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LIGO-G050xxx-00-DAdvanced LIGOSUS Installation into BSC Chambers:Mechanical FixturesDennis Coyne(with input from many)G050245-00May 4th2005LIGO-G050xxx-00-DScopez Scope limited to installation of Adv. LIGO SUS into BSC chambers(although use of fixtures for installation of other equipment is noted)z Identify the major steps in the mechanical installation sequence and the tooling or procedure development needed to support the installationz Specifically address review of two special purpose installation fixtures: Payload Polar Positioning Fixture (P3F)[1]: A fixture which supports payloads for the BSC optics table from underneath and precisely positions the payload (in a polar coordinate system). Articulated Installation Arm: A multi-linkage fixture which mounts to the BSC main access port flange, reaches outside to pick up BSC optics table payloads and reaches inside to transfer the payload to the P3F (or possibly to directly transfer the payload to the optics table, if a vertical lift/positioning capability is added to it's interface).z Subsystem assembly is not addressed. Electronics installation and optical alignment are also not within the scope of this document or associated review.[1] OK, I admit that this is a lame name, but I don't care for the alias "lazy Susan". Any better names?LIGO-G050xxx-00-DApplicable Documents1) O. Spjeld, Advanced LIGO Quad Suspension Installation Fixtures Design Review, 26 Apr 2005, LIGO-T050071-002) K. Mailand, Advanced LIGO Lower Quad Suspension Installation Fixture Arm, 2 May 2005, LIGO-T050073-003) D. Coyne, Stress Analysis of the Lower BSC Chamber with an Installation Fixture Cantilevered from the Main Port Flange, 17 Dec 2004, LIGO-T040234-004) D. Coyne, Advanced LIGO Assembly & Installation Plan, 14 Oct 2004, LIGO-G040459-005) J. Romie, C. Torrie, M. Perreur-Lloyd, Advanced LIGO Quadruple Pendulum Suspension Failure Modes and Subsequent Repair Approaches, 19 Jul 2004, LIGO-E040329-036) B. Bland, C. Gray, K. Ryan, R. Savage, Observatory Contamination Control Plan, 8 Mar 2001, LIGO-M990034-C7) K. Mason, Initial Alignment Storyboard (LASTI), 18 Mar 2005, LIGO-pending.8) C. Torrie, et. al., Controls Prototype ETM Suspension, presentation at the LSC Meeting, 22 Mar 2005, LIGO-G050175-019) C. Cantley, et. al., ETM Controls Prototype: "3 & 1" Assembly Technique, LIGO-T050034-0010) D. Coyne, Seismic Isolation System (SEI) Payload Mass Properties (Advanced LIGO), 18 Mar 2004, E040136-0011) …LIGO-G050xxx-00-DPayload to be Installed in BSC Chambers z SUS:» ITM (quadruple pendulum)» ITM/FM combined assembly» BS (triple pendulum» ETM (quadruple pendulum)– So far this is the only SUS/BSC assembly with any significant design detail– ITM is very similar– BS is lighter but similar in dimensionsz Non-SUS:» AOS ETM Transmission Telescope» AOS Beam Dumps (possibly baffles separate from SUS)» AOS Pick Off Mirror Assemblies» SEI Payload Mass Make-Up & Balance Mass» Instrumentation, misc.LIGO-G050xxx-00-DLayout of the ETM SUS Controls prototype, reference LIGO-T010103710 mm x 550mm To 440 mm x 440 mm2005 mmLIGO-G050xxx-00-DETM Controls Prototype Mass Budgetz UPPER» TOP MASS, 22 kg x 2 (S) = 44 kg» Tablecloth etc … (NS) 15 kg + 25 % C = 19 