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Mon Dec 20 10:47:29 2010, Koji, Update, IOO, Plan for closing the vacuum chambers
Mon Dec 20 16:57:58 2010, steve, Update, IOO, checking out & closing the vacuum chambers
Mon Dec 20 23:32:58 2010, kiwamu, Update, IOO, Re:checking out & closing the vacuum chambers
Mon Dec 20 22:56:20 2010, Jenne, Update, IOO, Plan for closing the vacuum chambers
Mon Dec 20 10:47:29 2010
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Plan for closing the vacuum chambers
Place the bars on the in-vac tables to mark the positions of the test mass suspensions. (ITMX/ITMY/
Check the table leveling again (ITMX/ITMY/ETMX/ETMY/BSC
Align the whole interferometer.
Check the OPLEV spots by either QPDs or apertures
Check the OSEM values (
MC1/2/3, BS, PRM,
, ITMX, ITMY,
Energize OMC PZTs.
We have removed the cards at the back of the HV driver.
Insert the card and check the connection.
Adjust the DC values at the middle of the range.
-> They have an internal bias circuit to provide +75V at the outputs. (D060287)
The actual voltages confirmed.
Adjust the physical knobs of the PZTs such that we can see the spots at the OMCR cam
If everything is fine, attach the access connector.
If still everythig is fine, put the BS heavy door.
- Do the following list for all of the testmass chambers.
Check if the OSEMs and the OPLEV are still fine.
Inspect the surface of the mirror with a laser pointer or a fiber coupled halogen light.
Blow the mirrors by the ionization gun.
Inspect the mirror surface again.
Move the suspension tower close to the door.
Make a single drag-wipe with iso
Move the SOS tower at the original place.
Check the OSEMs and the OPLEVs. Adjust the alignment.
Put the heavy door.
- Start slow pumping