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Global Design Effort 1
Barry BarishPAC Meeting
University of Oregon 11-Nov-10
GDE Director’s Report
Grooved Insert forCesrTA Wiggler
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Global Design Effort 2
Outline
• Status of R&D and design
• Plans through 2012– Technical Design Report– Implementation Plan
• Future beyond 2012
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Global Design Effort 3
Our Plan --- Updated “Living” Document
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Global Design Effort 4
R & D Plan Resource Table
• Resource total: 2009-2012
• Not directly included:– Other Project-specific, general infrastructure or
generic R&D resources overlap with ILC R&D
FTE SCRF CFS & Global AS TotalAmericas 243 28 121 392Asia 82 9 51 142Europe 108 17 64 189
433 55 236 724
MS (K$) SCRF CFS & Global AS TotalAmericas 18080 2993 6053 27126Asia 23260 171 5260 28691Europe 9890 921 530 11341Total 51231 4085 11843 67158
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Global Design Effort 5
R&D Progress
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Global Design Effort 6Global Design Effort
Major R&D Goals for Technical Design
SCRF• High Gradient R&D - globally coordinated program to
demonstrate gradient by 2010 with 50%yield; improve yield to 90% by TDR (end 2012)
• Manufacturing: plug compatible design; industrialization, etc• Future systems tests: NML (FNAL), STF2 (KEK)
Test Facilities• ATF2 - Fast Kicker tests and Final Focus design/performance• CesrTA - Electron Cloud tests to establish damping ring
parameters/design and electron cloud mitigation strategy• FLASH – Study performance using ILC-like beam and
cryomodule
M Ross for details
A Yamamoto for details
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Global Design Effort 7
SCRF Status/Progress
A Yamamoto for details
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Global Design Effort 8
The ILC SCRF Cavity
- Achieve high gradient (35MV/m); develop multiple vendors; make cost effective, etc
- Focus is on high gradient; production yields; cryogenic losses; radiation; system performance
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Global Design Effort 9
Creation of a Global Database
• Global Data Base Team formed:– Camille Ginsburg (Fermilab) – Rongli Geng (JLab) – Zack Conway (Cornell University)– Sebastian Aderhold (DESY)– Yasuchika Yamamoto (KEK)
• Activities – July 2009:
- Determine DESY-DB to be viable option, – Sept., 2009: (ALCPG/GDE)
- Dataset, web-based, support by FNAL/DESY,– Dec., 2009:
- 1st update of the yield statistics– March, 2010
- 2nd update- July, 2010
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Global Plan for SRF R&D
Year 07
2008 2009 2010 2011 2012
Phase TDP-1 TDP-2
Cavity Gradient in v. test
to reach 35 MV/m Yield 50%
Yield 90%
Cavity-string to reach 31.5 MV/m, with one-cryomodule
Global effort for string assembly and test
(DESY, FNAL, INFN, KEK)
System Test with beam
acceleration
FLASH (DESY) , NML (FNAL)
STF2 (KEK, test start in 2013)
Preparation for Industrialization
Production Technology R&D
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Global Design Effort 11
Cavity Gradient Milestone Achieved
2010Milestone
TDRGoal
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Global Design Effort 12
S1-Global Cryomodule Test in ProgressDESY, FNAL, IHEP, INFN, KEK, SLAC Cooperation
Vertical cavity test • CW low power test reached: < 30 MV/m >
S1-Global cryomodule • 1ms, 5 Hz pulse Individual test reaching: < 28 MV/m >
{as of Oct. 22, 2010}
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NML Cryomodule
NML CM1 cryomodule (Fermilab, DESY, INFN).
Closed and cool down is imminent.
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Global Design Effort 14
Test Facilities: FLASH
M Ross for details
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Global Design Effort 15
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Global Design Effort 16
Energy stability over 8hrs(3mA, 800us bunch trains)
Beam Energy
RF Vector Sums (Normalized)
Time (hrs)
2MeV(0.25%)
0.2%
844 MeV
Nominal
8 hrs
Time (hrs)
Tuning change (Spec: +/-0.1%)
16
J. Carwardine
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Test Facilities: ATF-2
M Ross for details
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Global Design Effort 18
ATF2 – Beam size/stability and kicker tests
IP Shintake Monitor
Final Doublet
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Global Design Effort 19
ATF2 (KEK) Status/PlansT. Tauchi
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Test Facilities: Cesr-TA eCloud
M Ross for details
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Global Design Effort 21
• Mitigating Electron Cloud
• Simulations – electrodes; coating and/or grooving vacuum pipe• Demonstration at CESR critical tests
eCloud R&D
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Mitigation - Simulation Studies
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Global Design Effort 23
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CesrTA - Wiggler Observations
IWLC2010 - CERN, Geneva, Switzerland
0.002”radiusElectrode best performance
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CESRTA - eCloud
• Mitigation performance:– Grooves are effective in dipole/wiggler fields, but challenging to make when size is
small– Amorphous C, TiN and NEG show similar levels of EC suppression so each is a
potential candidate for DR use• TiN and a-C have worse dP/dI than Al chambers at our present level of processing
• In regions where TiN-coated chambers are struck by wiggler radiation (high intensity and high Ec), we observe significant concentrations of N in the vacuum system
– EC suppression with the clearing electrode in the wiggler is significantly better than other options
• No heating issues have been observed with the wiggler design in either CESRTA or CHESS operating conditions
– Work is in progress to take RFA measurements in chambers with mitigations and convert these to the effective SEY of the chamber surfaces
• Agreement between data and simulation looks very promising
• Magnetic field region model requires full inclusion of RFA in simulation
– Trapping and build-up of the EC over multiple turns in quadrupole and wiggler chambers
• Simulation and experimental evidence
• Further evaluation of impact on the beam is required
M Palmer
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Global Design Effort 26
Design Update
Global Design and Decision Making
(SB2009)
N Walker for details
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Why change from RDR design?
