Schedule for BSC09 "Abbreviated Vent & Closure"- II: Earth Quake Stop Adjustment of EX PUM Stage, January 9, 2015
Approved work to be done:
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Assessment of earth quake stops gaps for the test mass and pum stage
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Set lower EQ stops gaps to ~1.5 mm of test mass and pum stages
Friday, Jan. 9
AM
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Turnoff EX BRS (Seismic Beam Balance)
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Cleaning of BSC9
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Verify or transition to “Laser Safe”
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Move Clean Room (CR) into position for BSC9, check rooftop of Clean Room and attach sock, verify fans are working
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Turn on purge air for BSC9
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Verify supplies: Green Lantern, Flashlights, ion gun, etc. and make sure CR supplies are in place (gowns, change room, ...)
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Dust Monitors - verify operation and take readings for before and after entry
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Verify safe.snap files to save settings
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Follow M1300464-v4, "Procedure for preparing aLIGO IFO for pumpdown", Turn off high voltage
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Review and follow E1201035, "aLIGO Chamber Entry & Exit Procedures" checklist as annotated by Calum and Dennis for abbreviated entry
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Review and follow M1100068-v1, "Hanford Checklist - BSC Door Removal", Review door removal procedure with crew
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Start vent on BSC9
PM
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Remove door
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Document entrance
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Enter, assess quality of HR surface of ETMX with green flashlight
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Inspect EQ stops of test mass and pum stage
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Adjust EQ stops gaps.
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Verify optic, its suspension, and the reaction chain are free
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Assuming all goes well, obtain approval and signatures for volume closure, LHO (e.g., E1400474-v1).
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Obtain signoff signatures for chamber closure
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Notify door crew to hang door
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Verify readiness to pump down, follow M1300464-v4, "Procedure for preparing aLIGO IFO for pumpdown". Confirm all high voltages are off.
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Notify Vacuum crew of readiness to start pumps
The last step is at the time and discretion of the Vacuum crew.