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  40m Log, Page 159 of 344  Not logged in ELOG logo
ID Date Authorup Type Category Subject
  11728   Wed Nov 4 08:04:53 2015 SteveUpdatesafetysafety training

Yutaro Enamoto, visiting graduate student of Seiji received 40m specific basic safety training.

 

  11730   Wed Nov 4 15:48:58 2015 SteveUpdatePEMETMX wirestadoff vs EQ

ETMX was not much effected by this 8.3 M Chilian earthquake. It was kicked up and it was kicking for hours after it. This is a sign of instability but it maintaind it's position.

The 24 hours plot follows the tempeerature.

 

  11739   Mon Nov 9 09:27:44 2015 SteveUpdatePSLMC is not happy

I just turned off the PSL enclousure lights.
 

  11755   Thu Nov 12 09:15:56 2015 SteveUpdateSUSITMX osems

The ITMX OSEMS are oscillating.

  11756   Thu Nov 12 09:41:02 2015 SteveUpdatePSLPMC

The PMC is not happy and the ITMX UL OSEM is moving too much

 

  11757   Thu Nov 12 10:22:33 2015 SteveUpdatePEMpossible vibration for 4days

Building:         San Pasqual walkway East to West

                  (Between Holliston & Wilson)         

 

Date:             Thursday 11-12-15 to Wednesday 11-18-15

 

Time:             Between 6:00 a.m. and 4:00 p.m. each day        

 

Notification:     Possible Noise Vibration

 

Contact:          Ken Lewis (626) 298-2037       

 

* Plumbing contractor will be inspecting and water jetting Storm drains

Type of interruption: (Some vehicle noise and small vibrations limited to close surrounding area)

Areas effected: San Pasqual walkway from Holliston Street to Wilson)

Potential effects: storm drain loss of use

Reason for interruption: Storm drain cleaning in preparation for rainy season

 

  11760   Fri Nov 13 15:20:24 2015 SteveUpdateSUSOSEMs

Are they oscillating or not ?

Quote:

The ITMX OSEMS are oscillating.

ETMX, ETMY and MC2 POS _biases are off. Why ?

The Epics MEDMs screens are going blank in  ~3-5 minutes reluctantly.

  11771   Tue Nov 17 10:06:53 2015 SteveUpdateGeneralwater leak in east arm
Quote:

A Caltech maintenance staff dropped by at around noon today, and told me that he had seen a small puddle of water on the other side of the door along the Y-arm that is kept locked (about 10m from the end-table, on the south side of the arm). He suspected a leak in the lab. Koji and I went down to the said door and observed that there was indeed a small puddle of water accumulated there. There isn't any obvious source of a leak on our side of the door, although the walls tiles in the area suggest that there could be a leak in one of the pipes running through the wall/under the floor. In any case, the leak doesn't seem too dramatic, and we have decided to consult Steve as to what is to be done about this once he is back on Wednesday.

The leak was found inside the wall. Fortunately the plumbers were able to access it from CES room 108

This has been leaking for sometimes. The damaged wall area is about 18 ft long and 1 ft high.

  11830   Tue Dec 1 10:52:52 2015 SteveUpdateGeneralDataviewer

Dataviewer x axis end is not there.

On ( 2600 days) longer plots it is missing 8 moths and on (100 days) shorther plot it is missing 1 month.

  11832   Tue Dec 1 16:55:04 2015 SteveUpdateVACDataviewer fixed

Q adjusted the Dataviewer so it is not chopping of data any more. Thanks.

 

Cold cathode gauge reading of 10 years.

 

  11858   Mon Dec 7 11:17:51 2015 SteveUpdateVACnoisy RGA scan at day 433

 

Quote:

CC1 and CC2 are working again. Why did they start working  again ?

 

 

  11863   Tue Dec 8 15:40:48 2015 SteveUpdateVACglitchy RGA scan at day 434

The noise floor of the Rga scan is glitching less today

 

  11866   Wed Dec 9 11:25:55 2015 SteveUpdateVACnormal RGA scan at day 435-436

Glitches are gone. Rga scan is good

 

  11878   Mon Dec 14 14:08:49 2015 SteveUpdateSUSRuby wire standoffs update

Two companies are willing to  make the ruby grooves and the third one is still working on their quote.

The price is ~$100 each. The cost goes down 10% if we  order 50 instead of 30 pieces.

How many should we get ?

  11885   Wed Dec 16 10:22:14 2015 SteveUpdateIOOthis morning

c1sus and c1ioo were restarted. PMC locked.
 

  11895   Mon Dec 21 14:31:41 2015 SteveUpdatePEMRat traps set

Two mechanical and two sticdky traps were set to catch univited visitor.

Absolutely no food or food remains into inside garbage cans!!!!!!!!!!!!!!!!!!!!!!!!!

Quote:

A small rat / large mouse just ran through the control room. Ugh.

