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Reports until 14:57, Monday 12 September 2011
H2 SUS
jeffrey.garcia@LIGO.ORG - posted 14:57, Monday 12 September 2011 (1382)
H2 SUS BSFM medm screens edited
Two medm .adl files were edited to correct a naming discrepancy in the "SUS_CUST_BSFM_M1_DRIVEALIGN.adl" and "SUS_CUST_BSFM_M2_DRIVEALIGN.adl" medm files that incorrectly labeled the channel names of the first column in each as:
"H2:SUS-FMY_M*_DRIVEALIGN_M3L*" instead of "H2:SUS-FMY_M*_DRIVEALIGN_L2L*"

These custom medm files are located in the directory '/opt/rtcds/lho/h2/userapps/trunk/sus/common/medm/bsfm/'.

LHO FMCS
kyle.ryan@LIGO.ORG - posted 13:16, Monday 12 September 2011 (1381)
Spun down Y-end, YBM and XBM MTPs and QDP80s also valved-out temp. 75 L/s ion pump at CP2 vent connection


			
			
Logbook Admin General
jonathan.hanks@LIGO.ORG - posted 11:22, Monday 12 September 2011 - last comment - 10:24, Tuesday 13 September 2011(1380)
aLOG outage at LHO 13 Sept 2011 at 10am Pacific
The aLOG will be undergoing a minor update 10am pacific time tomorrow (13 Sept 2011).  The update is expected to be done in a matter of minutes.

If you are working on an entry please either post it or save it to a draft before 10am tomorrow.  Users will be required to authenticate again after the outage to post entries.

Summary of updates:
* Bug fixes on the administrative screens
* Some changes to how comments are displayed
* Update to the paging display to make it easier to spot the current page
* Some changes to attachment names
* Initial support for CDS robo-posting scripts
* Initial support for passing in search filters in the url.  This will allow bookmarked filters (ie show only SUS ...)
Comments related to this report
jonathan.hanks@LIGO.ORG - 10:24, Tuesday 13 September 2011 (1387)
The update is completed.

One change worth noting, it is possible to bookmark a search by section/task.  Go to the 'Help' task and view the entry 'Filter Shortcuts' to find current bookmarks.

Please note, the structure of the tasks and sections will change, so these bookmarks are temporary (for now).
LHO FMCS
jodi.fauver@LIGO.ORG - posted 16:05, Saturday 10 September 2011 (1378)
BSC-6 ICC
Report for 08-09 Sep 2011

The crew worked on the staggered lunch schedule on Thursday and Friday. They made such good progress both days that the brushing of the chamber was completed on Friday afternoon. That means vacuum-wipe down-vacuum can start Monday. Air drills continue to be problematic, with the success rate (running for 1/2 hour without issues)dropping below 50% on Friday. We made garb kits for the crew to use next week so that work can continue unimpeded.

Planning and staging for the return to the LVEA has begun. Christina will assess cleaning needs around HAM 7-8-9 on Monday and report back. Apollo will move a cleanroom over HAM 7-8 ASAP. The crew will start bring the compressor trailer, etc. back from Y-end on Monday as well.

*BSC-7 FTIR re-test results came in this week. ALL readings were at or below detectable! The consensus seems to be that the big hit on the first set of FTIRs was a false positive.
H2 INS
patrick.thomas@LIGO.ORG - posted 18:37, Friday 09 September 2011 (1377)
Ops Shift Summary
Cardboard container changed
2 deliveries for Richard
TCS ring heater installation on lower SUS structure for BSC 8
Disassembling clean room at mid X
Transitioned to laser hazard early for squeezer work on full locking of H1 IFO

Plot of > .5 micron dust counts attached. Note elevated levels in Bake-out lab (H0:PEM-LAB_DST3_5).
Non-image files attached to this report
H2 General
aidan.brooks@LIGO.ORG - posted 17:53, Friday 09 September 2011 (1376)
TCS RH medm screen and model
I updated the TCS RH model to include calculations of the power as a V*I, as R_th*I^2 (where R_th is the measured resistance of the RH before it is installed = 35.8 Ohms per segment for ITMY) and R = V / I.

