| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2009
|
Sun Sep 27 15:25:58 2009 |
Koji | Update | PSL | SLOWscan result | Oh, AMPMON dependence could be an artifact
of the ND filter???
For my case, it should be real dependence |
|
|
2010
|
Sun Sep 27 23:21:14 2009 |
rana | Update | PSL | SLOWscan result |
|
|
|
2013
|
Mon Sep 28 17:39:34 2009 |
rob | Update | PSL | problems | The PSL/IOO combo has not been behaving
responsibly recently.
The first attachment is a 15 day |
|
|
2033
|
Thu Oct 1 10:23:00 2009 |
steve | Update | PSL | MC2 damping restored again | The EQ did not change the input beam
pointing. All back to normal, except MC2
wachdogs tripped again. |
|
|
2049
|
Mon Oct 5 09:31:05 2009 |
Alberto | Frogs | PSL | PSL laser accidentally turned off | Alberto, Steve,
While I was moving a cart near by
the PSL table I pushed the red emergency |
|
|
2050
|
Mon Oct 5 10:41:31 2009 |
Koji | Update | PSL | PSL laser accidentally turned off | The PSL output looks smaller than the incident.
Try to FSS Slow actuator adj of -5.6 (nominal),
instead of -3.5. |
|
|
2051
|
Mon Oct 5 13:43:37 2009 |
Zach | Update | PSL | PSL table photos | I have been commissioned to take pictures
of the PSL table so that it can be diagrammed.
I am starting now (1:42 pm, 10/5/09). |
|
|
2052
|
Mon Oct 5 14:18:41 2009 |
Zach | Update | PSL | PSL table photos |
|
|
|
2055
|
Mon Oct 5 19:39:26 2009 |
Koji | Update | PSL | PSL laser accidentally turned off | I set the FSS slow actuator adj to -5.6
at the lunch time. It gave a little help
at that time. Now max of the MC Trans is |
|
|
2057
|
Tue Oct 6 10:09:55 2009 |
Zach | Update | PSL | More pictures | I'm back to terrorize the PSL table again.
The pictures I took yesterday were rubbish--today
I'm using a clamp that Steve was nice enough |
|
|
2083
|
Mon Oct 12 18:37:55 2009 |
Zach | Update | PSL | Inventory | --Apologies for the late post--
I was at the PSL table taking an
inventory of the components for a while after |
|
|
2088
|
Mon Oct 12 22:15:15 2009 |
rana | Configuration | PSL | Stray beam blocking | You can remove the RFAM measuring setup.
Once we upgrade, we will no longer have a
MZ or the related problems. |
|
|
2089
|
Tue Oct 13 10:31:11 2009 |
Zach | Update | PSL | one more time | I am at the PSL table taking what is hopefully
the last set of pictures for the diagram.
Woohoo. |
|
|
2090
|
Tue Oct 13 10:50:58 2009 |
Zach | Update | PSL | one more time |
|
|
|
2098
|
Thu Oct 15 12:35:09 2009 |
Zach | Update | PSL | inventory | I'm at the PSL table taking inventory of
the elements I don't have down yet. |
|
|
2099
|
Thu Oct 15 12:57:23 2009 |
Zach | Update | PSL | inventory |
|
|
|
2142
|
Mon Oct 26 15:40:01 2009 |
steve | Update | PSL | laser power is down | The laser power is down 5-6% |
|
|
2147
|
Mon Oct 26 23:14:08 2009 |
Koji | Update | PSL | laser power is down | I adjusted the steerings to the PMC and
gained 7%. Now the MC_TRANS 7.0 has been
recovered. |
|
|
2151
|
Tue Oct 27 18:01:49 2009 |
rob | Update | PSL | hmmm | A 30-day trend of the PCDRIVE from the
FSS. |
|
|
2155
|
Wed Oct 28 09:12:18 2009 |
steve | Update | PSL | PMC power on the rise? | The PMC power is seems to be on the rise,
( MOPA_AMPMON is dropping ?) but I do not
think it is real. We have Santa Anna wind |
|
|
2158
|
Thu Oct 29 13:48:32 2009 |
Koji | Update | PSL | NPRO LTMP lowered 9.5deg | 13:00 Found MC TRANS less than 7.
13:50 Go into the PSL table.
14:20 Work done. Now I am running |
|
|
2161
|
Thu Oct 29 20:21:14 2009 |
Koji | Update | PSL | NPRO LTMP lowered 9.5deg | Here is the plots for the powers. MC TRANS
is still rising.
What I noticed was that C1:PSL-FSS_PCDRIVE |
|
|
2165
|
Fri Oct 30 10:52:56 2009 |
Jenne | Update | PSL | HEPAs | Zach found the HEPA switch on the PSL table
OFF. He turned them on. |
|
|
2169
|
Mon Nov 2 13:34:36 2009 |
kiwamu | Configuration | PSL | removed multiply resonant EOM | I removed the multiply resonant EOM that
has been set by a SURF student from PSL table.
