Accelerator Advisory Committee Review AAC

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Accelerator Advisory Committee Review (AAC)
SMTF Proposal and Collaboration Overview

• Fermilab
• May10-12th, 2005
• Helen Edwards and Nigel Lockyer
• Co-Spokespersons

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Superconducting RF Module Test Facility (SMTF)
at Fermilab
Goal Develop U.S. Capabilities in high gradient
and high Q superconducting accelerating
structures in support of the International Linear
Collider, Proton Driver, RIA, 4th Generation
Light Source and other accelerator projects of
interest to U.S and the world physics community.
1.3 GHz ILC Cryomodule
4 Accel Cavities
4 US Cavities
4 KEK Cavities
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Project Status

• ILC is assumed to begin construction in the range
  of 2010
• CDR to be complete with costs by end of 06
• Proton Driver is about to seek CD-0

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History of SMTF(1)

• One year ago Helen Edwards, Kwang-Je Kim, Hasan
  Padamsee and SCRF proponents organized a SMTF
  2nd meeting at Argonne (May 2004)
• Much has happened since then
• Prepared for Caltech ITRP meeting at end of June
  2004
• Fermilab states they will assume lead of cold
  technology in US
• SMTF collaboration theme was broad SCRF RD in
  many areas
• After ILC cold technology recommendation there
  was increased interest by Fermilab in moving
  ahead on ILC-SMTF EOI submitted in Fall 2004
• Visit DOE in December to make presentations to NP
  (Kovar) HEP (Staffin)
• DOE Fermilab interest up in PD after BTEV
  decision

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History of SMTF(2)

• SMTF proposal submitted to Fermilab in February
  2005
• GDE input is beginning- B. Barish asking for
  deliverables
• P.Oddone engaged in SMTF discussions-evaluating
  situation
• Evolving goals (SMTF remaining flexible)
• Setup process to allow us to make decisions to
  achieve goals (Technical Institutional Boards)
• Good support this year from Fermilab/DOE and
  collaborators
• Ramp up in resources needed

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SMTF Collaboration

• Collaborating Institutions (21) and their
  representatives
• Argonne National Laboratory Kwang-Je Kim
• Brookhaven National Laboratory Ilan Ben-Zvi
• Center of Advanced Technology, India Vinod Sahni
  
• Cornell University Hasan Padamsee
• DESY Deiter Trines
• Fermi National Accelerator Laboratory Robert
  Kephart
• INFN, Pisa Giorgio Bellettini
• INFN, Frascati Sergio Bertolucci
• INFN, Milano Carlo Pagani
• Illinois Institute of Technology Chris White
• KEK Nobu Toge
• Lawrence Berkeley National Laboratory John Byrd
• Los Alamos National Laboratory J. Patrick Kelley
  
• Massachusetts Institute of Technology Townsend
  Zwart
• Michigan State University Terry Grimm
• Northern Illinois University Court Bohn
• Oak Ridge National Laboratory Stuart Henderson

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International Collaboration

• SMTF functioning extremely well with
  international partners
• DESY Started detailed discussions on the next
  cryomodule design and we are beginning to
  collaborate on the LLRF (planning a workshop in
  the future devoted to this subject) and controls
• KEK Receiving 4 cavities for testing this year
  and discussing controls and LLRF and other areas
  of overlap
• (US-Japan Funds)
• INFN Cold mass
• India Growing interest
• DESY, INFN, KEK are represented on Technical
  Board

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Why Do we Need SMTF?

• Broad spectrum of world class expertise exists in
  SCRF in US, especially at JLAB, Cornell, SNS,
  Fermilab, Argonne, LANL
• Significant RD infrastructure in US but
  distributed and not of a scale needed for the
  list of new projects being discussed
• ILC is greater than an order of magnitude larger
  in scale than any other conceived SCRF project
• World leader in ILC cold technology, DESY, is
  beginning to focus on X-FEL (still a major ILC
  player)
• Japan is rapidly stepping up SCRF research
• Many RD problems must be solved before the new
  planned projects can move to costing and proposal
  stage
• SMTF will bring many more resources to bear on
  the identified problems in SCRF associated with
  ILC, PD, RIA, CW
• Industrialization is needed to build ILC and a
  major goal of SMTF is to move that process to
  point of readiness

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US Industrialization

• US industry lags Europe by several years
• US lags Japan in working with industries
• Presently 1 module/ 6 months in Europe
• Capacity about 1/6 weeks-cavities limiting factor
• Euro-XFEL calls for 1/week by 2009 (challenging)
  several companies now
• ILC will need about 2/day
• SMTF planning to host US Industrial Forum
• See talk by Warren Funk

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ContinuedWhy do we need SMTF?

