LBT Q2 2008 Eng/SW LBT Q2 2008 Eng/SW ReviewReview

ALPC – Primary Mirror ALPC – Primary Mirror Aluminum ShootingAluminum Shooting

21-Jul-200821-Jul-2008 LBT Q2 2008 Engineering RevieLBT Q2 2008 Engineering Revieww

Highlights (Q2/2008)Highlights (Q2/2008)

NoneNone

21-Jul-200821-Jul-2008 LBT Q2 2008 Engineering RevieLBT Q2 2008 Engineering Revieww

Progress (Q2/2008)Progress (Q2/2008) Planning From Q1 ReviewPlanning From Q1 Review

Make duplicate cell feedthrough for Make duplicate cell feedthrough for Sfigotto, pressure gauge, etc Sfigotto, pressure gauge, etc √√

Make duplicate Sfigotto pressure control Make duplicate Sfigotto pressure control √√

Next Aluminization is 11-15 Aug (on SX)Next Aluminization is 11-15 Aug (on SX)

21-Jul-200821-Jul-2008 LBT Q2 2008 Engineering RevieLBT Q2 2008 Engineering Revieww

Open IssuesOpen Issues TechnicalTechnical

Documentation for Aluminization System from OSU improved but Documentation for Aluminization System from OSU improved but needs more workneeds more work

Keep cleaning fluids out of cellKeep cleaning fluids out of cell Upgrade of Aluminization SystemUpgrade of Aluminization System Cleaning/Stripping SystemCleaning/Stripping System Glow discharge ?Glow discharge ? Locking devices unreliableLocking devices unreliable M3 swing arms need to be retracted farther than normal to clear M3 swing arms need to be retracted farther than normal to clear

belljarbelljar LBT personnel can do most of the process now, as long as nothing LBT personnel can do most of the process now, as long as nothing

goes wronggoes wrong Something always goes wrongSomething always goes wrong

ScheduleSchedule NoneNone

FinancialFinancial NoneNone

ResourcesResources NoneNone

21-Jul-200821-Jul-2008 LBT Q2 2008 Engineering RevieLBT Q2 2008 Engineering Revieww

Planning (Q3/2008)Planning (Q3/2008) Next Aluminization starts 11 Aug on SXNext Aluminization starts 11 Aug on SX

Monday 11th: Mirror Wet with Chemicals 11AM-3PMMonday 11th: Mirror Wet with Chemicals 11AM-3PM Tuesday 12th: Final Wipe of SX Mirror Surface at Zenith, Tip Tuesday 12th: Final Wipe of SX Mirror Surface at Zenith, Tip

telescope to Horizon telescope to Horizon Wednesday 13th: Mount Bell Jar & Start Pumpdown Wednesday 13th: Mount Bell Jar & Start Pumpdown Shoot aluminum Thursday night or Friday morning depending Shoot aluminum Thursday night or Friday morning depending

on weather and other issues. on weather and other issues. Warmup on Saturday Warmup on Saturday Vent to atmosphere on Sunday (or Monday AM). Vent to atmosphere on Sunday (or Monday AM). Dismount Bell on Monday 18th. Dismount Bell on Monday 18th. Park Bell on Tuesday 19th Park Bell on Tuesday 19th Prep for Washing DX on Weds 20th Prep for Washing DX on Weds 20th Wash DX on Thursday 21st AM (with enough manpower, we Wash DX on Thursday 21st AM (with enough manpower, we

might be able to wash DX on Weds 20).might be able to wash DX on Weds 20).