The model was compiled and installed. I also updated the H2TCS_ITMY_RING_HT_CUSTOM.adl screen to show the new channels. All changes were added to the SVN.

The medm screen is attached below:
Images attached to this report
H2 General
christopher.guido@LIGO.ORG - posted 17:27, Friday 09 September 2011 - last comment - 17:46, Friday 09 September 2011(1374)
S1103182 Chasis changes (again) and recalibration
Steve O'Connor, Aidan Brooks, Christopher Guido

Wednesday night, we made a series of resistor changes to the S1103182 chassis(on both boards S1103183 and S1103184)which can be seen in yesterday's post, but today, we reverted the resistors back to the original values except for R44. These changes will be uploaded to the traveler. 

Afterwards, we tested the board (results attached as excel spreadsheet) and used the results to calibrate the H2TCS-ITMY_RING_HEATER screen. The changes to the gain and offset(in the filters) are listed below

H2TCS_ITMY_RING_HTR_SEG1_I_MON 
Offset = -3.22 counts
Gain   = -0.0247 mA/count

H2TCS_ITMY_RING_HTR_SEG2_I_MON
Offset = -7.135 counts
Gain   = -2.456e-2 mA/count 

H2TCS_ITMY_RING_HTR_SEG1_V_MON 
Offset = -145.2 counts
Gain   = 1.281e-3 V/count

H2TCS_ITMY_RING_HTR_SEG2_V_MON 
Offset = -129.9 counts
Gain   = 1.364e-3 V/count
Non-image files attached to this report
Comments related to this report
aidan.brooks@LIGO.ORG - 17:46, Friday 09 September 2011 (1375)
Full details of ring heater calibrations. We noted that the measured current to the load was about 3.5% lower than the requested current. Once the ring heater is actually in place we plan on doing a more thorough calibration.

H2:TCS-ITMY_RING_HTR_SEG1_I_MON_OFFSET = -3.22 counts
deWhiten = zero at 0.4Hz, poles at 10 Hz, 1000Hz
H2:TCS-ITMY_RING_HTR_SEG1_I_MON_GAIN = -2.47E-2 mA/count

H2:TCS-ITMY_RING_HTR_SEG1_V_MON_OFFSET = -145.2 counts
deWhiten = zero at 0.4Hz, poles at 10 Hz, 1000Hz
H2:TCS-ITMY_RING_HTR_SEG1_I_MON_GAIN = 1.283E-3 V/count

H2:TCS-ITMY_RING_HTR_SEG1_TEMPERATURE_MON_OFFSET = -16192 counts
pole0.3Hz = pole at 0.3Hz
H2:TCS-ITMY_RING_HTR_SEG1_TEMPERATURE_MON_GAIN = 1.6E-2 deg C/count

H2:TCS-ITMY_RING_HTR_SEG1_LV_MON_GAIN = 1.235E-3 V/count

H2:TCS-ITMY_RING_HTR_SEG1_AC_I_SET_GAIN = 40.96 counts/mA
H2:TCS-ITMY_RING_HTR_SEG1_DC_I_SET_GAIN = 40.96 counts/mA

H2:TCS-ITMY_RING_HTR_SEG1_ISQR_PWR_RAD_GAIN = 1E-6 W^2/(mW^2)
H2:TCS-ITMY_RING_HTR_SEG1_MEASURED_R_GAIN = 1E3 Ohms/(kOhm)
H2:TCS-ITMY_RING_HTR_SEG1_VI_PWR_RAD_GAIN = 1E-3 W/(mW)

H2:TCS-ITMY_RING_HTR_SEG2_I_MON_OFFSET = -7.1 counts
deWhiten = zero at 0.4Hz, poles at 10 Hz, 1000Hz
H2:TCS-ITMY_RING_HTR_SEG2_I_MON_GAIN = -2.456E-2 mA/count

