| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
12408
|
Mon Aug 15 12:23:56 2016 |
Praful | Update | PEM | Mic Self Noise | I didn't have a separate training set
and data set, so I think that's why the
graphs came out looking too good. The units |
9x |
|
12429
|
Mon Aug 22 16:33:32 2016 |
Steve | Update | PEM | the lab temp is up | The IFO room temp is up a bit and it is
coming down. The out side temp is not really
high. |
|
|
12431
|
Mon Aug 22 18:35:16 2016 |
Praful | Update | PEM | the lab temp is up | The temperature is decreasing slowly but
is still above 24 C.
|
|
|
12498
|
Fri Sep 16 14:15:28 2016 |
steve | Update | PEM | partical counts | South end flow bench and both clean room
assembly flow benches measured zero counts
for 0.3 and 0.5 micron size particales. |
|
|
12538
|
Fri Oct 7 15:36:03 2016 |
Steve | Update | PEM | the lab temp is up | The IFO room temp is up
|
|
|
12558
|
Thu Oct 13 14:49:57 2016 |
Koji | Configuration | PEM | XLR(F)-XLR(M) cable took from the fibox to the Blue microphone | [Gautam Koji]
XLR(F)-XLR(M) cable for the blue
microphone is missing. Steve ordered one. |
|
|
12582
|
Thu Oct 27 09:38:32 2016 |
Steve | Update | PEM | mouse | We may have a mouse in the lab.
Do not leave any food scrap in trash ! Traps will be set. |
|
|
12605
|
Tue Nov 8 08:51:59 2016 |
Steve | Update | PEM | mouse hole sealed | This is where the mammal came though. It
is reach able from room 108 CES
|
|
|
12629
|
Mon Nov 21 11:30:01 2016 |
Steve | Update | PEM | rat is cut and removed | Last jump at rack Y2. |
|
|
12656
|
Fri Dec 2 10:57:08 2016 |
steve | Update | PEM | door seal replaced | The south end door leaky weather seals
replaced.
The aim is here to get some overpressure |
|
|
12673
|
Thu Dec 8 07:56:05 2016 |
Steve | Update | PEM | EQ6.5m Northen CA | No damage. ITMY is glitching, so it has
not been damped.
|
|
|
12687
|
Thu Dec 29 10:24:56 2016 |
Steve | Update | PEM | EQ5.7mHawthorn NV | Sus damping restored.
|
|
|
12696
|
Mon Jan 9 09:18:47 2017 |
Steve | Update | PEM | power glitch | There was a power glitch last night around
1:15am
The vacuum was not effected. |
|
|
12711
|
Fri Jan 13 10:53:03 2017 |
Steve | Update | PEM | doors are fixed | Control room to outside door was
realigned.
|
|
|
12712
|
Fri Jan 13 14:18:28 2017 |
Steve | Update | PEM | air condition fixed | The old control room AC has been
stick in heating mode for
about 2 months. It's thermostate |
|
|
12743
|
Fri Jan 20 14:42:12 2017 |
Steve | Update | PEM | Caltech weather station | We should be able to connect to this station |
|
|
12744
|
Fri Jan 20 17:12:37 2017 |
Steve | Update | PEM | EM172 mic is hooked up in the PSL | Gautam and Steve,
It is hanging in the midle of the
PSL enclosure. Wired to 1X1 to get plus and |
|
|
12789
|
Thu Feb 2 17:34:25 2017 |
rana | Update | PEM | EM172 mic is hooked up in the PSL | I don't know if anyone looked at the
time series (not trend) or spectrum of the
Microphone after installation, but it looks |
|
|
12790
|
Thu Feb 2 17:43:20 2017 |
gautam | Update | PEM | EM172 mic is hooked up in the PSL | I had noticed something wonky with the
microphone, but neglected to elog it. I had
tested it after installation by playing a |
|
|
12836
|
Fri Feb 17 10:56:12 2017 |
steve | Update | PEM | particle counter moved into PSL enclousure | The MET#1 particle counter was moved from
CES wall at ITMX to PSL enclousure south
west corner at 11am. |
|
|
12841
|
Tue Feb 21 10:08:35 2017 |
steve | Update | PEM | noisy morning | Our new janitor Francisco is started working
in IFO room today.
|
|
|
12844
|
Wed Feb 22 08:54:17 2017 |
steve | Update | PEM | PSL enclousure particle count | ETMX sus damping recovered. PSL enclousure
is dusty at 20V rotation speed. Rainy days
as outside condition. |
|
|
12855
|
Tue Feb 28 08:04:48 2017 |
steve | Update | PEM | ETMX damping recovered | ETMX sus damping recovered.
Note: The giant metal garbage container
was moved from the south west corner of CES |
|
|
12856
|
Tue Feb 28 18:25:22 2017 |
rana | Update | PEM | ETMX damping recovered | Huh? So should we ask them to put the container
back? Or do you have some other theory about
ETMX tripping that is not garbage related? |
|
|
12884
|
Mon Mar 13 16:47:41 2017 |
Steve | Update | PEM | Y-arm air conditon belts replaced | The east end AC unit is arching over and
running rough at CES. Called for mechanic.......