• SMTF is bringing together the US and world
  experts to tackle the problems identified by TRC
• We are doing things better together that we
  cannot do separately eg. First US ILC
  cavities-collaboration of Cornell, AES, JLAB,
  Fermilab
• SMTF brings experts together discussing
  problems-even from different projects
• Technical Board of SMTF consists of members from
  each of 4 major project areas and international
  experts
• Other regional facilities
• TTF 30 for accelerator research (mostly for VUV
  user community)
• STF (KEK) in construction (dedicated similar
  to goals to SMTF )
• Synergy of SMTF is the common SCRF technology
• SMTF dedicated next generation regional SCRF RD
  facility with beam

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TTF/FEL Busy User Schedule 2005
TTF is focusing on VUV/FEL Studies User
Operation LLRF Development
TESLA Technology Collaboration TTF VUV/FEL
(Operation) XFEL (28 MV/m) ILC (35 MV/m)
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ILC SCRF RD Plan at KEK
New modulator
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Goals of SMTF

• SMTF is committed to solving many of the TRC
  R1-R4
• produce cavities with gt35 MV/m reliably
• System tests of linac building blocks with beam
• LLRF development system tests
• perform long term performance tests with beam
• Further develop US industrial cavity module
  capabilities
• Focus on cost reduction improvements
• PD RD on front end (ILC back end)-well matched
  RD
• PD and RIA need high power beam tests
• RIA and PD synergy significant
• CW seeks Qgt3E10 (with beam tests) compliments
  work elsewhere with high current tests
• Accelerator physics RD with photo-injector eg.
  Polarized beams with RF photocathodes (see talk
  by P. Piot)

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Proposed ILC Cryomodule Fabrication and Beam Test
at Schedule
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Summary of Motivations for SMTF

• Prepare to meet the needs for several ambitious
  SCRF accelerator projects being planned in the US
  
• Examples International Linear Collider
  FELs, Light sources, RIA, Proton Driver
• SMTF will enhance US Technical Base
• Enhance SCRF technology capability in US to meet
  these project needs
• Effectively use existing SCRF infrastructure
• Upgrade infrastructure at Fermilab and elsewhere
  to fill in existing gaps
• Take advantage of synergy between projects eg. PD
  ILC
• Overlap of national and international experts at
  one facility allows exchange of ideas and thus
  unifies and strengthens approach to SCRF
• SMTF will allow US to
• Pursue broadly advances in SCRF technology to
  meet extend science goals
• Learn to reduce cost of new projects by using
  most advanced SCRF methods
• Build cooperation with and transfer technology to
  US industry (lags world abilities)
• Develop industrial base with view toward
  production and cost reduction
• Collaborate compete effectively with Europe and
  Asia
• National collaboration from many fields of
  science that broaden ILC support

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SMTF Organization

• Two collaboration meetings thus far, one at JLAB
  and one at Fermilab, next at SNS
• Started bi-weekly video meetings to keep
  collaborating institutions informedwell
  attended-DESY and KEK report
• Good participation from SLAC
• Biweekly Fermilab steering committee meeting
• WEB pages beginning to take shape
• Institutional board elected- initial set of
  bylaws available
• Technical Board Chairnominations and election
  held recently- Chair is Hasan Padamsee from
  Cornell-initial bylaws outlined on task
• Members of TB next step-initial list discussed
• First TB meetings and agenda being discussed
• Co-spokespersons elected two weeks ago
• Good progress on this front-much more needed

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SMTF Organization Chart
FNAL
Institutional Board SMTF Co-Spokespersons One
Representative per Institution Project
Spokespersons Technical Board Chair
SMTF Co-Spokesperson Nigel Lockyer
Co-Spokesperson Helen Edwards
Fermilab Directorate Steve Holmes
Fermilab SMTF Steering Committee
Technical Advisory Board Chair Hasan Padamsee
RIA Ken Shepard Walter Hartung
ILC Shekhar Mishra Tor Raubenheimer
CW 4th Gen. Light Sources Electron-Ion
Colliders Electron Coolers John Corlett Lia
Merminga
Proton Driver Bill Foster
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FNAL SCRF Steering Committee Organization Chart
Laboratory Directorate
Associate Director for Accelerators
FNAL SCRF Steering Committee
S. Holmes, Chair H. Edwards, Deputy
SMTF Program
ILC Accelerator RD Program S. Mishra H. Carter
H. Edwards P. Limon P. Czarapata
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ILC-Fermilab Organization Chart
ILC-Americas
Accelerator Division R. Dixon H. Edwards
Directors office Steve Holmes
Technical Division R. Kephart
Particle Phy. Division J. Strait
ILC _at_ Fermilab Shekhar Mishra Harry Weerts
TD Budget/Admin Support
Computing Division V. White
Accelerator S. Mishra H. Carter
Computing G. P. Yeh
Site studies V. Kuchler
NI Collaboration S. Mishra
Physics S. Tkaczyk
Main Linac N. Solyak
Theory A. Kronfeld
Detector Simulation
Civil T. Lackowski
In-Reach N. Lockyer
SCRF
Damping Ring K. Kim
SM Fabrication H. Carter
Accelerator Simulation
SiD H. Weerts
Out-Reach H. Weerts
Geology V. Kuchler
Accelerator DAQ
SM Testing P. Limon P. Czarapata
Muon H. Fisk
Strategic Plan H. White
Injector P. Piot
ASIC S. Tkaczyk
Communication J. Jackson
MD Interface N. Mokhov
This is not a reporting organization chart.
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SCRF RD Engineering Organization
This is not a reporting organization chart.
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Summary Cost

