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JRA - 6JRA - 6VPHGs and Related SubjectsVPHGs and Related Subjects
Filippo Maria Zerbi… Filippo Maria Zerbi… … …on behalf of the JRA Teamon behalf of the JRA Team
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5Purpose of the JRAPurpose of the JRA
Breakthrough developments in the area of Breakthrough developments in the area of Volume phase Holographic GratingsVolume phase Holographic Gratings
Their use at IR wl (WP 1)Their use at IR wl (WP 1)
Their use at UV wl (WP 4)Their use at UV wl (WP 4)
Their use in non-traditional Their use in non-traditional Configurations (WP 2)Configurations (WP 2)
Non traditional fabrication Tech-s (WP 3)Non traditional fabrication Tech-s (WP 3)
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5Goals of the JRAGoals of the JRA
WP 1 – Infrared VPHGsWP 1 – Infrared VPHGs
WP 2 – Non Traditional Configurations WP 2 – Non Traditional Configurations
WP 3 – NonTraditional Fabrication ProcessesWP 3 – NonTraditional Fabrication Processes
WP 4 – UV VPHGs WP 4 – UV VPHGs
60 months – Science Grade High perf.s Cryo protos 60 months – Science Grade High perf.s Cryo protos 18 months – Lab Grade Cryo Protos18 months – Lab Grade Cryo Protos
60 months – Science Grade first non-DCG proto 60 months – Science Grade first non-DCG proto 18 months – Lab Grade first non-DCG proto 18 months – Lab Grade first non-DCG proto
60 months – Ready for application innovative config.s 60 months – Ready for application innovative config.s 18 months – Lab level innovative demonstrators 18 months – Lab level innovative demonstrators
60 months – Science Grade High perf.s UV dev.s60 months – Science Grade High perf.s UV dev.s18 months – Lab grade UV dev.s18 months – Lab grade UV dev.sDONEDONE
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5Highlights 1Highlights 1
First IR Lab Grating existsFirst IR Lab Grating exists
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First double-pass UV Cross Disperser existsFirst double-pass UV Cross Disperser existsHighlight 2Highlight 2
……Omissis…..Omissis…..
Reserved InformationReserved Information
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5Highlight 3Highlight 3
The first VPHG-based TF existsThe first VPHG-based TF exists
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5Highlight 4Highlight 4
S SCH3
CH3O
O
O
O
F
F
FF
F
F
n
The First Polymer Grating ExistsThe First Polymer Grating Exists
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How could they How could they achieve all their achieve all their milestones and deliver milestones and deliver all the deliverables IN all the deliverables IN SPITE of the delayed SPITE of the delayed cash flow ? cash flow ?
Didn’t we assign to these Didn’t we assign to these guys too much money guys too much money then ?then ?
QuestionQuestion
NO YOU DIDN’T !!NO YOU DIDN’T !!
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5Philosophy AdoptedPhilosophy Adopted(Oil, Garlic and (Oil, Garlic and
Paprika)Paprika)
Reagents were on-stock or borrowed (…stolen)Reagents were on-stock or borrowed (…stolen)
Omissis – Reserved InformationOmissis – Reserved Information
No Holography. direct replica of a Ronchi GratingNo Holography. direct replica of a Ronchi Grating
TF realised with existing spare gratingsTF realised with existing spare gratingsTF tested with a modified commercial WebCamTF tested with a modified commercial WebCam
No cryo-tests on IR devices available yetNo cryo-tests on IR devices available yet
S SCH3
CH3O
O
O
O
F
F
FF
F
F
nPrinciples OK, Show Stopper none….Principles OK, Show Stopper none….…………but Leftovers manybut Leftovers many
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5LeftoversLeftovers
Full warm and some cryo Full warm and some cryo characterization of IR devicescharacterization of IR devicesCalibrated Source-Coll-Calibrated Source-Coll-
Camera-Detector system on Camera-Detector system on the Optical Table for TF the Optical Table for TF Measure Efficiency of the Ronchi ReplicaMeasure Efficiency of the Ronchi Replica
Assess the ghost problem Assess the ghost problem theoretically and in existing theoretically and in existing protos protos
Obtain the first “Holographic” Polymer GratingObtain the first “Holographic” Polymer Grating
ETC. ETC.ETC. ETC.
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5Next Steps on the Roadmap 1Next Steps on the Roadmap 1
Toward a Science Grade IR gratingToward a Science Grade IR grating
Toward a UV Science Grade Cross-DisperserToward a UV Science Grade Cross-Disperser
•Cryo Tests outcome is crucialCryo Tests outcome is crucial•How does the efficiency or the WF changes ?How does the efficiency or the WF changes ?•Can we drive the changes by design ?Can we drive the changes by design ?
