Reports until 15:25, Friday 09 September 2011
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