| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
3861
|
Thu Nov 4 15:27:33 2010 |
josephb, yuta | Update | CDS | c1ioo test points not working | Problem:
We can't access any of the c1ioo
computer testpoints. Dataviewer and |
|
|
3862
|
Thu Nov 4 17:24:49 2010 |
steve | Update | General | conflat flanges for MIT | 8 pieces of 10" CF blanks were shipped
to MIT |
|
|
3863
|
Thu Nov 4 17:53:29 2010 |
yuta | Update | CDS | primitive python script for A2L measurement | Summary:
I wrote |
|
|
3864
|
Thu Nov 4 17:57:27 2010 |
steve | Update | General | BeamScanner is working again | Koji, Suresh and Steve,
The beam scanner is back from repair.
Koji and Suresh helped to move the I/O address |
|
|
3865
|
Thu Nov 4 19:00:57 2010 |
Suresh | Update | Locking | Fibre coupling 1064nm light at the south-end table | The Fluke
Visual Fault locator (Visifault) arrived
and I used it to couple 1064nm light into |
|
|
3866
|
Thu Nov 4 19:26:51 2010 |
Suresh | Update | Locking | Changes to the Video MUX reversed | All the
temporary changes to the video cables and
the video MUX ( 3843 |
|
|
3867
|
Fri Nov 5 09:08:14 2010 |
steve | Update | SUS | epoxy | Physical Electronics: Vac-Seal #288-6000
arriving Monday. Our last bag used last week
had a p/n 1002003 with expiration date |
|
|
3868
|
Fri Nov 5 14:06:19 2010 |
yuta | Update | IOO | tried to align MC by A2L measurement | (Suresh, Kiwamu, Yuta)
Summary: |
|
|
3870
|
Fri Nov 5 16:40:22 2010 |
josephb, alex | Update | CDS | c1ioo now has working awgtpman | Problem:
We couldn't set testpoints on the
c1ioo machine. |
|
|
3871
|
Fri Nov 5 19:33:18 2010 |
Jenne | Update | Electronics | The beginnings of the new phase of the RF work | Joon Ho and I took a look at the RF stuff
that Alberto left, and we determined that
we've got most everything that we need. |
|
|
3874
|
Sat Nov 6 00:49:04 2010 |
Koji | Update | IOO | IMC table work | [Suresh, Koji]
- Removed MCT optics in the |
|
|
3878
|
Mon Nov 8 10:37:14 2010 |
Koji | Update | IOO | The 10% pick-off for MCREFL was replaced to a HR mirror | As MC2 Trans mon QPD is temporary removed
for fixing, we needed a reference for the
MC alignment. |
|
|
3879
|
Mon Nov 8 10:48:58 2010 |
kiwamu | Update | Green Locking | 80MHz VCO : PLL open loop looks good | |
|
|
3880
|
Mon Nov 8 14:30:15 2010 |
josephb, yuta | Update | CDS | Added LIGONDSIP setting to cshrc.40m | We added the following line to the cshrc.40m
file in the 64-bit linux and 32-bit linux
sections: |
|
|
3881
|
Mon Nov 8 16:03:46 2010 |
kiwamu | Update | Green Locking | 80MHz VCO : PLL open loop looks good |
|
|
|
3882
|
Mon Nov 8 18:30:33 2010 |
Suresh | Update | IOO | MC Trans Mon QPD gain increased by 50x | Increased
the transimpedance gain of the MC-Trans-Mon
QPD ckt |
|
|
3888
|
Wed Nov 10 22:29:42 2010 |
kiwamu | Update | IOO | misaligned the wideband EOM | For Yuta's
business, I intentionally misaligned the |
|
|
3889
|
Thu Nov 11 01:34:27 2010 |
Jenne | Update | SUS | New-Old ETM towers assembled | [Suresh, Jenne]
We have put together the new-old
ETM towers. These are the ones which |
|
|
3890
|
Thu Nov 11 02:17:27 2010 |
Kevin | Update | Electronics | REFL11 Photodiode Not Working | [Koji and Kevin]
I was trying to characterize the
REFL11 photodiode by shining a flashlight |
|
|
3893
|
Thu Nov 11 07:26:03 2010 |
Alberto | Update | Electronics | REFL11 Photodiode Not Working |
|
|
|
3896
|
Thu Nov 11 13:54:05 2010 |
kiwamu | Update | Green Locking | 80MHz VCO : about PLL hold-in range |
The hold-in |
|
|
3898
|
Thu Nov 11 17:47:36 2010 |
kiwamu | Update | Green Locking | 80MHz VCO : improve PLL hold-in range and put a boost | In order
to enlarge the hold-in range I modified the |
|
|
3899
|
Thu Nov 11 18:05:55 2010 |
valera | Update | PSL | PMC mode matching at full laser power | The
PMC mode matching was initially done at low
power ~150 mW. It was expected and found |
|
|
3900
|
Thu Nov 11 21:07:49 2010 |
josephb | Update | CDS | Plugged c1iscex into DAQ network - still causes network slowdown | I connected the c1iscex computer to the
dedicated DAQ network switch (located in
1X7). |
|
|
3902
|
Fri Nov 12 00:13:34 2010 |
Suresh | Update | SUS | ETM assembly started | [Jenne,
Suresh]
Selection |
|
|
3903
|
Fri Nov 12 00:42:11 2010 |
rana, koji | Update | IOO | MC alignment | We decided to ignore the computer script
outputs for the beam positions and use instead
the eyeball method to get the beam into the |
|
|
3904
|
Fri Nov 12 02:51:20 2010 |
Kevin | Update | Electronics | Photodiode Testing | [Jenne and Kevin]
I started testing the REFL55 photodiode.