H2:TCS-ITMY_RING_HTR_SEG2_V_MON_OFFSET = -129.9 counts
deWhiten = zero at 0.4Hz, poles at 10 Hz, 1000Hz
H2:TCS-ITMY_RING_HTR_SEG2_I_MON_GAIN = 1.364E-3 V/count

H2:TCS-ITMY_RING_HTR_SEG2_TEMPERATURE_MON_OFFSET = -16192 counts
pole0.3Hz = pole at 0.3Hz
H2:TCS-ITMY_RING_HTR_SEG2_TEMPERATURE_MON_GAIN = 1.6E-2 deg C/count

H2:TCS-ITMY_RING_HTR_SEG2_LV_MON_GAIN = 1.235E-3 V/count

H2:TCS-ITMY_RING_HTR_SEG2_AC_I_SET_GAIN = 40.96 counts/mA
H2:TCS-ITMY_RING_HTR_SEG2_DC_I_SET_GAIN = 40.96 counts/mA

H2:TCS-ITMY_RING_HTR_SEG2_ISQR_PWR_RAD_GAIN = 1E-6 W^2/(mW^2)
H2:TCS-ITMY_RING_HTR_SEG2_MEASURED_R_GAIN = 1E3 Ohms/(kOhm)
H2:TCS-ITMY_RING_HTR_SEG2_VI_PWR_RAD_GAIN = 1E-3 W/(mW)
X1 SEI
corey.gray@LIGO.ORG - posted 15:25, Friday 09 September 2011 (1372)
BSC ISI Assembly Status

(Corey, Greg, Jim)

Unit#2 CPS Swap

Have swapped out the Capacitive Position Sensors (CPS) on Unit#2; originally-installed ones had bad flux/solder.  All of the new CPS's were installed with the ISI Locked and we were able to get voltages (read off Voltmeter) under 0.2V [most were close to ~0V];  note:  these voltages were observed to change when one touched various Stages and when the System was Unlocked.

When installing these Sensors, we observed that 1 of the 12 had issues (the voltage remained max-ed at ~13V no matter where the Target was located); this is a Fine-range Sensor.  This one was swapped out for a spare & it was installed and operational.

After the CPS's were installed the system was Unlocked.  Vincent will now check on the functionality of these Sensors.

Here is information for the CPS Probes & Boards/Gauges:

Location

Gauge type

Gauge S/N

Probe type

Probe S/N

Master/Slave

Phase

Sensitivity

ST1 - H1

8800

15881

2822-V

13576

Master

0

Coarse

ST1 - H2

8800

15854

2822-V

13583

Slave

180

Coarse

ST1 - H3

8800

13066

2822-V

13180

Slave

0

Coarse

ST1 - V1

8800

12831

2822-V

13572

Slave

180

Coarse

ST1 - V2

8800

13062

2822-V

13620

Slave

0

Coarse

ST1 - V3

8800

15860

2822-V

13577

Slave

180

Coarse

ST2 - H1

8800

15874

2822-V

13415

Slave

0

Fine

ST2 - H2

8800

15864

2822-V

13575

Slave

180

Fine

ST2 - H3

8800

12427

2822-V

12901

Slave

0

Fine

ST2 - V1

8800

15865

2822-V

13573

Slave

180

Fine

ST2 - V2

8800

15867

2822-V

13465

Slave

0

Fine

ST2 - V3

8800

15863

2822-V

13578

Slave

180

Fine

 

Unit#2 Cables Inventory:

Here are the drawing numbers used for Unit2 in-vacuum cables (except for the CPSs):

Corner1
Actuators

St1 H1:  D1100150 -40
St1 V1:  D1100150 -40
St2 H1:  D1000920 -135
St2 V1:  D1000920 -135

