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‘Ohana Delay Line. Installation at the summit Friday , O ctober 1 3 th 06 Pierre Fedou, LESIA. Agenda. Background Delay Line Installation Road Map. Background. ‘Ohana will connect CFHT and Gemini telescopes Via a fiber link. Main sub systems: - Injection modules
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‘Ohana Delay Line Installation at the summit Friday, October 13th 06 Pierre Fedou, LESIA
Agenda Background Delay Line Installation Road Map
Background ‘Ohana will connect CFHT and Gemini telescopes Via a fiber link Main sub systems: - Injection modules - Optical fiber links - Delay Line, our topic today - Beam combiner and IR camera
Background CFHT Jun and Aug 02, J, H, K band Keck I, Dec 02, K Gemini, Jul 03, H, K Injection modules status
Background Keck, installation Aug 04 Tests: Dec 04, Jun 05, K band May 06, H and K Fiber link status
Background Jun 03 & Oct 03 on IOTA, H, K band Jun 06, J, H, K Beam combiner & IR camera status
Delay Line • Designed in 03 and before • Built and tested, in France, mid 04 to mid 06 • Now ready to be re-installed at CFHT
Delay Line Translating stage Translating stage Input #1 Input #2 Fast scan Central carriage Output #2 Output #1
Delay Line 3 or 4 missions of 3 weeks Oct 06 Hardware Jan 07 Opto-mechanical & first lignment Mar 07 Alignment continued May 07 Optional
Delay line subsystem • Translating stage Aerotech • Translating stage Schneeberger • Central carriage • Railways • 6 metallic frames • Fast Scan • One computer
Dec 03 Module #1, version 1.0
New Module #1 Stone
SchneeBerger end Aerotech end Control command
Schneeberger end, looking outside Schneeberger trans. stage Central carriage Module #6 Module #5 rails
Schneeberger end, looking inside Module #3 rails Module #4 Module #5 Central carriage
Aerotech end, looking outside Aerotech translation stage Module #1 Driving belt MeterDrive Stone
Aerotech end, looking inside Aerotech Stone Module #1
Delay line • Our goals for this mission • Opening crates • Moving “big hardware” in Coude Room • Make first alignment of structure • Rails positioning 1 mm over 12.50 m
Delay line • Here is the line just before leaving
Delay line And now at the summit
Delay line The 7th crate concerns injection modules 7 crates: 6 + 1 2 metallic frames 2 metallic frames Aero metallic frame Schnee metallic frame Rails Aerotech on its stone bed Open question: where do we stock this 7th? Closed? Opened?
Delay line OK, let’s open crates! Nail draw Hammer
Delay line One module weighs ~80 kg and is 210 cm long One crate, two modules
Delay line Small parcels
Delay line rails Small parcel
Delay line wedges Need a (transportable) lifting jack
Delay line Metallic paper Thermal soldering
Delay line Vacuum cleaner Thermal soldering
Delay line Stabilized air Plastic film
Delay line Ready to be closed In progress Wedge
Delay line Wall of wood Wedge
Delay line Need a Nail Puller? Electric Hammer
Delay line Roof of wood Plastic film
Delay line We did it!
Delay line Aerotech side Beam combiner Table Schnee side Total Length = 14390mm Total Width = 930mm
Delay line Beam combiner Table
Delay line Week #1, Monday 16th : crates opened and all heavy parts moved in the Coude Room, Day Crew and Meudon Week #2, Monday 23rd : small pieces are moved and alignment made by Meudon Week #3, Monday 30th : continued, overturning, extra time just in case…
Road map • Delay Line installation: Oct 06 -> spring 07 • Injection Modules: time has been asked on Keck • Fiber Link beetween Gemini and CFHT: summer 07 • Beam Combiner installation: spring to summer 07 • Determination of length of the base: on going effort with IGN and OCA • First light: when ready, fall 07?