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Extremely Large Telescope Design Study
Extremely Large Telescope Design Study
OPTICON BOARD MEETING11-12 October 2004
OPTICON BOARD MEETING11-12 October 2004
ELT Design Study ProposalELT Design Study Proposal
Objective:Objective:
Generic developments towards a European ELTGeneric developments towards a European ELT– Preparatory work for design & constructionPreparatory work for design & construction– Will give ELT Top level requirementsWill give ELT Top level requirements– Ensure Academic & Industrial synergy Ensure Academic & Industrial synergy
ProposalProposal
– 39 partners, 47 Work Packages39 partners, 47 Work Packages– 42 M42 M€ total, 22 M€ requested to EC€ total, 22 M€ requested to EC– Timescale 2005-2008 Timescale 2005-2008
Matrix structureMatrix structure
Participants (39)Participants (39)
WP/Task (47) WP/Task (47) AA BB CC ...... ZZ
11
22
33
44
55
……
4646
4747
Participants (39)Participants (39)
WP/Task (47) WP/Task (47) AA BB CC ...... ZZ
11
22
33
44
55
……
4646
4747
WP budget
Part.budget
Part.budget
Part.budget
WP budget
WP budget
Budget prep. tool
WP consol. tool
Project OrganizationProject Organization
Shares, in % of total estimated budget
Australia3.8%
France16.4%
Germany2.2%
International38.0%
Ireland0.5%
Israel0.2%
Italy10.4%
NL1.3%
Spain10.6%
Sweden4.8%
UK5.9%
CH1.4%
Belgium4.5%
Institute / university
40%
Industry22%
International organization
38%
ESO
Work Breakdown StructureWork Breakdown Structure
No Title Lead / Deputy Budget EC Request
01000 Management ESO / LUND 1,299 1,14702000 Science requirements INAF / Oxford 227 7904000 Wavefront Control ESO / Grantecan 8,652 4,48505000 Optical fabrication ESO / UCL 4,590 2,34406000 Mechanics ESO / t.b.d. 2,918 1,74107000 Control ESO / Starlink 2,138 1,10508000 Enclosure & infrastructure Grantecan / ESO 2,717 1,34309000 Adaptive Optics INAF / ESO 11,513 4,81610000 Observatory & science ops. ESO / UKATC 498 24911000 Instrumentation UKATC / Leiden / 2,455 1,310
INSU / Galway12000 Site characterization LUAN / IAC / ESO 2,521 1,41013000 Integrated modelling LUND / ESO 2,160 2,029
TOTAL k€ 41,686 22,058
No Title Lead / Deputy Budget EC Request
01000 Management ESO / LUND 1,299 1,14702000 Science requirements INAF / Oxford 227 7904000 Wavefront Control ESO / Grantecan 8,652 4,48505000 Optical fabrication ESO / UCL 4,590 2,34406000 Mechanics ESO / t.b.d. 2,918 1,74107000 Control ESO / Starlink 2,138 1,10508000 Enclosure & infrastructure Grantecan / ESO 2,717 1,34309000 Adaptive Optics INAF / ESO 11,513 4,81610000 Observatory & science ops. ESO / UKATC 498 24911000 Instrumentation UKATC / Leiden / 2,455 1,310
INSU / Galway12000 Site characterization LUAN / IAC / ESO 2,521 1,41013000 Integrated modelling LUND / ESO 2,160 2,029
TOTAL k€ 41,686 22,058
Engineering WP - OverviewEngineering WP - Overview
NNoo Title Topics Breadboard / Prototype Title Topics Breadboard / Prototype0100001000 Project ManagementProject Management [includes project engineering][includes project engineering]
0400004000 Wavefront ControlWavefront Control Phasing, actuators, metrology,Phasing, actuators, metrology, APE, WEB (wind)APE, WEB (wind)PSF properties, high contrastPSF properties, high contrastIImaging, error budgetingmaging, error budgeting
0500005000 Optical fabricationOptical fabrication SiC mirrors, Al mirrors, coatingsSiC mirrors, Al mirrors, coatings 8 x 1-m SiC segments8 x 1-m SiC segments
0600006000 MechanicsMechanics Composite materials, Maglev,Composite materials, Maglev, Friction Drive BBFriction Drive BBFriction drivesFriction drives
0700007000 ControlControl Support to other WP (APE, WEB)Support to other WP (APE, WEB)
0800008000 InfrastructureInfrastructure Enclosure concepts, renewable Enclosure concepts, renewable energies, Infrastructure, wind tunnelenergies, Infrastructure, wind tunnel
0900009000 Adaptive OpticsAdaptive Optics WFE on 100-m scale, AO unitsWFE on 100-m scale, AO units DM prototypesDM prototypesdesigns, large DM, novel concepts,designs, large DM, novel concepts,algorithms, simulationsalgorithms, simulations
1000010000 Science OperationScience Operation System operationsSystem operations
1100011000 InstrumentationInstrumentation Point designs, concepts, ADCPoint designs, concepts, ADC
1200012000 Site StudiesSite Studies Site parameters, measurements,Site parameters, measurements, [site testing equipment][site testing equipment] modeling, large scale atmospheremodeling, large scale atmosphere