I will use it for checking the resonant |
|
|
2236
|
Wed Nov 11 12:29:44 2009 |
Alberto | Frogs | PSL | MC Locked on the wrong mode? | This morning, after Steve pointed out that
the readout RFAMPD_DC was zero, I thought
of realigning the beam on the photodiode. |
|
|
2249
|
Thu Nov 12 10:45:02 2009 |
Alberto | Update | PSL | Abandoned Frequency Generator | This morning I found a frequency generator
connected to something on the PSL table sitting
on the blue step next to the sliding doors. |
|
|
2251
|
Thu Nov 12 11:19:10 2009 |
Koji | Update | PSL | Abandoned Frequency Generator | Last night there was an activity for a
calibratuon work, which I helped. I can take
care of the FG. |
|
|
2256
|
Thu Nov 12 16:13:05 2009 |
Alberto | Update | PSL | MC Trans Offset | On Rana's suggestion I checked the MC
transmission QPD (C1:IOO-MC_TRANS_SUM). I
found that the readout is almost zero when |
|
|
2258
|
Thu Nov 12 17:15:43 2009 |
Koji | Update | PSL | MC Trans Offset | OK. I have been keeping my eyes on the
MC transmission. In deed, the MC trans has
been well kept at around 7.7 since the last |
|
|
2260
|
Thu Nov 12 17:42:04 2009 |
Koji | Update | PSL | MC Trans Offset | PC_DRIVE is also improving after the last
PSL work!
|
|
|
2311
|
Mon Nov 23 00:46:09 2009 |
rana, rob | Update | PSL | ISS RIN: Its too high by 10x | This plot shows the RIN as measured
by the ISS. Its ~2 x 10^-7, whereas its supposed
to be more like 3 x 10^-8. |
|
|
2335
|
Wed Nov 25 16:13:27 2009 |
rana | Update | PSL | Measured MC length--FSS trend | but the increase in both the RCtrans and
the RCrefl is consistent with my theory that
the power going to the RC has increased ; |
|
|
2336
|
Wed Nov 25 16:44:52 2009 |
Koji | Update | PSL | Measured MC length--FSS trend | I checked C1:PSL-FSS_VCODETPWR. The attached
is the 4 months trend of the FSS RCTRANS
/ RFPDDC(=FSS REFL) / VCODETPWR / VCOMODLEVEL. |
|
|
2343
|
Sat Nov 28 20:27:12 2009 |
Koji | Update | PSL | FSS oscillation: Total gain reduced | I stopped by the 40m for some reason and
found that the MC trans was 7.5.
This was caused by an oscillation |
|
|
2379
|
Thu Dec 10 09:51:06 2009 |
rob | Update | PSL | RCPID settings not saved | Koji, Jenne, Rob
We found that the RCPID servo "setpoint" |
|
|
2381
|
Thu Dec 10 09:56:32 2009 |
Koji | Update | PSL | RCPID settings not saved | Note: The set point C1:PSL-FSS_RCPID_SETPOINT
is 37.0 on C1PSL_FSS_RCPID.adl.
Now the temp is recovering with its |
|
|
2466
|
Wed Dec 30 09:57:53 2009 |
steve | Update | PSL | thirsty water chiller | I added 600 cc of Arrowhead Distilled Water
to the chiller.
60 days plot shows that about every |
|
|
2563
|
Tue Feb 2 22:39:12 2010 |
Jenne | Update | PSL | IFO isn't playing nice tonight | [Jenne, Kiwamu]
It's been an iffy last few hours
here at the 40m. Kiwamu, Koji and I |
|
|
2564
|
Wed Feb 3 01:17:19 2010 |
Koji | Update | PSL | IFO isn't playing nice tonight | I checked the situation from my home
and the problem was solved. |
|
|
2565
|
Wed Feb 3 07:57:01 2010 |
steve | Update | PSL | PMC transmission is low | The low PMC transmission alarm was on this
morning. The PMC alignment needs a touch
up. |
|
|
2650
|
Tue Mar 2 12:20:54 2010 |
kiwamu | Update | PSL | stray beam | In order to block stray beams, I have
put some beam dumps and razor blades on the
PSL table. |
|
|
2690
|
Sun Mar 21 20:08:20 2010 |
kiwamu, rana | Update | PSL | EOM wasit size | We
are going to set the waist size to 0.1 mm for |
|
|
2691
|
Sun Mar 21 21:02:39 2010 |
Koji | Update | PSL | EOM waist size | You don't need a lengthy code for this. It
is obvious that the spot size at the distance
L is minimum when L =
|
|
|
2720
|
Sun Mar 28 20:05:33 2010 |
rana | Summary | PSL | FSS Work from Sunday: AOM/VCO level set wrong | Just before working on the FSS today, I
noticed that the VCO RF output level was
set incorrectly. |
|
|
2721
|
Sun Mar 28 20:51:31 2010 |
rana | Summary | PSL | FSS Work from Sunday: Cavity Suspension is Ridiculously Undamped! | What
is the Transfer Function of the suspension |
|
|
2722
|
Sun Mar 28 23:17:46 2010 |
rana | Summary | PSL | FSS Work from Sunday: noise spec | This is the error point spectrum - it is
filled with huge multiples of ~75 kHz as
Yoichi noticed a couple years ago. |
|
|
2723
|
Sun Mar 28 23:47:47 2010 |
rana | Summary | PSL | FSS Work from Sunday: Open Loop Gain | I measured the open loop gain of the FSS
(as usual, I have multiplied the whole OLG
by 10dB to account for the forward loop gain |
|
|
2724
|
Mon Mar 29 01:11:33 2010 |
rana | Summary | PSL | FSS Work from Sunday: RF Out Spectrum | I measured the RF spectrum coming out
the FSS RFPD to look for saturations - its
close to the hairy edge. This is with |
|
|
2726
|
Mon Mar 29 02:07:50 2010 |
Koji | Summary | PSL | FSS Work from Sunday: Open Loop Gain |
|
|
|
2732
|
Mon Mar 29 21:43:27 2010 |
Alberto | Configuration | PSL | Reference Cavity PD Noise Spectrum | [Rana, Alberto]
This evening we measured the noise
spectrum of the reference cavity PD used |
|