• Details in H. Carter and R. Stanek talks
• RD program for the next 5 years (FY05-FY09)
• MSSWFGA30 contingency
• ILC infrastructure operations (IO) cost is
  108M
• ILC total cost (including components) is 145M
• PD (IO) cost is 26M
• PD total cost (including components) is 66M
• The total cost (ILCPD) is 210M
• The estimated FTE-years needed over ILC and PD is
  430200630 FTE-years (over 5 years)

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Summary

• SMTF is a timely and well motivated collaborative
  effort on SCRF
• Collaboration has now defined a structure for
  making decisions and moving forward
• Goals and deliverables are becoming more
  clear-still some evolution
• SMTF will establish the technical understanding
  for proceeding on SCRF linac components
• Increase involvement of community
• Need increased funding to meet ambitious goals

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Reference Slides

• The following slides are useful sometimes as a
  reference

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Tie ILC Goals to ILC-TRC Report

• From Chapter 9 of Summary
  of RD Work that Remains to Be Done for
  Individual Machines or Collectively for All
  Machines ILC-TRC/2003 Report
• Greg Loew (Chair) et al. http//www.slac.stanford.
  edu/xorg/ilc-trc/2002/2002/report/03rep.htm

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R1

• The feasibility demonstration of the TESLA energy
  upgrade to about 800 GeV requires that a
  cryomodule be assembled and tested at the design
  gradient of 35 MV/m. The test should prove that
  the quench rates and breakdowns, including
  couplers, are commensurate with the operational
  expectations. It should also show that dark
  currents at the design gradient are manageable,
  whcih means that several cavities should be
  assembled together in the cryomodule. Tests with
  electropolished cavities assembled in a
  cryomodule are foreseen in 2003.

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R2

• To finalize the design choices and evaluate
  reliability issues it is important to fully test
  the basic building blocks of the linac. For
  TESLA, this means several cryomodules installed
  in their future machine environment, with all
  auxiliaries running, like pumps, controls, etc.
  The test should as much as possible simulate
  realistic machine operating conditions, with the
  proposed klystron, power distribution system and
  with beam. The cavities must be equipped with
  their final HOM couplers, and their relative
  alignment must be shown to be within
  requirements. The cryomodules must be run at or
  above their nominal field for long enough periods
  to realistically evaluate their quench and
  breakdown rates.
• A sufficiently detailed prototype of the main
  linac module (girder or cryomodule with
  quadrupole) must be developed to provide
  information about on-girder sources of vibration.

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R3

• Improvements in the low level RF systems design
  is needed. The system is quite complicated and
  critical, with many functions (field control,
  feedback, piezo feedforward, interlocks, fault
  management) and requires very specialized
  expertise.
• There must be long-term testing of rf cryomodules
  to precisely evaluate weaknesses before large
  scale series production begins.
• long-term testing of multi-beam klystrons is
  required to quantify their lifetime and MTBF
• For the TESLA upgrade 800 GeV option, the
  capability of rf components (circulators, phase
  shifters etc) to handle a higher rf power must be
  demonstrated.
• Improvements (TESLA) of the source lasers are
  needed to improve its stability. beam klystrons
  is required to quantify their lifetime and MTBF
• The dark currents at the nominal operating field
  should be precisely evaluated.

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R4

• Understanding of gradient limits with
  electro-polished cavities is of great interest
  for TESLA, especially the 800 GeV upgrade.
  Studies must continue in this direction, in
  collaboration with other institutes and
  universities.
• Several alternatives or complementary solutions
  are proposed for the TESLA rf distribution
  system. They should be tested and evaluated in
  the long term.
• The study of polarized rf photcathode guns should
  be encouraged.

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