1300013000 System modellingSystem modelling Integrated modelling toolsIntegrated modelling tools
NNoo Title Topics Breadboard / Prototype Title Topics Breadboard / Prototype0100001000 Project ManagementProject Management [includes project engineering][includes project engineering]
0400004000 Wavefront ControlWavefront Control Phasing, actuators, metrology,Phasing, actuators, metrology, APE, WEB (wind)APE, WEB (wind)PSF properties, high contrastPSF properties, high contrastIImaging, error budgetingmaging, error budgeting
0500005000 Optical fabricationOptical fabrication SiC mirrors, Al mirrors, coatingsSiC mirrors, Al mirrors, coatings 8 x 1-m SiC segments8 x 1-m SiC segments
0600006000 MechanicsMechanics Composite materials, Maglev,Composite materials, Maglev, Friction Drive BBFriction Drive BBFriction drivesFriction drives
0700007000 ControlControl Support to other WP (APE, WEB)Support to other WP (APE, WEB)
0800008000 InfrastructureInfrastructure Enclosure concepts, renewable Enclosure concepts, renewable energies, Infrastructure, wind tunnelenergies, Infrastructure, wind tunnel
0900009000 Adaptive OpticsAdaptive Optics WFE on 100-m scale, AO unitsWFE on 100-m scale, AO units DM prototypesDM prototypesdesigns, large DM, novel concepts,designs, large DM, novel concepts,algorithms, simulationsalgorithms, simulations
1000010000 Science OperationScience Operation System operationsSystem operations
1100011000 InstrumentationInstrumentation Point designs, concepts, ADCPoint designs, concepts, ADC
1200012000 Site StudiesSite Studies Site parameters, measurements,Site parameters, measurements, [site testing equipment][site testing equipment] modeling, large scale atmospheremodeling, large scale atmosphere
1300013000 System modellingSystem modelling Integrated modelling toolsIntegrated modelling tools
APEAPE
SCOPE :
Compare the performance of 3 types of wavefront sensors :
– Curvature
– Mach-Zehnder
– Pyramid
Test an active optics system which corrects at the same time segment misalignments, telescope misalignments, and deformations of thin meniscus mirrors.
Test the control software for an active optics system with several different wavefront sensors.
WEBWEBWEBWEB
Silicon Carbide prototypesSilicon Carbide prototypes
8 x 1-m class, different overcoatings8 x 1-m class, different overcoatings 4 blanks already at ESO4 blanks already at ESO Explore over-coating & figuring,Explore over-coating & figuring,
check for bimetallic effectscheck for bimetallic effects Huge AdvantagesHuge Advantages
– Stiffer, lighter, better thermo-mechanicalStiffer, lighter, better thermo-mechanicalproperties (than glass)properties (than glass)
– Higher control bandwidth (position)Higher control bandwidth (position)
– HardnessHardness
– Lighter, stiffer telescope structureLighter, stiffer telescope structure
– ~20 years of development, space-qualified~20 years of development, space-qualified
– potentially cost-effective if appropriate designpotentially cost-effective if appropriate design
BUTBUT– Needs qualification for segmented aperturesNeeds qualification for segmented apertures
Friction drive breadboardFriction drive breadboard
Mandatory – Hydraulic pads / tracks not an option !
Extremely Large Telescope Design Study
Extremely Large Telescope Design Study
PROPOSAL UPDATEPROPOSAL UPDATE
Cutting downCutting down (mandatory) Goal: (mandatory) Goal:
keep keep objectives despite only 8objectives despite only 8(.5)(.5) M€ EC funding M€ EC funding
Strategic thinkingStrategic thinking– Play on complementarities with other existing studiesPlay on complementarities with other existing studies
– Focus activities tightly; reduce number of alternative approachesFocus activities tightly; reduce number of alternative approaches
– Take time pressure into account, give time to time …Take time pressure into account, give time to time …
Cost reduction on SMEs: little room for maneuverCost reduction on SMEs: little room for maneuver
EC matching funds by partners, EC matching funds by partners, notnot by WPs by WPs freed EC funds re-distributed within single partner’s activitiesfreed EC funds re-distributed within single partner’s activities
or through re-organization of the distribution of tasks or through re-organization of the distribution of tasks
Incorporate new (self-financing) partners ?Incorporate new (self-financing) partners ?
