GDE Report and Discussion of Costs Barry Barish
GDE Report and Discussion of Costs Barry Barish Caltech / GDE 6 -Nov-06 11 -Nov-06 ILCSC - Valencia Global Design Effort 1
Outline • Progress Since Last Mtg and Plans to RDR – – Vancouver first costing – July 06 Design Cost Optimization for RDR (Valencia) The RDR Outline and Plans for Writing GDE Coordination of Global R&D Program • Proposal for 2 nd Linear Collider Accelerator School • GDE Response to MAC Report – N. Walker • Planning for the Post RDR Period - B. Foster • Common Fund – B. Barish 11 -Nov-06 ILCSC - Valencia Global Design Effort 2
Baseline to a RDR July Jan Frascati Bangalore Vancouver Dec 2006 Valencia Freeze Configuration Organize for RDR Review Design/Cost Methodology Review Initial Design / Cost Design and Costing 11 -Nov-06 ILCSC - Valencia Global Design Effort Review Final Design / Cost RDR Document Preliminary RDR Released 3
RDR Cost Estimating • 500 Ge. V BCD machine + “essentials” for 1 Te. V • Follow ITER “Value” & CERN “CORE” model for International Projects – Provides basic agreed to costs [common “value” + in-house labor (man-hr)] • RDR will provide information for translation into any country’s cost estimating metric, e. g. Basis of Estimate => contingency estimate, in-house labor, G&A, escalation, R&D, pre-construction, commissioning, etc. • Assumes a 7 year construction phase 11 -Nov-06 ILCSC - Valencia Global Design Effort 4
ILC Cost Estimate • Based on a call for world-wide tender: lowest reasonable price for required quality • Classes of items in cost estimate: – Site-Specific (separate estimates for each site) – Conventional – global capability (single world est. ) High Tech – cavities, cryomodules, regional estimates • Cost Engineers will determine how to combine and present multiple estimates • WBS ; WBS Dictionary; Costing Guidelines are mature enough - cost estimating is underway 11 -Nov-06 ILCSC - Valencia Global Design Effort 5
WBS Level of Detail - Cryogenics % LHC refrig. single units 11 -Nov-06 ILCSC - Valencia Global Design Effort 6
Cost Roll-ups Area Systems Technical Systems ee+ damping source rings RTML main linac BDS Vacuum systems Magnet systems Cryomodule Cavity Package RF Power Instrumentation Dumps and Collimators Accelerator Physics Global Systems Commissioning, Operations & Reliability Control System 11 -Nov-06 Cryogenics ILCSC - Valencia Global Design Effort 7
Vancouver Cost Data 11 -Nov-06 ILCSC - Valencia Global Design Effort 8
Costs by Area System 11 -Nov-06 ILCSC - Valencia Global Design Effort 9
Costs by Technical & Global System 11 -Nov-06 ILCSC - Valencia Global Design Effort 10
Vancouver Valencia Design Scope Cost Reduction No big ticket items! Component Costs Physics Scope Just lots of 1% effects 11 -Nov-06 ILCSC - Valencia Global Design Effort 11
Design Changes Under Consideration RDR MB CCB 2 14 mr IRs supported central injectors supported Removal of service tunnel rejected conventional e+ source rejected RF unit modifications (24 26 cav/klys) supported submitted reduced RF in DR (6 9 mm sz) supported in prep DR race-track lattice (CFS) supported in prep reduced static cryo overhead supported in prep removal linac RF overhead supported in prep single-stage bunch compressor rejected e- source: common pre-accelerator supported 11 -Nov-06 ILCSC - Valencia Global Design Effort in prep 12
Vancouver Costs for BDS Total Cost • Cost drivers – CF&S – Magnet system – Vacuum system – Installation – Dumps & Collimators 11 -Nov-06 ILCSC - Valencia Additional costs for IR 20 and IR 2 Global Design Effort 13
2/20 mrad 14/14 mrad • Motivation – Reduce costs • 2 mrad beam line expensive, risky, especially extraction line • Common collider hall – Advantages • Improved radiation conditions in the extraction lines • Better performance of downstream diagnostics • Easier design and operation of extraction optics and magnets • Reduced back scattering from extraction line elements – Disadvantages • Impact on physics (appears minor at present). • Simpler incoming beam optics • R&D on small crossing angles will continue as alternative 11 -Nov-06 ILCSC - Valencia Global Design Effort 14
