Beam trap for Pd refl is in place. Cabeling is ti·died up.

 Laseroptic 1" mirror is replaced by Al 1" mirror. Problem remains the same. This diffraction patter has to be coming from the Faraday.

  Atm1, good separation when Pd is far 

  Atm2, bad separation when Pd is close 

 The extra high post 3.375"  for PZT is ready. We also have 2 more 2" green Laseroptik mirrors. I'm ready to swap them in.

The  75 mm  focal length  lens  was placed in front of the green REFL PD yesterday.

 Fred Goldbar of KoneCranes will come 7:30am Wednesday, September 4 to look at this issue.

It is changed to Thursday morning.

 Valve configuration: Vacuum Normal

pd76-m-d23

I cleaned up around MC2 and 1Y1 area this morning.

ETMY NPRO moved from the side to the center of the low shelf. Thorlab catalog " as spacer " removed after lunch.

The Lightwave Controller values: LT 40.4C,  LTEC +0.1V,  T 41.041C,  Pwr 239 mW,  Adj 0,  DC 1.82A,  DPM  0.0V,  Neon OFF,  Ldon OFF,  Display 5,  DT 21.0C,  Dtec +1.0V

 B grade Nobel is awarded.

                                  If cables could dream?

This skill should be  mandatory for LIGOX graduates.

 ~Vancuver, Canada earthquakes: magnitude 6,  5  and more shaking

I think the crane repair guy accidentally  stepped on the  BSC support beam.

PRM side is not coming down.

 [Fred Goldbar, Mike Gerfen, Dennis Coyne and Steve]

We inspected the hinge, 1.25" cross pin and I-beams. It is hard to explain what is  causing the folding I-beam corner to jam against the main I-beam.

To limit the motion of the folding I-beam  cross pin bushing will be added. This will take a week to complete.

 KoneCrane contact John McDaniel (562) 903 - 1371,

Wednesday, September 18,  folding I-beam will be removed.  KoneCrane will start working at 7:30am and they should be out by 12:30pm

 Friday,  September 20, reinstalling machined hinge on the I-beam. Same timing schedule as Wednesday.

 TP3 foreline's dry pump is getting noisier and noisier.  Turbo TP3 is pumping on the annulos. The foreline pressure is 7.2 mTorr and it is not degrading. It was swapped in March 5, 2013

The seal is very good, but the bearing is dying.

 The drypump is replaced at 95,781 hrs on TP3 controller time. The foreline pressure is 30 mTorr and dropping.

 It is 13 mTorr after 17 hours of pumping.

 Finally we reached 1.0e-5 Torr, cc1 (h) at day 41. There must be a leak or cold cathode gauge is not reading correctly. The gauge is new. It should not take this long.

All chamber annulos pressures are normal.

 The folding beam removed as shown. Two man supporting it while I hammering it out. Pin was dry and it gulled into supporting hinges.

The rotating hinge will be machined and bushing will be added with Zerk fitting or similar. This will allow lubrication in the future.

 see elog #9111

Local m3.8 eq shakes PRM lose.

Ottavia, Rossa  and Pianosa are running out of storage  space.

I'm working on it.

Atm1,  The folding arm is back on with 0.1" misalignment at no load in the trolly's way. The other side of the I beam is 0.02" higher than the main beam.. New bushing and pin were greased up  with Krytox before installation.

The axial Zerk 1/8" pipe in the pin upper end can not take any fitting. There is no room. It is taped off.

This gap comes down to ~ 1/16" at fully extended arm with 225 lbs load at the end of it.

The present plan is to grind down the  the misalignment of 0.1"  for a slow-loaded trolly.

Steve Baker of Konacranes will be back to grind down this ridge and load test at 500 lbs on Tuesday,  OCT  1, 2013

Liyuon will set up a  ~5 mW He/Ne laser for  waist measurement for LIGO oplev telescope.

This  will be between the beam tube and the CES wall. He will do his tests in the morning.

We are out of JDSU-Uniphase 1103P heads. I'm ordering some right now. I'm planning to make some corrections on Rana's list tomorrow morning at ETMY.

 Konecranes rescheduled the completion of the Vertex crane to Wednesday, Oct. 2

How can we improve the cleanliness of the 40m IFO room 104 ? May be Mario Batali crocs if you chief chef of the lab likes it. We can do more effective things.

Atm 1 is showing the lab air quality dependence on outside air  measured at the top of the IOO chamber. This made me to measure the   differential  pressure between lab and out side.

Properly sized air conditioner is over pressurizing it's room by 0.05 [" Water] like clean assembly room.

The 40m at Vertex location is barely getting pressurized to 0.01 " W

The control room is OK with 0.04 " W but it's air quality is very bad! It is 10x worse at 0.5 micron than IFO room.

Every entry from well pressurized control room into barely pressurized  IFO  pumps dirty air to our "clean room."