• Timescale of ILC demands we continually update the technologies and evolve the design to be prepared to build the most forward looking machine at the time of construction.
• Our next big milestone – the technical design (TDR) at end of 2012 should be as much as possible a “construction project ready” design with crucial R&D demonstrations complete and design optimised for performance to cost to risk.
• Cost containment vs RDR costs is a crucial element. (Must identify costs savings that will compensate cost growth)
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Proposed Baseline Changes for TDR
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Proposed Design changes for TDR
RDR SB2009 • Single Tunnel for main linac
•Move positron source to end of linac ***
• Reduce number of bunches factor of two (lower power) **
• Reduce size of damping rings (3.2km)
• Integrate central region
•Single stage bunch compressor
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Top Level Change Control Themes
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Top Level Change Control Process
keywords: open, transparent
31
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TLCC Process
When Where What
BAW 1 Sept. 7-10, 2010
KEK 1. Accelerating Gradient2. Single Tunnel (HLRF)
BAW 2 Jan 18-21, 2011
SLAC 3. Reduced RF 4. e+ source location
Baseline Assessment Workshops• Face to face meetings• Open to all
stakeholders• Plenary
Physics and detector input / representation mandatory
Physics and detector input / representation mandatory
Walker
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Formal Director Approval• Change evaluation
panel• Chaired by Director
TLCC Process• Final formal step (recommended by
AAP)
• Change Evaluation Panel– Chaired by director– Experts to evaluate impact on
performance, cost, schedule, risk
– F. Asiri, K. Buesser, J. Gao, P. Garbincius, T. Himel, K. Yokoya
• Decision by Director– Accepts – becomes baseline;
guidance in decision memo– Rejects – sent back for further
work with comments33
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Proposals Received
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• Critical technical challenge for one-tunnel option is the high level RF distribution.
• Two proposed solutions :
– Distributed RF Source (DRFS)• Small 750kW klystrons/modulators in tunnel• One klystron per four cavities• ~1880 klystrons per linac• Challenge is cost and reliability
– Klystron Cluster Scheme (KCS)• RDR-like 10 MW Klystrons/modulators on surface• Surface building & shafts every ~2 km• Challenge is novel high-powered RF components
(needs R&D)
– Backup: RDR-like single tunnel HLRF
35
Single TunnelHigh-Level RF Solution
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Distributed RF – Single Tunnel
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Klystron Cluster – Single Tunnel
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RDR-type RF – Single Tunnel
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Global Design Effort 39Global Design Effort 39
TLCC Process
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TLCC Process
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Plans through 2012--------------
Technical Design Report (TDR)
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Five Themes to Develop
>2012
Remains
special
case
Project Implementation
Plan
Industrialisation
in-kind contribution
models
Site requirements
Project Schedule
Remaining Technical activities
N Walker
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Global Design Effort 43
Technical Design Phase and Beyond
AD&I studies
2009 2010
RDR ACD concepts
R&D Demonstrations
TDP Baseline Technical Design
2011 2012 2013
RDR Baseline
Be
ijing
Wo
rks
ho
p
TDR
TDP-1 TDP-2ChangeRequest
SB2009 evolve
change control processAAPPACPhysics
CE
RN
Wo
rks
ho
p
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Global Design Effort 44
• Timescale: Produce final reports end of 2012– Technical Design (TDR)– Project Implementation (PIP)
• First goal: Technical Design (TDR)– SCRF – S0 gradient; S1 Global Tests continue past 2012– Detailed technical design studies from new baseline – Updated VALUE estimate and schedule. – Remaining critical R&D and technology demonstration
(CesrTA complete; ATF-2; FLASH; etc)
• Second Goal: Project Implementation Plan (PIP)– Studies of governance; siting solicitation and site
preparations; manufacturing; etc
Technical Design Phase 2
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Essential Elements of TDP
• Optimize the design for cost / performance / risk– Top down approach got SB2009; value engineering; risk
mitigation
• Key Supporting R&D Program (priorities)– High Gradient R&D - globally coordinated program to
demonstrate gradient for TDR by 2010 with 90%yield– Electron Cloud Mitigation – Electron Cloud tests at Cornell
to establish mitigation; determine mitigtion plan; verify one damping ring is sufficient and size.