Muon walls • Purpose: – Personnel Protection: Limit dose rates in one IR from other IR – Physics: Reduce the muon background in the detectors Scheme of a muon wall installed in a tunnel widening which provide passage around the wall Baseline configuration: 18 m and 9 m walls in each beamline 11 -Nov-06 ILCSC - Valencia Global Design Effort 15
Reduced Muon Walls • Considerations – The estimation of 0. 1% beam halo population is conservative and not supported by any simulations – The min muon wall for personnel protection is 5 m – Detector can tolerate higher muon flux. – Cost of long muon spoilers is substantial, dominated by material cost – Alternatives – muon spoilers need study • The caverns will be built for full length walls, allowing upgrade if higher muons flux would be measured • MDI panel accepted this change. 11 -Nov-06 ILCSC - Valencia Global Design Effort 16
On-surface Detector Assembly • Vancouver WBS considered the underground halls sized at 32 m (W) x 72 m (L) each to allow underground assembly of the largest considered detector. • Conventional Facilities Schedule gives detector hall is ready for detector assembly 5 yrs from project start – If so, cannot fit our goal of “ 7 years until first beam” and “ 8 years until physics run” • Surface assembly allows to save 2 -2. 5 years and allows to fit into this goal – The collider hall size may be smaller (~40 -50%) in this case – A building on surface is needed, but savings may be still substantial • Optimization needs to be done 11 -Nov-06 ILCSC - Valencia Global Design Effort 17
On-surface assembly 11 -Nov-06 ILCSC - Valencia CMS assembly approach • Assembled on the surface in parallel with underground work • Allows pre-commissioning before lowering • Lowering using dedicated heavy lifting equipment • Potential for big time saving • Reduce size of underground hall required Global Design Effort 18
MDI Related Design Changes • Some cost / performance design changes would affect physics performance or reach. We are trying to pick items without major impact or are reversible changes – Energy reach: maintain 500 Ge. V (but redefine performance at that energy) – Peak Luminosity; (reduce for initial running; but, upgradeable) – Two detectors preserved, but one beam line + push-pull • These are being fully discussed and coordinated with the Physics Community – MDI Panel; WWS; Physics Parameter Group 11 -Nov-06 ILCSC - Valencia Global Design Effort 19
Cost details of new 14/14 baseline Should we go to a single IR and push pull system and save 30% of BCD costs? Updates from CF&S Magnets to be included 11 -Nov-06 ILCSC - Valencia Global Design Effort 20
Push-Pull Evaluation • Initiated by GDE & WWS at the end of September • Detailed list of questions to be studied developed: http: //www-project. slac. stanford. edu/ilc/acceldev/beamdelivery/rdr/docs/push-pull/ • Large group of accelerator and detector colleagues, from ILC and other projects, is participating in design and discussion of these question • The task force of detector experts was formed to contribute to detailed evaluation of the whole set of technical issues 11 -Nov-06 ILCSC - Valencia Global Design Effort 21
Reduced # Bunches Impact of ILC operation with a reduced number of bunches Introduction As a possible cost reduction option, a proposal to operate with half the number of bunches (approximately 1330 bunches) over the same train length (one ms) is being considered. Because of a factor of two reduction in the size of the RF system, this modification will result in a net savings of 2 -3% of the total project cost. Although the peak luminosity of the machine will be reduced by a factor of two, a relatively straightforward upgrade of the RF system can fully restore the machine’s luminosity performance to that of the current baseline. 11 -Nov-06 ILCSC - Valencia Global Design Effort 22
Luminosity Model – ½ RF Scenario Full rf system year peak L avail % peak lum/yr int lum 1 2. 00 E+33 10% 80% 3. 57 E+39 2 6. 00 E+33 30% 80% 3. 22 E+40 3. 57 E+40 3 1. 30 E+34 70% 80% 1. 63 E+41 1. 98 E+41 4 2. 00 E+34 80% 2. 86 E+41 4. 84 E+41 lum/yr int lum Half rf system year peak L avail % peak 1 2. 00 E+33 10% 80% 3. 57 E+39 2 6. 00 E+33 30% 80% 3. 22 E+40 3. 57 E+40 3 1. 00 E+34 70% 80% 1. 25 E+41 1. 61 E+41 4 1. 10 E+34 80% 1. 57 E+41 3. 18 E+41 5 1. 20 E+34 80% 1. 72 E+41 4. 90 E+41 11 -Nov-06 ILCSC - Valencia Global Design Effort 23
Change to Central Damping Rings 11 -Nov-06 ILCSC - Valencia Global Design Effort 24
