Difference between revisions of "LBNL-2020: Cold Optics"
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== Agenda == | == Agenda == | ||
| + | Call in via Zoom: https://lbnl.zoom.us/j/189656154 | ||
| − | * Overview of LAT cold optics needs | + | Notes can be found here: https://docs.google.com/document/d/1win-exuExCS06CCN4JrH5tErXSio8yX50OJ_v_EUeCE/edit |
| − | * Overview of SAT cold optics needs | + | |
| − | * filters | + | * Overview of LAT cold optics needs [[file:Receiver_optics_numerology_20200305.pdf]] (Niemack) Note: alternative TMA cold optics configurations are still being studied [https://docs.google.com/presentation/d/1JIolo8FpjtXO1Hr8ZtG00-LQ-hrp1T9WAO708K4o1LA/edit#slide=id.g82958b8f8c_0_0 as described here] |
| − | * silicon lenses | + | * Overview of SAT cold optics needs (Kusaka) https://docs.google.com/presentation/d/1vFF59Qm_OEtMFR66J4tLmmSsXSuATZewfjd4nj5mGlE/ |
| − | * alumina optics | + | * filters (Tucker) [[File:Optical_filters_for_S4_April_2020.pdf]] |
| − | ** laminate | + | * silicon lenses (Golec) [[File:Silicon_Lens_AR_Production_CMBS4.pdf]] |
| − | ** epoxy | + | * alumina optics (mention if these coatings are applicable to sapphire) |
| − | ** thermal spray | + | ** laminate (Vieira) [[File:CMB-S4_cold_optics_illinois_March2020.pdf]] |
| − | ** laser | + | ** B/K laminated coatings for alumina (Marion) [[File:20200401_CMBS4_epoxy_coatings_Dierickx.pdf]] |
| − | ** metamaterail | + | ** epoxy (Hill) [[File:20200401_epoxyARonSapphire_cmbs4Meeting.pdf]] |
| + | ** thermal spray (Lee) https://www.dropbox.com/s/qstwm77yt2lt51u/Thermal_Spray_ARC_Lee_Jeong.pdf?dl=0 | ||
| + | ** laser (Tomo) [[File: 20200401_S4remoteworkshop.pdf]] | ||
| + | ** metamaterail (Golec) [[File:Alumina_mmAR_s4_lbnl2020.pdf]] | ||
| + | * Production and acquisition of alumina lenses | ||
| + | ** Akito (w/ input from Masaya Hasegawa @ KEK, Japan) | ||
| + | *** Vendor: NTK technologies (formerly known as Ceratec Inc.) http://www.ntktech.com/ | ||
| + | *** Material: 99.5% LD (low loss type: https://www.ceratech.co.jp/en/product/material/alumina/a9951ld/) | ||
| + | *** Shaping: shape and bake (no machining after baking), desired accuracy achieved (~+-25um across ~60cm lens), flange and holes can also be done. | ||
| + | *** Precedent: PB2a lenses and filters, SO SAT and LATR filters. | ||
| + | ** B/K Lenses (Marion, Ben S.) [[File:20200401_CMBS4_Lenses_Dierickx.pdf]] | ||
== Notes == | == Notes == | ||
Latest revision as of 10:56, 1 April 2020
Charge
With CD-1 coming up roughly one year from now we have to move to technology selection in the next half year. To meet this need we will have to have a review midyear. This session represents a first step toward this review where we will assess the technological performance and our ability to manufacture the required optical elements.
- discuss the LAT and SAT needs for cold optics (performance and production requirements of the LAT and SAT options)
- metal mesh filters
- alumina filters and lenses
- silicon lenses
- other filters
- HWP (optional)
- describe the currently demonstrated status of the required technologies to meet both the technical and production needs.
- Is there an existing supply path? If not how do we address that risk?
- Discuss any risks to production (e.g., is the alumina or other material supplies secure?)
- What is the development path? Will it be done by CD-1 or require post CD-1 work?
- Summarize/update technical risks, R&D / simulation needs to retire those risks.
Agenda
Call in via Zoom: https://lbnl.zoom.us/j/189656154
Notes can be found here: https://docs.google.com/document/d/1win-exuExCS06CCN4JrH5tErXSio8yX50OJ_v_EUeCE/edit
- Overview of LAT cold optics needs File:Receiver optics numerology 20200305.pdf (Niemack) Note: alternative TMA cold optics configurations are still being studied as described here
- Overview of SAT cold optics needs (Kusaka) https://docs.google.com/presentation/d/1vFF59Qm_OEtMFR66J4tLmmSsXSuATZewfjd4nj5mGlE/
- filters (Tucker) File:Optical filters for S4 April 2020.pdf
- silicon lenses (Golec) File:Silicon Lens AR Production CMBS4.pdf
- alumina optics (mention if these coatings are applicable to sapphire)
- laminate (Vieira) File:CMB-S4 cold optics illinois March2020.pdf
- B/K laminated coatings for alumina (Marion) File:20200401 CMBS4 epoxy coatings Dierickx.pdf
- epoxy (Hill) File:20200401 epoxyARonSapphire cmbs4Meeting.pdf
- thermal spray (Lee) https://www.dropbox.com/s/qstwm77yt2lt51u/Thermal_Spray_ARC_Lee_Jeong.pdf?dl=0
- laser (Tomo) File:20200401 S4remoteworkshop.pdf
- metamaterail (Golec) File:Alumina mmAR s4 lbnl2020.pdf
- Production and acquisition of alumina lenses
- Akito (w/ input from Masaya Hasegawa @ KEK, Japan)
- Vendor: NTK technologies (formerly known as Ceratec Inc.) http://www.ntktech.com/
- Material: 99.5% LD (low loss type: https://www.ceratech.co.jp/en/product/material/alumina/a9951ld/)
- Shaping: shape and bake (no machining after baking), desired accuracy achieved (~+-25um across ~60cm lens), flange and holes can also be done.
- Precedent: PB2a lenses and filters, SO SAT and LATR filters.
- B/K Lenses (Marion, Ben S.) File:20200401 CMBS4 Lenses Dierickx.pdf
- Akito (w/ input from Masaya Hasegawa @ KEK, Japan)