 

  11897   Tue Dec 22 16:39:42 2015 SteveUpdateendtable upgradeETMY optical table enclosure

I think there should be a scientifically based aveluation of the ETMY enclosure so we can make the ETMX better.

Meanwhile I'm counting pieces to move on with the south end table cover.

 

  11902   Sat Dec 26 10:34:43 2015 SteveUpdateGeneraltoday

PMC locked manually and PRM sus damping restored.

  11903   Mon Dec 28 14:12:23 2015 SteveUpdateSUS4.2M EQ

Suspensions are recovered after 4.2 Mag earth quake. No obvoius sign of damage.

 

  11904   Wed Dec 30 11:09:52 2015 SteveUpdateSUS4.4M EQ

Suspensions recovered after 4.4 Mag EQ

 

  11909   Tue Jan 5 09:48:52 2016 SteveUpdatePEMRat trap moved

Our janitor confirmed that Q was not hallucinating about this animal. The dropping size indicating a good size one in the IFO room.

One of the mechanical traps moved from the control room to the east arm, close to the " machine shop " door.

I'm going to get more traps.

Quote:

Two mechanical and two sticdky traps were set to catch univited visitor.

Absolutely no food or food remains into inside garbage cans!!!!!!!!!!!!!!!!!!!!!!!!!

Quote:

A small rat / large mouse just ran through the control room. Ugh.

 

 

  11911   Tue Jan 5 15:48:16 2016 SteveUpdatesafetyRat trap locations

Please look around when working close to these five locations. Use flashlights or leave lights on.

These mechanial traps are HAZARDOUS !

No visitors or tours till Monday, Jan 11  2016

  11914   Wed Jan 6 08:09:04 2016 SteveUpdatePEM4.5 Mag Banning EQ

IFO restored after 4.5 Mag Banning, Ca earthquake.

  11915   Wed Jan 6 10:58:03 2016 SteveUpdateGeneral projector light bulb is out

Projector light bulb ordered

Quote:

 

[ Manasa, Ericq and Steve ]

 Vivitek D952HD with 186 hours installed.

 

  11927   Tue Jan 12 07:54:23 2016 SteveUpdateSUSETMX damping restored

PMC locked and ETMX suspension damping restored.

  11928   Tue Jan 12 08:40:06 2016 SteveUpdatePEMAir cond maintenance

Air condition maintenance is happening. It should be done by 10am

  11932   Thu Jan 14 13:44:05 2016 SteveUpdateSUS earthquake 3.6M

No obvious sign of damage.

 

  11935   Tue Jan 19 10:25:53 2016 SteveUpdateSUSEQ 3.6M Ludlow

Just an other local earthquake 3.6 Mag Ludlow, Ca

No obvious sign of damage

 

  11939   Wed Jan 20 09:36:11 2016 SteveUpdateSUSETMX damping restored

ETMX suspension damping restored.

 

  11948   Mon Jan 25 08:36:46 2016 SteveUpdateSUSPRM damping restored

PRM suspension damping restored after 4.1 Mag Ludlow earthquake.

 

  11949   Mon Jan 25 11:06:08 2016 SteveUpdatePEMnoisy fan belt replaced

The noisy fan belt on the roof of the control room was finally replaced on Friday, Jan 22 2016

Quote:

Air condition maintenance is happening. It should be done by 10am

 

  11950   Tue Jan 26 15:07:47 2016 SteveUpdatePEMaccelerometers moved to ETMX

Objective:  measure the noise floor on the optical table and the floor so we can decide if the table needs better anchoring before swapping in

                   the larger optical table

The accelerometrs labeled as MC1 ( just north east  of IOO chamber floor ) and MC2 ( north east leg of MC2 table floor ) were moved:

MC1 to the floor at the north west leg of optical table.

MC2 is in the north east corner of the optical table

Atm2 was taken after table leg bolts were tighed at 40 ft/lb

The spectrum looks similar to ETMY     (Guralp for below 3 Hz )  except  the Z direction 

ETMY  .

  11952   Wed Jan 27 08:17:38 2016 SteveUpdatePEMETMX floor vs table noise

 

Quote:

Objective:  measure the noise floor on the optical table and the floor so we can decide if the table needs better anchoring before swapping in

                   the larger optical table

The accelerometrs labeled as MC1 ( just north east  of IOO chamber floor ) and MC2 ( north east leg of MC2 table floor ) were moved:

MC1 to the floor at the north west leg of optical table.

MC2 is in the north east corner of the optical table

Atm2 was taken after table leg bolts were tighed at 40 ft/lb

The spectrum looks similar to ETMY       except  the Z direction 

ETMY .

Conclusion: up to 20 Hz this set up is good.

