Tip/Tilt Suspensions
For the PRC/SRC folding we will use Tip/Tilt stages modified to be used passively. No active damping, no coil drive. Just magnets and natural eddy current damping.
We have got five initial TT delivery. 4 is for the PRC/SRC folding. 1 is for tests/spare. We would employ 4 more TTs for the Input/Output steering, though we should seriously consider the foot prints of them.
We are using 4 newer versions of the TTs for the Input/Output steering.
TT SolidWorks models and drawings
There are many TT versions and hence there are many SolidWorks models too. Dependencies of the components are quite complicated. Here the SolidWorks model for the 40m passive tip-tilt with a modified mirror holder is packed.
D09xxx_00_TipTilt_Assembly_SECD.easm
D09xxx_00_TipTilt_Assembly_SECD_40m.zip
Assembly and Installation
- We will employ vertical springs designed by Valera@LLO. Mike@LLO suggested the items additionally needed for attaching the vertical springs.
Issues
- There was a problem of the backplane. A beam of the backplane blocked the laser light goes through the TT optic.
The design has been modified to address this issue. The modified design is here. TT_ECD_Drawings_for_40m_100215.pdf
Design/Installation/Assembly Details
Baking order to Bob: TTparts_2010-03-11_K_Arai.xls
Magnets: 10mm dia. 10mm thick SmCo magnet pressed in the mirror holder.
Wires: <200um musical wire for the mirror suspension / Bram will give us tungsten wires.
Titanium screws: We try grade 3 cheap Ti screws (#2-56 3/8") ~$1.3ea (c.f. McMaster ~$15ea)
To Do: Wire Jig drawing