GS13:  D1000221 -100
L4C:  D1000221 -100
Trillium:  D1000221 -100

Corner2
Actuators

St1 H2:  D1100150 -40
St1 V2:  D1100150 -40
St2 H2:   D1000920 -135
St2 V2:  D1000920 -135

GS13:  D1000221 -100
L4C:  D1000221 -100
Trillium:  D1000221 -100

Corner3
Actuators

St1 H3:  D1000920 -135
St1 V3:  D1000920 -135
St2 H3:  D1000920 -135
St2 V3:  D1000920 -135

GS13:  D1000221 -100
L4C:  D1000221 -100
Trillium:  D1000221 -100

H2 INS
mindy.jacobson@LIGO.ORG - posted 11:21, Friday 09 September 2011 - last comment - 10:49, Monday 12 September 2011(1371)
TCS ring heaters and cables for BSC8 installed
The aLIGO TCS team has completed installing a pair of ring heaters on the lower SUS structure for BSC8.
Electrical compliance testing was passed. 
Three of the four cable sub-assemblies (indentured to D1001517) are tied to the lower structure. 
The fourth cable sub-assembly (D1001521, indentured to D1001517) has been secured to the box frame that mates the lower to upper structures.
Comments related to this report
mindy.jacobson@LIGO.ORG - 10:49, Monday 12 September 2011 (1379)
A collection of photos corresponding to BSC8 ring heater and cable installation can be found in ResourceSpace:
https://ligoimages.mit.edu/pages/search.php?search=%21collection720
H2 General
jonathan.berliner@LIGO.ORG - posted 18:17, Thursday 08 September 2011 (1369)
Thursday Ops Log

H1's Arms are now Full Open through the End Stations for Squeezer Work

- Lower 3/5's of SUS quad were coming off today, with Calum's crew from Caltech joining
- MX: BSC cleanroom frame moved or preparing to be moved to LVEA
- EX: BSC5 setting
- MY: OpLev work by Eric Black
- EY: ICC of dome in BSC6, HEPI fluid pumping in BSC6
- OSB Doors locked at 6:00pm

- H2:PSL - work on roof

- TCS crew from Caltech arrives to work on H1:TCS-ITMY (Cheryl/Aidan supervising)

- Delivery: Mount's Lock and Key arrives for work at CS (Ski supervising)

- Patrick revising dust monitor code, restarting h0epics1

H2 INS
patrick.thomas@LIGO.ORG - posted 18:16, Thursday 08 September 2011 (1370)
dust monitor code
All of the dust monitors being monitored by CDS in the labs and VEAs are now running with new code designed to interface with the new model of dust monitors. There are two major differences. The counting is started by the software instead of the front panel of the dust monitor. There is an array to keep better track of which types of commands caused error messages to avoid having an alarm be set, cleared and set gain repeatedly. I still have to test this code with the new model of the dust monitors.
H2 INS
christopher.guido@LIGO.ORG - posted 17:12, Thursday 08 September 2011 (1368)
Changes to S1103182 and calibrations on MEDM screen
Steve O'Conner, Aidan Brooks, Christopher Guido

Yesterday evening, we made a series of resistor changes to the S1103182 chassis(on both boards S1103183 and S1103184)as follows

R44 = 49.9 k-ohm
R63 = 69.8 k-ohm
R74 = 69.8 k-ohm
R8  = 30.1 k-ohm
R31 = 30.1 k-ohm
R43 = 2.05 k-ohm

Today, we tested the board (results attached as excel spreadsheet) and used the results to calibrate the H2TCS-ITMY_RING_HEATER screen. The changes to the gain and offset(in the filters) are listed below