  11959   Fri Jan 29 08:18:13 2016 SteveUpdatePEMPEM

 

Quote:

Air condition maintenance is happening. It should be done by 10am

 

  11960   Fri Jan 29 09:59:23 2016 SteveUpdateVACvacuum control upgrade

Rana stated yesterday that there will be a vacuum control update in the close future. Witnesses : Rich, Chris and Dave

Can you give me this in writing?

 

  11961   Fri Jan 29 14:43:47 2016 SteveUpdateGreen LockingInnolight laser is 10 years old
Quote:

After adjusting the alignment of the two beams onto the PD, I managed to recover a stronger beatnote of ~ -10dBm. I managed to take some measurements with the PLL locked, and will put up a more detailed post later in the evening. I turned the IMC autolocker off, turned the 11MHz Marconi output off, and closed the PSL shutter for the duration of my work, but have reverted these to their nominal state now. The are a few extra cables running from the PSL table to the area near the IOO rack where I was doing the measurements from, I've left these as is for now in case I need to take some more data later in the evening...I

Innolight 1W 1064nm, sn 1634 was purchased in 9-18-2006 at CIT. It came to the 40m around 2010

It's diodes should be replaced, based on it's age and performance.

RIN and noise eater bad. I will get a quote on this job.

The Innolight Manual frequency noise plot is the same as Lightwave' elog 11956

  11965   Mon Feb 1 09:16:32 2016 SteveUpdatePEMRat got cut

We got it! Traps are removed.

 

  11966   Mon Feb 1 14:08:06 2016 SteveUpdatePEMroof condtion is good

It rained hard yesterday. We have not had this strong downpoor for years. We got 0.7" and the roof did not leak.

  11972   Wed Feb 3 08:39:17 2016 SteveUpdateCDSblank daily summary pages

Daily summary pages are blank today. Yesterday is ok

  11975   Thu Feb 4 10:14:52 2016 SteveUpdateSUS earthquake 3.5M

 

 

  11976   Thu Feb 4 10:19:05 2016 SteveUpdatesafetyfire marshal inspection

Pasadena fire marshal inspected the lab today. No violation was found.

  11980   Mon Feb 8 09:37:07 2016 SteveUpdateSUS EQ 3.9m

No sign of damage

 

  11986   Thu Feb 11 14:28:50 2016 SteveUpdateTreasure091415 declared

   Beautifully Done

   Chirp

  what is next?

Atm 3, Ron Drever could not celebrate with us because of health issues.

 

  11987   Fri Feb 12 11:10:49 2016 SteveUpdateGreen LockingInnolight laser is 10 years old

It shipped out for repair evaluation.

Arrived to Hayward,CA   2016Feb16

 

  11992   Tue Feb 16 09:13:39 2016 SteveUpdateGeneralthere was a power outage & EQ

Pasadena reported the Sunday night event as a power transient caused by the trip of a power transmission line. This affected the entire city. Once the loss was detected, the system automatically switches to an alternate source. It was about one second for the system to recover.

 

2W Innolight, both Lightwaves at the ends, PSL HEPA, Ref Cavity and 3 AC units  turned on.

The 40m vacuum did not trip. It is vacuum normal.

The Jetstore computer is indicating power failer.

 

EQ  3.9 4.9 km (3.1 mi) NNW of Big Bear City, CA34.3027, -116.863, 3km Feb 16 2016 09:24:21 UTC 37524376

 

  11996   Wed Feb 17 09:05:07 2016 SteveUpdateVACforepump replaced

TP3 drypump replaced after 10,344 hrs at 750 mTorr foreline pressure.

The foreline pressure is 13 mTorr after 8 hrs of running, TP3: 50K rpm, 0.14 Amp with all annuloses pumped.

The annulos pressures are 0.3 - 5 mtorr

************************

Frame builder just crashed again

  12001   Mon Feb 22 08:45:46 2016 SteveUpdateSUSEQ 4.3 grabs ITMX-UL magnet

Local EQ4.3

kicks ITMX-UL magnet into stuck position.

Hopefully it is only sticking.

  12004   Tue Feb 23 09:51:34 2016 SteveUpdateSUSITMX free

Good job Q! Give us more details please or  play Rachmaninoff Piano Concernto #2

Atm2,  EQ 3.5 and 4.1 

          confirming ITMX is really free

Quote:

Taking inspiration from J. Lewis et. al, ITMX has been freed. 

Even better, I'm now seeing Green flashes in the X arm.  cool

 

  12007   Wed Feb 24 09:06:25 2016 SteveUpdateTreasurethe way it happened

 Celebration

Quote:

   Beautifully Done

   Chirp

  what is next?

Atm 3, Ron Drever could not celebrate with us because of health issues.

 

 

  12008   Wed Feb 24 10:27:23 2016 SteveUpdatesafetysafety audit 2016

Safety audit went smothly.

Crane inspection is scheduled for March 4

Safety glasses will be measured before April 1

 

ELOG V3.1.3-