audit
was on safe electrical housekeeping
on March 3, 2011 |
|
|
4650
|
Fri May 6 06:36:18 2011 |
Suresh | Update | RF System | PD DC signals at each port connected | We now
have the DC signal from three PDs available
in the ADC channels 14,15 and 16. The |
|
|
4649
|
Fri May 6 01:27:12 2011 |
Koji | Summary | General | aLIGO BBPD / Green PD investigation | Minicircuits
ERA-5SM was used for the RF
amp of the BBPD. This amp is promising |
|
|
4648
|
Thu May 5 20:47:41 2011 |
Koji | Update | PSL | PMC aligned | The PMC exhibited the reduction of the
transmission, so it was aligned.
The misalignment was not the angle |
|