Both belts were replaced and the |
|
|
12895
|
Mon Mar 20 17:12:08 2017 |
steve | Update | PEM | particle counter inside of PSL enclousure | The logging script is multiplying by 100
instead of 10 !
|
|
|
12908
|
Mon Mar 27 15:36:27 2017 |
Steve | Update | PEM | particle counter inside of PSL enclousure |
|
|
|
12909
|
Mon Mar 27 16:01:55 2017 |
Steve | Update | PEM | X arm AC set to 68F |
The X arm air conditioner was not
regulating properly. The arm temp was warmer |
|
|
12930
|
Thu Apr 6 15:35:44 2017 |
Steve | Update | PEM | envioirmental noise | Building:
Central Engineering Services
|
|
|
13046
|
Wed Jun 7 10:07:00 2017 |
Steve | Update | PEM | air condition thermostate | The Y arm ac thermostate was calibrated
after cooling water relay replacement by
Mike.... yesterday. The set temp is remaind |
|
|
13183
|
Thu Aug 10 14:13:23 2017 |
Kira | Summary | PEM | temperature sensor | Goal is to build a temperature sensor accurate
to 1 mK. Schematic is shown below. This does
not take into account the DC gain that occurs. |
|
|
13184
|
Thu Aug 10 14:14:17 2017 |
Kira | Update | PEM | previously built temp sensor | I decided to see what was inside the sensor
that had been previously made. According
to elog 1102, the temperature sensor is LM34, |
|
|
13188
|
Thu Aug 10 21:22:06 2017 |
rana | Summary | PEM | temperature sensor |
Should we use the AD590 or the
AD592? They're sort of the same, but
have slightly different packages and specs.
Given |
|
|
13190
|
Fri Aug 11 10:27:49 2017 |
Kira | Update | PEM | temperature sensor | Since there seems to be little difference
between AD590 and AD592, I guess we could
just go with the AD590. The temperature noise |
|
|
13191
|
Fri Aug 11 10:48:39 2017 |
Kira | Update | PEM | temperature sensor | Quick update: we actually have AD587KRZ
and AD592, so we could start by using that
and seeing how it works. |
|
|
13193
|
Fri Aug 11 11:56:02 2017 |
rana | Update | PEM | temperature sensor | Might as well order several of a few different
varieties today. Its good to have some extra
in stock; we don't always want to have |
|
|
13194
|
Fri Aug 11 12:27:25 2017 |
Kira | Update | PEM | temperature sensor | Used AD592CNZ and AD586 (5V output) to
create a circuit that works and is responsive
to temperature changes. At room temp, using |
|
|
13202
|
Mon Aug 14 09:49:18 2017 |
Kira | Update | PEM | temperature sensor | Decided to try adding in an OP amp just
to see if it would work. Added LT1012
and a 100k resistor to the circuit (I originally |
|
|
13203
|
Mon Aug 14 12:52:33 2017 |
Kira | Update | PEM | temperature sensor | I didn't realize that the LT1012 needed
an additional input to function. I added
in +15V and -15V to pins 7 and 4, respectively and |
|
|
13209
|
Tue Aug 15 11:50:21 2017 |
Kira | Summary | PEM | temp sensor packaging/mount | For the final packaging/mounting of the
sensor to the seismometer, I have thought
of two options. |
|
|
13210
|
Tue Aug 15 13:32:38 2017 |
Kira | Update | PEM | temperature sensor | Tested to make sure that even when only
the AD586 was heated that there was no change
in the reading. I did so by placing the AD586 |
|
|
13214
|
Wed Aug 16 16:05:53 2017 |
Kira | Update | PEM | temp sensor PCB | Tried taking the circuit from the breadboard
to the PCB. I attached all the components
to adapters that would allow them to be connected |
|
|
13224
|
Thu Aug 17 10:41:58 2017 |
Kira | Update | PEM | temp sensor PCB | Got it to work. One of the connections
was faulty. I decided to check the temperature
measured against a thermometer. The sensor |
|
|
13232
|
Mon Aug 21 13:07:08 2017 |
Kira | Update | PEM | temp sensor PCB | On Friday, I cleaned up the circuit so
that there are only three connections needed
(+15V, -15V, GND) and a BNC connector for |
|
|
13269
|
Tue Aug 29 15:41:17 2017 |
Kira | Summary | PEM | heater circuit | I worked with Kevin and Gautam to create
a heater circuit. The first attachment is
Kevin's schematic of the circuit. The |
|
|
13272
|
Wed Aug 30 06:45:32 2017 |
Kevin | Summary | PEM | New Heater Circuit | I changed the heater circuit described
in this
elog to a current sink. The new and old |
|
|
13285
|
Fri Sep 1 15:46:12 2017 |
Kira | Update | PEM | temp sensor update | I took off the AD590 and attached it to
two long wires leading out from the board.
This will allow us to attach the sensor to |
|
|
13292
|
Tue Sep 5 09:47:34 2017 |
Kira | Summary | PEM | heater circuit calculations | I decided to calculate the fluctuation
in power that we will have in the heater
circuit. The resistors we ordered have 50 |
|
|
13295
|
Tue Sep 5 17:18:17 2017 |
Kira | Update | PEM | temp sensor update | Today, I stuck on the sensors to a metal
block using a flag, rubber bands, and some
thermal paste (1st attachment). I then wrapped |
|
|
13296
|
Tue Sep 5 17:52:06 2017 |
Kira | Update | PEM | temp sensor update | to get the sensors to read the same values
they have to be in direct thermal contact
with the metal block - there can't be |
|