kg» Top Stage (NS) 24 kg + 25 % C = 30 kg» Ring (NS) 5 kg + 100 % C = 10 kg» UPPER STRUCTURE 37 kg + 25 % C = 46 kgzLOWER» UI MASS, 22 kg x 2 (S) = 44 kg» PEN MASSES, 40 jg x 2 (S) = 80 kg» TEST MASSES, 40 kg * 2 (S) = 80 kg» CLAMPING etc, 23 + 25 % C (NS) = 29 kg removable ?» Ring (NS) 5 kg + 100% C = 10 kg» Lower Structure (NS) 23 kg + 25% C = 29 kgTOTAL = 422 kgOVERALL NON-SUSPENDED inc. STRUCTURE ~ 140 kg *Cf. 418 kg from LIGO-T03013718thMarch8kg30kg42kg6kg50kg136 kgUpper Section = 149 kg, or 328 lbs.Lower Section = 272 kg, or 600 lbsTotal = 422 kg, or 930 lbs.LIGO-G050xxx-00-DBSC SUS are Two-Part Assysz The BSC SUS assemblies have an upper and lower section which are joined just before installation» Two-section design facilitates welded silica fiber welding and upper stage wire suspension assembly & disassembly (in the event of fiber failure)» Total height of BSC SUS assemblies exceeds BSC door height, but individual sections can fit through the doorz Enables two fundamental approaches to installation:» Assembly entire SUS onto SEI optics table outside the chamber & then install as a “cartridge” from above (after removing BSC chamber dome)– This is the preferred approach for initial installation» Bring lower section through one of the BSC access ports and join to the upper section– This is essential for repairs and replacement (e.g. broken silica fiber or magnet bond)LIGO-G050xxx-00-D“3 & 1” assembly Technique, reference LIGO–T050034LIGO-G050xxx-00-DLIGO-G050xxx-00-DRECEIVECOC OPTICSINSPECT &INVENTORYSTOREBONDQUADEARSSTOREQUADOPTICSTRANSPORTTO VEARECEIVESUSPARTSINSPECT &iNVENTORYCLEAN &UHV BAKEWRAP &INVENTORY& STOREQUADMECHANICALSUB-ASSY.UPPERQUAD SUSASSYWRAP SUS& STOREAIR-RIDETRANSPORTTO VEARECEIVEGAZEBOFIXTURECLEAN &AIR BAKEGAZEBOASSY./PREPGAZEBOSINGLE PEND.MECHANICALSUB-ASSY.TRIPLEMECHANICALSUB-ASSY.TRIPLE SUSSUB-ASSY(SANS OPTIC)SINGLE SUSSUB-ASSY(SANS OPTIC)WRAP SUS& STOREWRAP SUS& STORECARTTRANSPORTTO LVEACARTTRANSPORTTO LVEABONDMAGNETS,STANDOFFSSTORETRIPLE &SINGLEOPTICSFINALSINGLESUS ASSYFINALTRIPLE SUSASSYWRAP,STORE/STAGESTAGE INPREP FORHAM INSTALLWRAP,STORE/STAGESTAGE INPREP FORQUAD FINALASSYRECEIVESEIPARTSINSPECT &iNVENTORYCLEAN & UHVBAKESMALL PARTSSTORELARGEPARTSSTORESMALLPARTSRECEIVESEI BSCASSY CART/FIXTURECLEAN & PREP& POSITIONCART/FIXTURERECEIVESEI HAMASSY CART/FIXTURECLEAN & PREP& POSITIONCART/FIXTUREMECHANICALSUB-ASSY.SEI BSCASSY. & C/OSEI HAMASSY. & C/OWRAP, PACKSTORE/STAGEAIR-RIDETRANSPORTTO VEASTAGE INPREP FORHAMINSTALLRECEIVE SEIBSCCARTRIDGEINSTALLFIXTURECLEAN & PREP& POSITIONSTAGEFIXTUREWRAP, PACKSTORE/STAGEAIR-RIDETRANSPORTTO VEASTAGE INPREP FORCARTRIDGEINSTALLATTACHUPPER QUADTO BSC SEIOPTICS TABLELOWER QUADASSY. - WELDFIBERSRECEIVEFIBER/RIBBONPULLINGMACHINESETUP & C/OFIBER PULLINGMACHINEFABRICATEFIBERSSTORESURVEY/ALIGN QUADSUSBSCCARTRIDGEINSTALLCOC/IOSUS/IOSEIINSKEYBSC/SUS Install StepsLIGO-G050xxx-00-DBasic BSC Cartridge Installation(2) Set up Cartridge Assembly Stand under BSC cleanroom adjacent to BSC chamber(0) Prerequisites completed (Initial LIGO detector components removed, HEPI installed, etc.)(1) Stage cleaned, assembled, tested subsystem units in (L)VEA, Place Cleanrooms, Remove Upper Dome from the BSC chamber, prepare …(3)


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