ETMY sus damping was disabled. Green locking laser and associated electronics turned off. Computers and power supplies turned off at rack 1Y4

The electricians picking up ac power from 1Y4 manual disconnect box and installing conduit line to ISCT-ETMY east end optical table.

There will be no more daisy chaining this way. 

 The power is back on at ETMY . c1iscey has not been restarted.

Now I'm turning ac power off at ETMX for the same job to be done.

 The power was turned back on at 4pm It took some time for Suresh to restart the computers. We have damping but things are not perfect yet. Auto BURTH did not work well.

 The Laseroptik quote is here.The 2 degrees wedge cost is $40 on each optics!  See wiki

Bob cleaned all safety glasses in 10 % Liquinox soap in water solution first.  The  transmittance of glasses were checked at 100 mW 1064 nm S polarization, beam diameter  0.5 mm at 0-20 deg incident.

Coherent FieldMate power meter measured T= < 1 mW of all glasses.

 Completed with the exception of d and g

 Conclusion: There is no need to silver plate the SS plunger at the torque level we hold the OSEMs

Mike Gerfen will be done with 50 pieces by April 4 and he will give them to Bob for cleaning. They should be cleaned and baked in a jig so the springs would be compressed for better venting.

 The CIT Chemistry Glass Shop cuts turned out to be sloppy using diamond disc blade  cutter.

East coast Precision Glass & Optics  offered scribed cut and polished side. Their quote price was high and time consuming.

The GLASS HOUSE  shop in Pasadena 626 / 796-9151 on Walnut did a good and cheap job. Oscar the cutter will finish the rest of the cutting by next Friday, April 6

He used scribed cutting technic and his 1" x  0.5"  pieces are good. Bob will pick up them up.

Local eq shakes the lab

We received 6 new  chairs stools for the work benches that have 36" heights.

The control room east side and general office desks require 18" seat height. The new chairs stools have  minimum seat heights  26"

Please label chairs that we are getting rid of.

 I'm working on similar shelf at ETMY.  Precondition: NPRO in bypass mode, heater for doubling in bypass........since power outage?  Optical level servo turned off.......

U-channel based shelf in place.  Oplev servo is back on at 11:15am    The table may moved.  The oplev return is missing the quad by a few milimeter.

ETMY sus damping restored.

ETMX sus damping restored

Guralp 1  is on the south side of IOO chamber

 Aluminum posts and SS clamps for green glass traps in vacuum will be out of the shops by June 6, 2012 the latest

 The typical sign of a dying gas laser is that it glows for a few minutes only. The power supplies are fine.

Two new  JDS - Uniphase 1103P lasers ( NT64-104 )  arriving on Monday, May 21

 The uncoated bi-concave lens was replaced by AR coated one: KBC 037 -100 AR.14 resulting 35% count increase on qpd

I locked the PMC and the MC followed instantly.

 Yesterday I swapped in new He/Ne laser with output power 3.5 mW  The return spot on qpd is large ~6mm in diameter and 20,500 counts

The spot size reduction require similar layout as ETMX oplev.

New self checking emergency back up lights were installed at 13 locations in the 40m lab.

 The PMC  behavior is not changed.

3 strip charts monitoring on 24 hours time scale: Vac,  PSL-IFO,  SUS and 10 channel video monitoring inside - outside  of 40m lab

IOO Angle & IOO Position QPDs centered.

 The oplev path is relayed and the spot size on the qpd is reduced. I still have to clean up and replace "Miki Mouse" lens holder.

There was no IP-ANG coming out of the chamber at this time!

 Jenne and Steve

Sony CCD in place needs alignment and ND filter

 PMC trend of 400 and 1200 days

The Innolight 2W based PSL- IOO was implemented in the ~ summer of 2010

 Mike P swapped in a new network router Linksys E1000

 As of February 23, 2012 when oplev PIT and YAW transfer functions were taken

What not to do:

The PRM oplev servo was left on and it was driving this oscillation overnight.

 I noticed that the ion pump was turned off.

It was turned ON. It showed 0.00 microA at 5kV  The current display is not sensitive enough. There must be some small outgassing or leak. It adds up if we stop pumping.

We want to keep the reference cavity in pristine condition. It required the ion pump running all times.

 Air conditioning maintenance is scheduled for tomorrow from 8 to 11am

 Oplev servo turned off and sus damping restored. What is kicking up the PRM?

Rana, Steve,

 Late entry for Monday morning June 4, 2012

Cables were stress relieved. Cable entry - exit ports enlarged. Air gaps were minimized.

 The PRM oscillation stopped by turnig off oplev servo.

Do not turn Oplev Servo on when PRM is missaligned !

 Jeff checked and  replaced filters  as needed. Job completed this morning.

 40m - pumpdown 71- maglev pumping speed - at day 276........all normal

 The PMC was locked and the MC followed intantly

 PRM oplev servo was turned on with PITgain 0.5  and YAWgain  -0.7

Note: gain settings were PIT  1.0  and  YAW --0.5   on Jun 1, 2012 that I measured Feb 23, 2012

 It is still oscillating. Gains turned down to zero.

The MC_ IDC 64 pin cables from sat. amplifiers to junction-interface-board towards  whitening - dewhitening at the back of rack 1 X 5 are finally  clamped with

All other sus cables of the same kind have the correct short latch arm to lock them in for reliable contact.

There is a small wood cabinet under the south end flow bench, labeled STACIS.

Unit is complete with extension cards and cables.

The south end flow bench HEPA filter should be run all times. You can turn it off for a measurement or two but remember we are storing clean optics there.

The zero count bench will reach  room particle count  ~ 10,000 in one minute.

Masha, Eric, Yaakov, Liz and Sasha received 40m specific basic safety training.

I was notified by CIT Utilities that there was a power surge or short power outage this after noon.

Lab conditions are normal:  c1ioo is down.  The south arm AC was off......I turned it back on.

             CALIFORNIA INSTITUTE OF TECHNOLOGY

                 FACILITIES MANAGEMENT

                 UTILITY & SERVICE INTERRUPTION

**PLEASE POST**

Building:         CAMPUS

Date:             Saturday, June 23, 2012

Time:             3:46 P.M.

Interruption:     Electrical Power Disturbance

Contact:          Tom Brennan, x-625-395-4984    

*The City of Pasadena Water & Power Department had a 34,000-volt line event on Saturday June 23 at 3:46 p.m.  This caused a city wide disturbance on the power grid.  The Campus did not lose electrical power.  However, the disturbance may have affected sensitive electronic equipment.

(If there is a problem with this Interruption, please notify the Service Center X-4717 or the above Contact as soon as possible.

If no response is received we will proceed with the interruption.)

                        Jerry Thompson,

                        Interim Director of Campus Operations & Maintenance

 Steve, Yuta and Jamie

Jam nuts were checked and oplev servos were turned off. Sus summery is below with strain gauge values. Are the strain gauge values have any meaning when the PZT contorrels are off??????????????????