11-Nov-06 ILCSC - Valencia Global Design Effort 1 GDE Report and Discussion of Costs Barry Barish Caltech / GDE 6-Nov-06

11-Nov-06 ILCSC - Valencia Global Design Effort 2 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 3 Baseline to a RDR Jan JulyDec 2006 Freeze Configuration Organize for RDR Bangalore Review Design/Cost Methodology Review Initial Design / Cost Review Final Design / Cost RDR Document Design and CostingPreliminary RDR Released FrascatiVancouverValencia

11-Nov-06 ILCSC - Valencia Global Design Effort 4 RDR Cost Estimating 500 GeV BCD machine + “essentials” for 1 TeV 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 5 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 ILC Cost Estimate

11-Nov-06 ILCSC - Valencia Global Design Effort 6 WBS Level of Detail - Cryogenics % LHC refrig. single units

11-Nov-06 ILCSC - Valencia Global Design Effort 7 Technical Systems Vacuum systems Magnet systems Cryomodule Cavity Package RF Power Instrumentation Dumps and Collimators Accelerator Physics Global Systems Commissioning, Operations & Reliability Control System Cryogenics CF&S Installation Area Systems e- e+ damping RTML main BDS source source rings linac Cost Roll-ups

11-Nov-06 ILCSC - Valencia Global Design Effort 8 Vancouver Cost Data

11-Nov-06 ILCSC - Valencia Global Design Effort 9 Costs by Area System

11-Nov-06 ILCSC - Valencia Global Design Effort 10 Costs by Technical & Global System

11-Nov-06 ILCSC - Valencia Global Design Effort 11 Vancouver  Valencia Cost Reduction Design Scope Component Costs Physics Scope No big ticket items! Just lots of  1% effects

11-Nov-06 ILCSC - Valencia Global Design Effort 12 Design Changes Under Consideration RDR MBCCB 2  14mr IRs supported central injectorssupported Removal of service tunnelrejected conventional e+ sourcerejected RF unit modifications (24  26 cav/klys) supportedsubmitted reduced RF in DR (6  9mm  z ) supportedin prep DR race-track lattice (CFS)supportedin prep reduced static cryo overheadsupportedin prep removal linac RF overheadsupportedin prep single-stage bunch compressorrejected e- source: common pre-acceleratorsupportedin prep

11-Nov-06 ILCSC - Valencia Global Design Effort 13 Vancouver Costs for BDS Cost drivers –CF&S –Magnet system –Vacuum system –Installation –Dumps & Collimators Total Cost Additional costs for IR20 and IR2

11-Nov-06 ILCSC - Valencia Global Design Effort 14 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 15 Muon walls Baseline configuration: 18m and 9m walls in each beamline Scheme of a muon wall installed in a tunnel widening which provide passage around the wall Purpose: –Personnel Protection: Limit dose rates in one IR from other IR –Physics: Reduce the muon background in the detectors

11-Nov-06 ILCSC - Valencia Global Design Effort 16 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 5m –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 17 On-surface Detector Assembly Vancouver WBS considered the underground halls sized at 32m (W) x 72m (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 “7years until first beam” and “8years until physics run” Surface assembly allows to save 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 18 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 On-surface assembly

11-Nov-06 ILCSC - Valencia Global Design Effort 19 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 GeV (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 20 Cost details of new 14/14 baseline Updates from CF&S Magnets to be included Should we go to a single IR and push pull system and save 30% of BCD costs?

11-Nov-06 ILCSC - Valencia Global Design Effort 21 Push-Pull Evaluation Initiated by GDE & WWS at the end of September Detailed list of questions to be studied developed: 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 22 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 23 Luminosity Model – ½ RF Scenario Full rf system yearpeak Lavail% peaklum/yrint lum 12.00E+3310%80%3.57E E+3330%80%3.22E E E+3470%80%1.63E E E+3480% 2.86E E+41 Half rf system yearpeak Lavail% peaklum/yrint lum 12.00E+3310%80%3.57E E+3330%80%3.22E E E+3470%80%1.25E E E+3480% 1.57E E E+3480% 1.72E E+41

11-Nov-06 ILCSC - Valencia Global Design Effort 24 Change to Central Damping Rings

11-Nov-06 ILCSC - Valencia Global Design Effort 25 Cost Reductions Found (unvetted) 0.35% e- source: elim 1 NC beam, lasers to surface 0.14% e+ source: < # correctors, BPM, 2 nd target sta. 0.20% RF: fast ACD charging PS for modulators 1.21% Controls: Front End electronics, cable plant, ATCA, network infrastructure, LLRF changes 1.80% Installation (in contract labor) new basis of est: scale time & motion to task, bottom-up est. 0.91% PS engineering optimization 0.29% Cold Vacuum: remove fast acting valves and 4.91% total 15/16 of Turbo Molecular Pumps

11-Nov-06 ILCSC - Valencia Global Design Effort 26 On Tuesday, Tetsuo showed: Our efforts at Valencia identified another 4.91%!

11-Nov-06 ILCSC - Valencia Global Design Effort 27 Plans until Beijing (Feb. '07) NovemberDecemberJanuaryFebruary Valencia Further cost consolidation CCR preparation & submission Cost & Design Freeze 30/11 Prepare for Full Cost Review SLAC Cost Review 14-16/12 MAC 10-12/01/07 Final cost corrections and documentation Agency cost briefings Beijing: RDR draft published RDR final editing RDR prepare 1 st drafts

11-Nov-06 ILCSC - Valencia Global Design Effort 28 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 29 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 30 The ‘S’ R&D Task Forces S0 High-Gradient Cavities S1 High-Gradient Cryomodule S2 Test Linac S3 Damping Ring S4 Beam Delivery S5…Sn To address priority R&D items, RDB has convened several ‘task forces’. S0-S3 will report on Friday AM GDE plenary

11-Nov-06 ILCSC - Valencia Global Design Effort 31 The ‘S’ R&D Task Forces Addresses current ‘poor’ yield for EP cavities Primary goal: establish parameters for routinely producing 35 MV/m EP’d cavities –required  80% yield S0 High-Gradient Cavities S1 High-Gradient Cryomodule S2 Test Linac S3 Damping Ring S4 Beam Delivery S5…Sn H. Hayano, T. Higo, L. Lilje, J. Mammosser, H. Padamsee, M. Ross, K. Saito

11-Nov-06 ILCSC - Valencia Global Design Effort 32 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 33 Proposal of the 2nd 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 34 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 35 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?