H2TCS_ITMY_RING_HTR_SEG1_I_MON 
Offset = 16.48 counts
Gain   = -0.0498 mA/count

H2TCS_ITMY_RING_HTR_SEG2_I_MON
Offset = -8.827 counts
Gain   = -0.0492 mA/count 

H2TCS_ITMY_RING_HTR_SEG1_V_MON 
Offset = -82.2 counts
Gain   = 2.582e-3 mA/count

H2TCS_ITMY_RING_HTR_SEG2_V_MON 
Offset = -74.2 counts
Gain   = 2.564e-3 mA/count
Non-image files attached to this report
LHO FMCS
kyle.ryan@LIGO.ORG - posted 14:30, Thursday 08 September 2011 (1367)
Opened GV6 and GV8


			
			
LHO FMCS
kyle.ryan@LIGO.ORG - posted 13:40, Thursday 08 September 2011 (1366)
Began pumping BSC10 annulus ~1130 hrs. local
Looks like there was communication to PT410
X1 SUS
betsy.weaver@LIGO.ORG - posted 12:49, Thursday 08 September 2011 - last comment - 14:03, Friday 09 September 2011(1365)
ITMy LS status
The ITMy LS is off of the QUAD and has been rolled into the adjacent cleanroom.  We utilized the lifting equipment which we erected yesterday under the care of Calum and Kurt.  All went great and the equipment very easy to use and maneuver into the tight spots under the cartridge.  Well done SYS/FMP.  Pictures to follow.  We still have to separate the chains and do a little work on the structure before handing off to the Ring Heater crew.  Maybe one more hour.  
Comments related to this report
betsy.weaver@LIGO.ORG - 14:03, Friday 09 September 2011 (1373)
It did take us another hour or two to split the chains and remove the metal test mass. Pictures of Thursday's activities are at:

https://ligoimages.mit.edu/?c=718
Logbook Admin Bug
jeffrey.kissel@LIGO.ORG - posted 10:40, Thursday 08 September 2011 - last comment - 17:52, Thursday 15 September 2011(1363)
Comments under main entry to not retain formatting
Where a comment to an aLOG is attached under the main entry, the formatting that a user enters into the comment is not retained (carriage returns, tabs, spacing, etc.). However, the redundant separated comment (that appears at the top of the viewing page) does contain all formatting. This fix will be imperative once the requested feature of Comments Only Showing Up Under the Main Entry is implemented.
Comments related to this report
jonathan.hanks@LIGO.ORG - 17:52, Thursday 15 September 2011 (1413)
Fixed Sept 2011.  Will ask the LLO admins to apply the fix tomorrow.  It will not result in any downtime.
H2 SUS
jeffrey.garcia@LIGO.ORG - posted 16:44, Tuesday 06 September 2011 - last comment - 10:43, Thursday 08 September 2011(1345)
H2 ITMY Quad Vibration Absorber ON/OFF hammer tests
On Friday, Impulse response measurements were conducted using a Bruel and Kjaer (B&K) impact hammer and tri-axial accelerometer (also B&K) on the Quad  structure. The purpose of these investigations is to assess the effectiveness of the newly-installed Vibration Absorbers on the Sleeve of the QUAD structure. The Vibration Absorbers are arranged in a "spiral" arrangement around the frame of the sleeve structure of the Quad.  One VA is on each corner of the sleeve with the position heights incremented upwards around each corner - giving a "spiral" arrangement around the sleeve.

The accelerometer was positioned on the M0 chain side of the Quad on the cross brace of the Lower structure just above the Test Mass. It's X-axis was oriented along the beam path, the Y-axis crossing the beam path in the same horizontal plane, and the Z-axis vertically up through the Quad. The accelerometer's position did not change throughout each test.

Tap tests were conducted for three sub-structures of the Quad, with multiple spots selected within each sub-structure.  The three sub-structures are the Upper Structure (cage around M0/R0), the Lower Structure (cage surrounding everything below M0/R0), and the stiffening Sleeve Structure (structure surrounding the whole build) installed on August 19th. The Upper Structure had three tap test locations, the Lower Structure had four, and the Sleeve had five.  

The configuration for the BSC-ISI/QUAD system was:
BSC8 ISI - locked
H2 ITMY QUAD - unlocked, suspended with damping loops closed for both M0 and R0 chains.
Watchdogs did not trip during any of the tap tests.

