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Transcript of 11-Nov-06 ILCSC - Valencia Global Design Effort 1 GDE Report and Discussion of Costs Barry Barish...
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 2nd 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 July Dec 2006
Freeze ConfigurationOrganize for RDR
Bangalore
Review Design/Cost Methodology
Review InitialDesign / Cost Review Final
Design / CostRDR Document
Design and Costing PreliminaryRDR
Released
Frascati Vancouver Valencia
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
percentage of total materials cost for USLCTOS 500 GeV Cold optionthese percentages for USLCTOS are somewhat sensitive,they are listed just to give idea of level of detail that has been attained
WB_6feb_PG_8feb (Follows USLCTOS) This is what is on the web, the items 1.8.3.1.1.i1.8.3 Cryogenic Plant and Distribution were omitted. The green numbers on left are
4.08 1.8.3.1 Cryogenic Plants percentage 4.08% of total USLCTOS 500 cold M&S3.27 1.8.3.1.1 Cryo Refrigeration Unit (includes cryo distribution, but not civil utilities)
This layer was not included - consider adding this layer to increase sensitivity1.12 1.8.3.1.1.1 Cryo Cold Boxes0.68 1.8.3.1.1.2 Cryo Warm Compressor System0.12 1.8.3.1.1.3 Cryo Cold Compressor System0.11 1.8.3.1.1.4 Cryo Purification System0.13 1.8.3.1.1.5 Cryo Refrigeration System Controls0.10 1.8.3.1.1.6 Cryo Liquid Helium Storage0.17 1.8.3.1.1.7 Cryo Vertical Transfer Line0.16 1.8.3.1.1.8 Cryo Distribution Boxes 1,2,80.11 1.8.3.1.1.9 Cryo Distribution Boxes 3,6,70.16 1.8.3.1.1.10 Cryo Warm He Gas Header0.09 1.8.3.1.1.11 Cryo Vacuum Barriers0.19 1.8.3.1.1.12 Cryo System Installation Contracts0.04 1.8.3.1.1.13 Cryo Miscellaneous0.05 1.8.3.1.1.14 Cryo Feed Boxes0.04 1.8.3.1.1.15 Cryo End Boxes
0.25 1.8.3.1.2 Cryo Cooling Towers0.04 1.8.3.1.3 Cryo Warm Helium Storage0.04 1.8.3.1.4 Cryo Helium Gas (initial charge) - should this be operating, not construction?0.00 1.8.3.1.5 Cryo Vacuum Barrier0.01 1.8.3.1.6 Cryo Feed Boxes0.01 1.8.3.1.7 Cryo End Boxes0.17 1.8.3.1.8 Cryo Load Controls0.30 1.8.3.1.9 Cryo Cold Bypass (1 kilometer) - what was this? fairly pricey!
1.8.3.2 Cryogenic Distribution - actually included above 1.8.3.1.1.i - so can discard this element
%
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 SystemsCommissioning, Operations & Reliability
Control System
Cryogenics
CF&S
Installation
Area Systems
e- e+ damping RTML main BDSsource source rings linac
Cost Roll-ups
11-Nov-06 ILCSC - Valencia Global Design Effort 8
System July 18, 2006 - Cost Estimates received for Regionaldescription common e- e+ DR RTML ML BDS Exp Am Asia Eure- Source √e+ Source √DR √RTML √Main LinacBDS √Com, Op, ReliabControl System √ √ √ √ √ √ √Cryogenics √ √ √ * √ √ √ *Convent. Facilities √ √ √ √ √ √ √ * √ √ √ √Installation √ √ √ √ √ √ √Instrumentation √ √ √ √ √ √ √Cavities √ √ √Cryomodules √ √ √ √ √ √ √RF √ √ √ √ √ √ √ √ √Magnets & PS √ * √ *Dumps & Collim √ √ √ √ √Vacuum √ √ √ √ √ √Accel Phys
√ = complete, √ * = almost complete, missing something minor
Vancouver Cost Data
11-Nov-06 ILCSC - Valencia Global Design Effort 9
ILC Estimate by Area Systems -17july06
Main Linac DRs Beam Deliv RTML e+ Source Exp. Halls e- Source General
Costs by Area System
11-Nov-06 ILCSC - Valencia Global Design Effort 10
ILC Estimate by Technical & Global Systems - 22july06
Conventional Facilities
Dumps & Collimators
CM & Cavities
Instrumentation
RF
Vacuum
Installation
Magnets
Cryogenics
Controls
Costs by Technical & Global System
11-Nov-06 ILCSC - Valencia Global Design Effort 11
Vancouver Valencia
CostReduction
Design Scope
Component Costs
Physics ScopeNo big ticket items!
Just lots of 1% effects
11-Nov-06 ILCSC - Valencia Global Design Effort 12
Design Changes Under Consideration
RDR MB CCB
214mr 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 9mm z) 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 in 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 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 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
Total cost
1.000
0.3680.316 0.316
0
0.2
0.4
0.6
0.8
1
1.2
Total Common add for IR A add for IR B
a.u.
Updates from CF&SMagnets 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
http://www-project.slac.stanford.edu/ilc/acceldev/beamdelivery/rdr/docs/push-pull/
11-Nov-06 ILCSC - Valencia Global Design Effort 22
Reduced # Bunches
Impact of ILC operation with a reduced number of bunches
IntroductionAs 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 ScenarioFull rf system
year peak L avail % peak lum/yr int lum
1 2.00E+33 10% 80% 3.57E+39 3.57E+39
2 6.00E+33 30% 80% 3.22E+40 3.57E+40
3 1.30E+34 70% 80% 1.63E+41 1.98E+41
4 2.00E+34 80% 80% 2.86E+41 4.84E+41
Half rf system
year peak L avail % peak lum/yr int lum
1 2.00E+33 10% 80% 3.57E+39 3.57E+39
2 6.00E+33 30% 80% 3.22E+40 3.57E+40
3 1.00E+34 70% 80% 1.25E+41 1.61E+41
4 1.10E+34 80% 80% 1.57E+41 3.18E+41
5 1.20E+34 80% 80% 1.72E+41 4.90E+41
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, 2nd 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%!
05
10
152025
initia
l
BDS
14/1
4 + m
uon
1 e+ r
ing
ML RF
DR 9m
m +
e+ so
urce
RTML
CF&S
Sha
fts+
Centrariz
ed D
R
BDS
1IR
Cooli
ng+M
isc
Energy
?
Lumino
sity?
%
Accumulated Cost Savings Each Cost Savings
11-Nov-06 ILCSC - Valencia Global Design Effort 27
Plans until Beijing (Feb. '07)
November December January February
Valencia
Further cost consolidationCCR 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 1st drafts
2006 2007
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
S0High-Gradient Cavities
S1High-Gradient Cryomodule
S2Test Linac
S3Damping Ring
S4Beam 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
S0High-Gradient Cavities
S1High-Gradient Cryomodule
S2Test Linac
S3Damping Ring
S4Beam Delivery
S5…SnH. 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?