With a light bulb, I saw ~270 mV of DC voltage |
|
|
3905
|
Fri Nov 12 06:10:24 2010 |
yuta | Update | IOO | MC aligned (without coil balancing) | Background:
Last night, we found that one
of DAC channels are poorly connected, so |
|
|
3906
|
Fri Nov 12 10:49:34 2010 |
josephb, valera | Update | CDS | Test of ADC noise | Test:
Look at the effects of the ADC voltage
range on the ADC noise floor. |
|
|
3909
|
Fri Nov 12 13:12:55 2010 |
kiwamu | Update | PSL | increased NPRO power | I maximized
the laser power by rotating the HWP after |
|
|
3910
|
Fri Nov 12 19:24:56 2010 |
Koji | Update | CDS | Test of ADC noise | [Koji Yuta]
We found one of the ADC cables were
left unconnected. This left the MC suspensions |
|
|
3912
|
Sat Nov 13 15:53:05 2010 |
yuta | Update | CDS | diagonalization of MC input matrix | Motivation:
MC is aligned from the A2L
measurement, but to do the beam centering |
|
|
3915
|
Sun Nov 14 11:56:59 2010 |
valera | Update | CDS | Test of ADC noise |
We missed |
|
|
3916
|
Sun Nov 14 16:26:31 2010 |
jenne, valera | Update | Electronics | SRM side OSEM noise with no magnet | We realized that the SRM sensors are connected
to the readout but just sitting on the BS
in vacuum table with no magnets and therefore |
|
|
3917
|
Sun Nov 14 16:40:46 2010 |
Jenne | Update | Treasure | Activities related to OSEM measurement | [Valera, Jenne]
We pondered the idea of clamping
the PRM optic to measure the OSEM noise. |
|
|
3918
|
Mon Nov 15 04:57:10 2010 |
rana | Update | Electronics | SRM side OSEM noise with no magnet | IF I believe this calibration and IF I
believe that the noise is the same with no
magnet in there, then its almost 1 |
|
|
3919
|
Mon Nov 15 11:13:12 2010 |
josephb | Update | CDS | Modified rc.local to not start mx_streams automatically | Problem:
c1iscex floods the network with about
1 gigabyte of error messages in a few seconds, |
|
|
3920
|
Mon Nov 15 11:52:22 2010 |
kiwamu | Update | Green Locking | PLL with real green signal | |
|
|
3921
|
Mon Nov 15 14:36:37 2010 |
Koji | Update | PSL | C1PSL rebooted? | Has C1PSL rebooted? Has burtrestore been
forgotten? Even without elog?
We found some settings are wrong |
|
|
3922
|
Mon Nov 15 14:42:01 2010 |
Aidan | Update | PSL | C1PSL rebooted? | Yeah. Joe and I rebooted c1psl a couple
of times this morning. I didn't realize the
burtrestore wasn't automatic. |
|
|
3923
|
Mon Nov 15 15:01:51 2010 |
kiwamu | Update | IOO | realigned the wideband EOM | Since we are going to lock the MC today,
I
aligned it back to the default place. |
|
|
3925
|
Mon Nov 15 16:09:44 2010 |
Jenne | Update | VAC | ETMX, ETMY, ITMY chambers opened | [Steve, Jenne, Suresh, Koji]
The remaining test mass chambers
have been opened, and have light doors in |
|
|
3926
|
Mon Nov 15 16:26:46 2010 |
josephb | Update | CDS | c1iscex is now running and the network hasn't died | Problem:
c1iscex was spamming the network
with error messages. |
|
|
3927
|
Mon Nov 15 17:10:59 2010 |
kiwamu | Update | Green Locking | PLL with real green signal | I
checked the slow servo and the PLL of 80MHz |
|
|
3928
|
Mon Nov 15 22:24:28 2010 |
Suresh | Update | SUS | Selection of Magnets | I have
selected a set of 16 magnets which have a
B field between 900 to 950 Gauss (5% variation) |
|
|
3929
|
Tue Nov 16 03:33:22 2010 |
yuta | Update | IOO | aligned Faraday, beam reached SM just before PRM | (Koji, Yuta)
|
|
|
3930
|
Tue Nov 16 09:02:54 2010 |
Aidan | Update | Green Locking | PID loop - calibration of SR620 output | [Aidan, Kiwamu]
Kiwamu and I roughly calibrated the
analogue output from the SR620 frequency |
|
|
3931
|
Tue Nov 16 10:47:45 2010 |
Aidan | Update | Green Locking | Rebooted c1psl - added new GRNBEAT_FREQ channel | I restored C1:PSL-126MOPA_126MON to its
original settings (EGUF = -410, EGUL = 410)
and added a new calc channel called C1:LSC-EX_GRNBEAT_FREQ |
|
|
3932
|
Tue Nov 16 12:47:30 2010 |
Aidan | Update | Green Locking | PID loop but no green | The PID loop is ready to be run on the
green beat note but, since the tanks are
open, there is no green transmission from |
|
|
3933
|
Tue Nov 16 15:32:18 2010 |
valera | Update | Electronics | OSEM noise at the output of the satellite box | I measured the SRM OSEM (no magnets
at the moment) noise out of the satellite
box with a SRS785 spectrum analyzer. I inserted |
|