Other sources of funding ? Other sources of funding ?
OptionsOptions
Two extreme situations:Two extreme situations:
1.1. Apply 50-50 rule Apply 50-50 rule 16 M 16 M€ total project cost€ total project cost2.2. Keep participants 19.6 M€ commitmentKeep participants 19.6 M€ commitment
19.6 + 8 = 27.6 M 19.6 + 8 = 27.6 M€ total project€ total project
1. impossible to achieve objectives, 2. quite optimistic1. impossible to achieve objectives, 2. quite optimistic
somewhere in between somewhere in between
BaselineBaseline: significant de-scoping, significant cuts: significant de-scoping, significant cuts
Variant AVariant A: assumes a new partner : assumes a new partner (e.g. AURA?)(e.g. AURA?) on a on a self-financing basis. self-financing basis.
Variant BVariant B: assumes some activities are transferred to : assumes some activities are transferred to a separate funding scheme a separate funding scheme (e.g. (e.g.
PPARC?)PPARC?)
Other optionsOther options Variant AVariant A: :
– Take-over by new partner on a self-financing basis:Take-over by new partner on a self-financing basis: e.g. AURA taking over SiC activities e.g. AURA taking over SiC activities 529 k 529 k€€– Could reduce baseline pain, but time scale problemCould reduce baseline pain, but time scale problem
Variant BVariant B::
– Some tasks under separate funding scheme, e.g. Some tasks under separate funding scheme, e.g. PPARC/Spain, but time scale problem + uncertaintyPPARC/Spain, but time scale problem + uncertainty
– ExamplesExamples 04800 WEB incl. control system 05200 Optical finishing and edge control 06400 Breadboard friction drive 08300 Wind studies 11000 Instrumentation (designs, ADC)
– Require some re-organization; may imply “drop outs” Require some re-organization; may imply “drop outs”
Iteration mechanismIteration mechanism
1 (top-down)
2 (feedback)
3
4
5 (feedback)
6
7
8 (feedback)
9
Guidelines & directivesGuidelines & directives WP budget iterationWP budget iteration
Draft scope of workDraft scope of work WP scope iteration WP scope iteration (Annex I to contract)(Annex I to contract)
Compile WPs, participants / EC contrib.Compile WPs, participants / EC contrib. WP budget iterationWP budget iteration
Check impact on participants,Check impact on participants, WP scope iteration WP scope iteration Check with ECCheck with EC WPs re-organization WPs re-organization Update scope of workUpdate scope of workUpdate directivesUpdate directives
Compile 2Compile 2ndnd iteration iteration
Compile participants / EC contributionsCompile participants / EC contributions WP budget iteration WP budget iteration
Get participants feedbackGet participants feedback WP scope iteration WP scope iteration
Final guidelines & directivesFinal guidelines & directives WPs re-organization WPs re-organization
Final update of WPs / scope of workFinal update of WPs / scope of work
Get participants approvalGet participants approval
Submit to ECSubmit to EC
Pro
ject
Offi
ceW
P M
ana
gers
We are here
Dec. ‘05
StatusStatus 11stst Iteration feedback received from WP Managers Iteration feedback received from WP Managers
““Raw” data after 1Raw” data after 1stst iteration iteration
– Relatively little de-scoping Relatively little de-scoping (t.b.c.)(t.b.c.), i.e. the WP managers “resist” , i.e. the WP managers “resist” (good if not always helpful)(good if not always helpful)
– Relies on extra PPARC Relies on extra PPARC (+ 1.114 M(+ 1.114 M€)€) & Spain & Spain (+ 1.836 M(+ 1.836 M€)€) funds funds 1 1stst not sure – 2 not sure – 2ndnd very uncertain very uncertain (in-kind contribution (in-kind contribution ))
– Total project reduced to 35 MTotal project reduced to 35 M€ € (higher than hoped for)(higher than hoped for)
– EC request reduced to 13.3 MEC request reduced to 13.3 M€ € (as expected from 1(as expected from 1stst iteration) iteration)
– Requested commitments of participants increased by 2.7 M€Requested commitments of participants increased by 2.7 M€Major increases: IAC, ESO, UK participants Major increases: IAC, ESO, UK participants Significant decreases: INAF, INSU-CRAL, FOGALE Significant decreases: INAF, INSU-CRAL, FOGALE (SME)(SME)
– No buffer left for more de-scoping while keeping objectivesNo buffer left for more de-scoping while keeping objectives
It will be tough …It will be tough …