•Obtain a Complete Device and test itObtain a Complete Device and test it•Monitor materials and interfaces lossesMonitor materials and interfaces losses•Optimize the manufacturing processOptimize the manufacturing process
•Gelatine does NOT work well at blue UVGelatine does NOT work well at blue UV•Alternatives ? Alternatives ? T
rial and
Err
or
– M
an
y V
PH
Gs
Tri
al and
Err
or
– M
an
y V
PH
Gs
Entirely new IssueEntirely new Issue
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5Next Steps on the Roadmap 2Next Steps on the Roadmap 2
Toward a Science Grade non-traditional device (e.g. TF)Toward a Science Grade non-traditional device (e.g. TF)
Toward a Science Grade Polymer-based VPHGToward a Science Grade Polymer-based VPHG•Polymer Optimization (again and again)Polymer Optimization (again and again)•High Precision Deposition (INTERCAST)High Precision Deposition (INTERCAST)•Hologram versus Hologram ReplicaHologram versus Hologram Replica•Control over efficiency and wavefrontControl over efficiency and wavefront
•Specific VPH Specific VPH •Easy to handle Mechanical. AssemblyEasy to handle Mechanical. Assembly•Astronomical useful “zoology”Astronomical useful “zoology”•Why not to use polymer gratings (Synergy)Why not to use polymer gratings (Synergy)
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5New IssuesNew Issues
The High Resolution RegimeThe High Resolution Regime
Blaze Extender ConfigurationsBlaze Extender Configurations
Cryo PolymersCryo Polymers
•Echelles ? Echelles ? •IR-High Res. (R=5000,20000)IR-High Res. (R=5000,20000)•Stacking and Packaging.Stacking and Packaging.
•Polymer VPHGs are great in IR. Are they Cryo ?Polymer VPHGs are great in IR. Are they Cryo ?•Can we make a cryo family of them ?Can we make a cryo family of them ?
•Explore ways to scan or cover the superbalze.Explore ways to scan or cover the superbalze.
Alternative to DCG in the UVAlternative to DCG in the UV
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5Plot of future activitiesPlot of future activities
LeftoversLeftovers0404 0505 0606 0707 0808
RoadmpRoadmp
New New IssuesIssues
Design and partsDesign and partsAssemblingAssemblingTestingTesting
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The original working Hp The original working Hp 600 600 k€600 600 k€
““Traditional” Prototypes Traditional” Prototypes 240240240 k€240 k€Travel CostTravel Cost 120120480 k€480 k€
Polymer DevicesPolymer Devices 100100140 k€140 k€Manuf./Test Infrastructures 140 0 k€ Manuf./Test Infrastructures 140 0 k€
Didn’t we assign too much money to these people ? Didn’t we assign too much money to these people ?
None of the “New Issues” is budgetedNone of the “New Issues” is budgeted
2 PM/yr + 1 board/yr + Some “Intertravel”2 PM/yr + 1 board/yr + Some “Intertravel”It is 24 trips/yr -- for 18 “key persons”It is 24 trips/yr -- for 18 “key persons”[(J,H,K,UV1,UV2,UV3),4*TF]*2 = 32 unit[(J,H,K,UV1,UV2,UV3),4*TF]*2 = 32 unit
Each costs 5-10 K€ depending on the typeEach costs 5-10 K€ depending on the typeLet’s take an average (320+160)/2=240Let’s take an average (320+160)/2=240
1g of polymer is 1 K1g of polymer is 1 KYou need 5 g/test You need 5 g/test per specieper specie
Then substrate, then casting/coating, etc.Then substrate, then casting/coating, etc.
-- 0.2 g/grating needed-- 0.2 g/grating neededA laser is 25 k€ A laser is 25 k€
An IR Laboratory detector is 25 K€An IR Laboratory detector is 25 K€A good dewar is 25 K€A good dewar is 25 K€
Etc. Etc.Etc. Etc.
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5ConclusionsConclusions
•JRA activity is proceeding along the path and in scheduleJRA activity is proceeding along the path and in schedule
•Important synergies between partners have been created Important synergies between partners have been created •Synergies with other JRAs are starting (via KTN)Synergies with other JRAs are starting (via KTN)
•New Ideas are coming upNew Ideas are coming up•Industry interest is Industry interest is kept kept and enhancedand enhanced
•Working princples are testedWorking princples are tested•Progressively higher quality products are deliveredProgressively higher quality products are delivered
……..We would like to keep on going..We would like to keep on going