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 …