Data was processed in real-time using the PULSE software provided with the B&K instruments. The PULSE software monitored for "double-hits" and for impact Force range. Data was then extracted after each measurement into .txt files that were imported and processed in Matlab. 

The VA OFF tests were conducted first. Three spots on the Upper Structure, four on the Lower, and five on the Sleeve were selected.  The VAs were then replaced to their previous locations, and the tap tests were repeated at the same locations for the VA ON tests.

The attached plots are Frequency response comparison plots of the Accelerometers in each degree of freedom (DoF) at each tap test location. The magnitude ((m/s^2)/N) of the accelerometer response is plotted against the frequency range (0.5-800Hz).

Each plot has a trace in dashed-red displaying the data from the tests with the VAs OFF and a trace in solid blue of the data from the tests with the VAs ON. Each plot is of the same tap test location for ON and OFF.

The pdf files are grouped by sub-structure (upper, lower, sleeve) and display the responses for all locations (in separate plots) on that sub-structure for a specific DoF. I have only attached the X and Y DoFs, but the Z DoF plots will be in the SVN.

Data collection parameters were:  0-800Hz response with a 0.5Hz resolution.  

----------------------
Tap Test Locations
*for location reference, when facing the Quad from the M0 chain, the "Beam Tube side" is on the right and the "Clean Room side" is on the left.*

Upper Structure:
location 1 - M0 side tapping from the Beam Tube Side across to the Clean Room side.
location 2 - R0 side tapping from Clean Room side across to the Beam Tube side.
location 3 - Beam Tube side - diagonal cross-brace in a downward direction.

Lower Structure:
location 1 - M0 bottom - from Beam Tube side across to the Clean Room side.
location 2 - R0 bottom - from Clean Room side across to the Beam Tube side.
location 3 - R0 side tapping on cross-brace just above the PUM from Clean Room to Beam Tube side
location 4 - M0 side tapping on cross-brace just above the PUM from Beam Tube to the Clean room side

Sleeve Structure:
location 1 - M0 bottom right corner of sleeve on the Beam Tube side
location 2 - R0 bottom right corner of sleeve on the Clean Room side
location 3 - M0 top left corner of sleeve on Clean room side
location 4 - R0 top right corner of sleeve on Clean room side
location 5 - diagonal cross brace on the Beam Tube side

Images attached to this report
Non-image files attached to this report
Comments related to this report
jeffrey.garcia@LIGO.ORG - 20:01, Wednesday 07 September 2011 (1362)
2 Supplemental Items:
--------

1.) Attached is a picture of the location of the accelerometer used for the tests.  The aLog automatically rotated the photo 90 deg counter-clockwise, but one can see the accelerometer on the cross-brace just above the test mass and slightly off center.

2.) The SUS SVN has been updated with the data and plots of these measurements as follows:

Data Location:
'~/sus/trunk/QUAD/H2/ITMY/Common/Vibration_Absorber_tap_tests/Data/'

where the file names denote the Vibration Absorber ON/OFF configuration, which sub-structure on the Quad, and the location of the measurement.

"VA_tap_test_data_VA_*OFF/ON*_*sub-struct*_*location*_110902.txt"

Plots are located in:
'~/sus/trunk/QUAD/H2/ITMY/Common/Vibration_Absorber_tap_tests/Plots/'
jeffrey.kissel@LIGO.ORG - 10:43, Thursday 08 September 2011 (1364)
Also, it should be noted that these tests were performed with the H2 ISI ITMY (BSC-ISI) *locked* for these measurements. The suspicion is that the resonant modes seen between ~10 and 50 Hz are modes of the support structure coupling through the locked BSC-ISI. We'll need further B&K transfer function + ST2 ISI transfer function measurements with the BSC-ISI unlocked in order to confirm; the hope is to obtain these after H2 SUS ITMY (QUAD)'s lower half is returned.
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