Cost Reductions Found (unvetted) 0. 35% 0. 14% 0. 20% 1. 21% 1. 80% 0. 91% 0. 29% 4. 91% 11 -Nov-06 ILCSC - Valencia e- source: elim 1 NC beam, lasers to surface e+ source: < # correctors, BPM, 2 nd target sta. RF: fast ACD charging PS for modulators Controls: Front End electronics, cable plant, ATCA, network infrastructure, LLRF changes Installation (in contract labor) new basis of est: scale time & motion to task, bottom-up est. PS engineering optimization Cold Vacuum: remove fast acting valves and total 15/16 of Turbo Molecular Pumps Global Design Effort 25
On Tuesday, Tetsuo showed: Our efforts at Valencia identified another 4. 91%! 11 -Nov-06 ILCSC - Valencia Global Design Effort 26
Plans until Beijing (Feb. '07) November 2006 December January February 2007 Valencia Further cost consolidation CCR preparation & submission Cost & Design Freeze 30/11 Prepare for Full Cost Review SLAC Cost Review 14 -16/12 Final cost corrections and documentation MAC 10 -12/01/07 Agency cost briefings RDR prepare 1 st drafts RDR final editing Beijing: RDR draft published 11 -Nov-06 ILCSC - Valencia Global Design Effort 27
ILC Documents • Several reports for different audiences • Brochure – non-technical audiences, ready now • “Quantum Universe” level booklet ~30 pages • Executive Summary ~ 30 pages • Physics motivation, accelerator and detectors • RDR Report ~ 300 pages • high level description of the accelerator • DCR Report ~ 250 pages • physics and detectors • 11 -Nov-06 ILCSC - Valencia Global Design Effort 28
RDR Report • RDR is a high level description of the accelerator, CFS, sites and costs • A snapshot of what we propose to build – not a history of R&D, design evolution, and alternatives • Editors: – Nan Phinney (SLAC), Nobu Toge (KEK), Nick Walker (DESY) • Original schedule was complete draft now, but has been pushed back because of cost iterations 11 -Nov-06 ILCSC - Valencia Global Design Effort 29
The ‘S’ R&D Task Forces S 0 High-Gradient Cavities S 1 High-Gradient Cryomodule S 2 Test Linac S 3 Damping Ring S 4 To address priority R&D items, RDB has convened several ‘task forces’. S 0 -S 3 will report on Friday AM GDE plenary Beam Delivery S 5…Sn 11 -Nov-06 ILCSC - Valencia Global Design Effort 30
The ‘S’ R&D Task Forces S 0 High-Gradient Cavities S 1 High-Gradient Cryomodule S 2 Test Linac S 3 Damping Ring S 4 • Addresses current ‘poor’ yield for EP cavities • Primary goal: establish parameters for routinely producing 35 MV/m EP’d cavities – required 80% yield Beam Delivery S 5…Sn 11 -Nov-06 ILCSC - Valencia H. Hayano, T. Higo, L. Lilje, J. Mammosser, H. Padamsee, M. Ross, K. Saito Global Design Effort 31
What Happens after Beijing? • Public Release of Draft RDR and Preliminary Costing at Beijing – Cost Reviews, etc – Finalize RDR by Summer 2007? • Enter into Engineering Design Phase – Planning underway internally – Design will evolve through value engineering and R&D program – General Goal is to have Construction Proposal ready by 2010 11 -Nov-06 ILCSC - Valencia Global Design Effort 32
Proposal of the 2 nd International LC Accelerator School in 2007 • First LC School held May 19 -27, 2006, in Sokendai, Japan -- A big success! • Our proposal: – to hold a second topical LC school similar to the first school – solicit advisory help from USPAS and CAS – tentative location and time is Erice, September. October, 2007 11 -Nov-06 ILCSC - Valencia Global Design Effort 33
Summary • Status of Costing – First costing available at Vancouver (July) – Cost to performance optimization • Component level cost reduction (requirements) • Machine design changes • Changes effecting physics performance • Status & Plans for design modifications – Several proposals accepted and some rejected – Changes having physics impact (Valencia) – Complete RDR by Beijing Meetings • Global planning for critical R&D beginning – Formation of ‘S’ task forces 11 -Nov-06 ILCSC - Valencia Global Design Effort 34
Final Comments • Discussion Items (RDR) – The MAC Review in January? Preview of RDR and Costs or list of items? – Informing ILCSC (Feb 4? ) – Informing FALC ? – Strategy for Release – ICFA Feb • How are we going to approach getting candidate sites? Who solicits? 11 -Nov-06 ILCSC - Valencia Global Design Effort 35
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