– Final Beam Optics – Tests at ATF-2 at KEK
• GOAL – Bring us ready to propose a solid and defendable “construction project” to world’s governments any time after 2012
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Project Implementation Plan
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Governance – Interim Reportpresented to FALC& ILCSC and at IWLC10
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Governance – Interim Reportexample – approach to “in-kind” contributions
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Presently – Outline Stage
Recent GDE Executive CommitteeMeeting during IWLC10
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(Global) Mass Production (SCRF)
• Critically important TDP2 activity
• Learn from XFEL experience• 5% ILC
• Learn from LHC experience
• Develop realistic models on which to base cost estimate
• With industry
TLCC-1
Global S1TDP-2
PIPGovernance
Akira
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19m x 14m ISO class-5 clean room
Chemical Polish room
KEK Industrial R&D Pilot Plant
Press machine
Triming machine
Electron Beam Welder
work together with industry to develop cost-effective cavity production techniques
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ILC: Future after 2012
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Why TDR in 2012 ?
• The R&D program is effectively ballistic at this point and slowing it down is not cost effective.
• Synergy with the CLIC CDR (in 2011).
• Available for the European Strategy for Particle Physics (2012) consideration.
• Ready on a time scale consistent with the first LHC physics results.
• TDR can serves as a basis for value engineering and industrial tech transfer programs.
• Project Implementation Plan available for potential hosts
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CY
Technical Design Report completeBaseline established
2011 2012 2013 2014 20162010
ILC
2015
Technical design & R&D program
2017 2018
ILC possible timeline
SRF system tests
TDR reviews
Site EOI’s
Cost Estimating
Decision to proceed
Site/host established
Project Implementation Plan complete XFEL operation
LHC
Physics Run 1 Physics Run 2Interconnect repair
Existence of low-lying SUSY known
Higgs energy scale known
timegap
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Global Design Effort 57
CY
Technical Design Report completeBaseline established
2011 2012 2013 2014 20162010
ILC
2015
Technical design & R&D program
2017 2018
ILC possible timeline
SRF system tests
TDR reviews
Site EOI’s
Cost Estimating
Decision to proceed
Site/host established
Project Implementation Plan complete XFEL operation
LHC
Physics Run 1 Physics Run 2Interconnect repair
Existence of low-lying SUSY known
Higgs energy scale known
timegap
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Pre-project ILC Organization
• GDE will have successfully completed its mandate after TDR + reviews (mid-2013 at latest)
• ILCSC / ICFA considering transition organization
http://cpdg.kek.jp (cpdg username and password).
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GDE - Technically-driven post 2012 program
• SCRF Systems tests; Mass production; Value Engineering, etc.
• Design evolution: 1 TeV; Positrons; R&D toward major technical advances
• Must preserve GDE-like global decision making and coordination in new pre-project organization
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From Technical Design Report to ILC(or beyond 2012)
• Steps to a Project – Technical (2-3 years)– R&D for Risk Reduction and Technology Improvement– Engineering Design– Industrialization
• Project Implementation– Government Agreements for International Partnership– Siting and site dependent design– Governance
• Time to Construct– 5-6 years construction– 2 years commissioning
• Project Proposal / Decision keyed to LHC results
• ILC Could be doing physics by early to mid- 2020s
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Possible GDE program - post 2012Possible GDE program - post 2012
• As the TDR phase and the associated R&D program concludes then the technical elements of the program will be de-emphasized (CESR TA, electron source, HLRF, LLRF, cryomodule design, BDS design etc…….).
• We will switch to operating the systems test facilities that were fabricated as part of the R&D program e.g. NML, STF. The Fermilab SRF string test will be commissioned in 2012 but the regular facility operations will not start until FY13. XFEL commissioning can be considered a large ILC system test of sorts.
• We will continue to support beam delivery system development at the KEK test beam facility (ATF2). This of course is contingent on KEK deciding to continue to support ATF program past the currently approved JFY12.
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Possible GDE program - post 2012
• We will support a core team to maintain corporate knowledge and be available for TDR reviews
• We plan to keep the SRF industrial base active at a minimally useful level and engaged in pre-production (value) engineering.
• It’s likely that positron production will benefit from R&D past 2012.
• It is likely that machine-detector interface activities will need to continue. This will help to facilitate the detector program.
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Final Remarks
• ILC accelerator R&D and design evolution is on track for Technical Design Report at end of 2012. This will be accompanied a Project Implementation Plan
• We are broadly collaborating with CLIC, which should enable an informed decision in the future
• Planning for ILC development beyond 2012 is very important. It will be very difficult to maintain viable support until a decision will be made.
• LHC will open the TeV energy frontier and the resulting physics will point our way to the future of HEP.