This door should be closed.

The drill- room entry is ideal because it is using the same air conditioner as the  main lab, therefore it has cleaner air.

Things to do: seal holes of CES walls, seal paint wall at south end so it will shed less, replace gas kits on doors.

I have plugged the cable tray space entering the control room above Rosalba.

The smoke alarms were turned off and surrounding areas were covered with plastic.

The folding I-beam was ground down to be in level with the main beam.

Load bearing cable moved into correct position. New folding spring installed.

Crane calibration was done at 500 lbs at the end of the fully extended jib.

Than we realized that the rotating wheel limit switch stopped working.

This means that the crane is still out of order.

 ETMY oplev laser clearly showing a tail when it was projected up the sealing.

PS (10-4-2013): I checked the beam quality again as it was removed from the table: it had a good image at 3 meters

 Just plot.

RA: I'm not sure how to interperet this; I think that the SUM channel is divided by the SUM so that this is supposed to be RIN, but not sure. Can someone please take a look into the SUS model and then explain in the elog what the SUM normalization algorithm is?

PRM is dark. PRM and SRM oplev servos are off. ETMY is not centered.

This was the second week without wet mopping the floor and wet wipe down of the vacuum envelope.

We changed filters on the 40m "HEPA" vacuum pump. It still has very dirty exhaust. Do not use it in clean room!

 Valve configuration: Vacuum Normal

 [Alan, Koji, Manasa]

Record number of 50 freshmen were given tour of the 40m this afternoon.

Chris Couste, our new undergrad help received 40m specific, basic safety training yesterday.

Power spetrum of ETMX and ETMY in the view of oplev  pitch and yaw.

  Atm1 bandwidth 0.01 Hz ETMY plot is different from

Atm2 bandwidth 0.1 Hz  normal ???????    They should be the same !!!!

 ETMX _OPLEV_...ERROR signals are effected by turning ON the  flow bench motor  at the south end 

 The broadband noise [~ 5-60 Hz] is much higher when the motor is running.

The flow bench was turned off.

Sunday evening fireworks. Manasa heard it.

I have just turned on the PSL Innolight laser. The laser shut down  with unknown reason a day ago.

  The 4th week of no wet mopping of the floor  and no wet wiping  the vacuum envelope.

We cleaned the intakes of the south arm IFO air condition. The bottom duct have quite a bit accumulation Atm1

See wet wiped contrast on Atm2

We found 3 holes around pipes ( coming from CES ) on the east wall that has to be sealed.

After closer examination of these holes, they are sealed off well.

 ETMY sensors are glitching or getting kicked up.

Atm3, There is no seismic activity here.

 Nice work. Congratulation

Atm1,  The strong glitches are back.

Atm2,  SUS-ETMX & Y_SENSOR_LL Damping OFF at (ref0 & ref1). damping ON (red & blue)

ETMY sus looks OK

 The PMC transmission continuously degrades. In order to see what is really drifting the laser output after PBS was sampled as shown.

 We have tried to ssh into c1iscey yesterday morning. It just did not work. We have just tried it again (now) and it did work.

Lesson learned: always shut down the computer from a TERMINAL Do not turn it off by the manual power switch.

No wonder they could not find the beam dumps. Last night was Haloween. They should of just said: Trick or treat! where are the beam dumps?

 The PMC auto locker is not set to acquire error message made me lock PMC manually.  Arms  locked instantly: TRY 0.9 V and TRX 0.65 V

 The PSL shutter is reinstalled.The base plate is delrin for isolation and the mount height is adjustable. The last steering mirror mount to be swapped in is ready. It is sitting on the top of the ITMX optical table cover with SS dogs.

There are two reflected spots on the north side of the Uniblitz shutter. They are coming from the vacuum window. They should be trapped also.

 The IOO Angle and IOO Position qpds  were recentered after this entry.

 Suggested corrections in elog entry #9323 are completed:

 1,  last steering mirror mount replaced by Polanski mount

 2,  PSL output shutter mount reconfigured

 IOO qpds are not centered. I failed to connect laptops to 40MARSian network.

 Full list tomorrow: IP-Ang & Pos, ETMY-T, ETMY-Oplev, ETMX-T, IOO-Ang & Pos

 RA: No one in the control room this evening can understand what this ELOG means. Please use more words.

 Yesterday the last steering mirror mount on the PSL was changed, Manasa recovered the MC alignment and Jenne locked the arms.

 I centered the following qpds:  ASC-IBQPD, LSC-TRY, SUS-ETMY_OPLEV, LSC-TRX, SUS_ETMX_OPLEV

 Touching the PSL pointing IOO-QPD_ANG & POS was a mistake. We lost the reference of the well refined MC input.

One and 20 days TRENDS  plot showing the PSL output drift in pitch can be power drop

However initial pointing is amazingly good. ( I wonder about the lens in front of the qpd ?)