20 Nov 2008G v21 Optical & Vacuum Equipment Layouts Dennis Coyne Mike Smith Luke Williams 20 Nov 2008 Adv. LIGO Team Meeting, Caltech, Pasadena, CA

20 Nov 2008 G v2 2 Methodology ZEMAX and SolidWorks are key tools SolidWorks models are stored in the Adv. LIGO Project PDMWorks vault Import/export : manual or automated SOLIDWORKS OPTOMECHANICAL ENVELOPE LAYOUT ZEMAX OPTICAL LAYOUT OPTICAL LAYOUT CONSTRAINTS & REQUIREMENTS SOLIDWORKS OPTOMECHANICAL DETAIL LAYOUT SUBSYSTEM ASSEMBLIES

20 Nov 2008 G v2 3 Known All cavity lengths All COC and IO cavity optic positions  For each individual interferometer, H1, H2, L1 All COC and IO wedge angles, orientations and tolerances Beam dump & baffle locations

20 Nov 2008 G v2 4 References/Sources Zemax models SolidWorks Assemblies in the PDM Works vault:  D08xxxx_aligo_io_aos_nonfolded_layout.SLDASM  D08xxxx_aligo_io_aos_folded_layout.SLDASM References (available from the Systems wiki):  Optical Layout for Advanced LIGO, T Defines constraints, payload element properties and rationale Will be revised for the Systems FDR (before Apr-2009)  Optic Coordinates and Cavity Lengths (for Stable Recycling Cavities), T The definitive source – has tables with parameters & images of table layouts  Recycling Cavity Mirror Normal Vectors for H1, H2, and L1 (for Stable Recycling Cavities), T  BS, CP, and ITM Wedge Angle Tolerance, T  COC Polishing Specifications Spreadsheet To be a Table in the COC Final Design Report, E The most convenient reference for COC & RC optic parameters

20 Nov 2008 G v2 5 Unknown or TBD Optical lever beam layouts TCS CO2 beam paths are preliminary TCS Hartmann paths are preliminary ISC Table layouts are preliminary (HAM1/7 & HAM6/12)  … and not yet integrated into the overall layout PSL/IO Table layouts are preliminary?  … and not yet integrated into the overall layout (not necessary?) H2  Layout in HAM8 is preliminary & tight – may require a move of the chamber Independent check of Zemax The PDMWorks vault is a mess!  Needs a lot of clean up for rational layout completion  Need a systematic and practical approach for layout at the full interferometer scale and at the local chamber detail scale Revised Payload Mass Properties (E )

20 Nov 2008 G v2 6 Vacuum Equipment (VE) Rearrangement for LHO NEW INPUT/OUTPUT MANIFOLD TUBES (4 PLACES) MOVE THE MID STATION H2 BSC CHAMBERS TO THE END STATIONS (2 PLACES) POSSIBLY LONGER H2 INPUT MANIFOLD TUBE TO RELEIVE HAM8 PAYLOAD CONJESTION

20 Nov 2008 G v2 7 Zemax layout examples (from T ) HAM1HAM3

20 Nov 2008 G v2 8 Vertex Layout ITMy (BSC1) and BS (BSC2) chambers not shown HAM3 HAM4 BSC3 ITMy BS N.B.: Outriggers for the BS will be skewed from positions shown to fit to optics table.

20 Nov 2008 G v2 9 Input Optics Section HAM1 (ISC Readout Chamber) HAM2 HAM3 Vacuum Septum Plate New Larger Diameter Input Manifold

20 Nov 2008 G v2 10 PR3 PRM MC1 MC2 FI HAM2

20 Nov 2008 G v2 11 HAM3 MC2 PR2 FROM BS TO PR3 N.B.: Baffles are not shown.

20 Nov 2008 G v2 12 H1/H2 End Station New Vacuum Spools BSC-ISI Seismic Assembly, Stage-0 “ring” Support Tubes Arm Cavity Baffle Envelope ITMx, H2 Envelope ETM Transmission Telescope Envelope