EGDE Meeting

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Memories - 1

• July 1990 1st TESLA Workshop at Cornell
• Conveners Ugo Amaldi (CERN) Hasan Padamsee
  (Cornell)
• General consensus to setup an international
  Collaboration
• to study the cold option for the future
  electro-positron collider
• March 1991 1st Informal Meeting at DESY
• Biörn Wiik invites at DESY representative experts
  to propose DESY as the Hosting Laboratory for the
  envisaged TESLA Collaboration
• January 1992 1st TESLA Collaboration Board
  Meeting
• to discuss a draft version of the
  Interlaboratory MoU for the TESLA Collaboration
  to be signed by the interested Institutions
• December 1992 Decision for Infrastructure and
  TTF
• A Proposal to Construct and Test Prototype
  Superconducting RF Structures for Linear
  Colliders - TESLA Note 93-01

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Memories - 2

• May 1996 First Beam at TTF
• One 8 cavity module accelerates the electron beam
  at the unprecedented gradient of 15 MV/m
• March 2001 TESLA Technical Design Report
• A complete Technical Design Report is presented
  for the construction of a 500-800 GeV SC
  electron-positron collider, named TESLA
• February 2003 Green Light from the ILC-TRC
• The ILC-TRC states that the TESLA Technology is
  already mature to built a 500 GeV
  electron-positron collider
• 20 August 2004 ITRP recommends Cold

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From the Interlaboratory MoU

• Art. 1 Goal of the Collaboration
• It is the aim of this collaboration to establish
  the technological base needed to construct and
  operate a high energy electron-positron linear
  collider (or other accelerators) made of
  superconducting rf cavities and demonstrate that
  this collider can meet the performance goals in a
  cost effective manner. This program of TTF
  (TESLA Test facility) includes the construction
  of the infrastructures needed to produce high
  performance cavities and the construction and the
  operation of a test linac
• It is the intention of the collaboration to
  create the conceptual design report of an
  electron-positron linear collider facility
  covering the energy region up to 500 GeV or above
  with a luminosity of the order of 5.1033cm-2s-1.
  It is not the specific goal of this MoU to cover
  the effort needed to carry out this conceptual
  design.

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International Collaboration to

• Establish the technological base for a cost
  effective Superconducting Linear Collider (and
  future SC accelerators)
• Support an RD program carried out at DESY, TTF,
  setting up
• An infrastructure
• to develop the status of art for high field
  cavity fabrication, processing and assembly
• to understand and define all the critical steps
  needed to guaranty the production of a high field
  cavity
• to transfer to industry the fabrication process,
  while setting standards for the required quality
  control
• A test linac
• to develop and test cavity ancillaries,
  cryomodules and associated systems as RF,
  cryogenics, vacuum, etc.
• to create the culture for operation, controls and
  diagnostic,
• to test the limits in order to improve component
  and sub-system engineering
• to create a MTBF component database to focus
  details to be reviewed in view of the high
  reliability and availability required by the
  Linear Collider

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First 7 year balance (1992-98)

• Funding
• Major Contributing Countries (including personel)
• Germany (DESY ) 50
• France (CEA IN2P3) 10-15
• Italy (INFN) 10-15
• USA (Fermilab ) 10-15

• Design
• Major Contributing Institutes
• (in alphabetic order)
• CEA/IN2P3
• CERN
• DESY
• INFN
• Fermilab Cornell for USA

gt 100 Million DM Invested on the TESLA SRF
Technology
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The Infrastructure
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The TESLA Test Facility TTF
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TESLA Collaboration as in August 2004

• 53 Institutes in
• 12 Countries
• but
• DESY Mission now focussed on Advanced Light
  Sorces and related science
• TTF 2 becoming a VUV-FEL user facility
• TESLA Collaboration new Players focussed on FEL
  and CW
• Original strong members much less active

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New TESLA Collaboration Mission

• As from the TESLA Collaboration Board, Orsay,
  September 7, 2004
• The role of the collaboration is to advance SRF
  technology research and development and related
  accelerator aspects across the broad diversity of
  scientific applications, and to keep open and
  provide a bridge for communication and sharing of
  ideas, developments, and testing across
  projects.
• To this end TTF and module test stands will
  continue to be used as a test bed for new
  developments and experiments in SRF technology,
  beam and light physics, and associated
  developments such as instrumentation and
  diagnostics.
• The collaboration will support and encourage free
  and open exchange of knowledge, expertise,
  engineering designs, and equipment.

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Memorandum of Understanding

• The MoU of the TESLA Technology Collaboration,
  defines the mission, the organization, the role
  of the Collaboration and Technical Boards, the
  membership, intellectual property, and
  publication
• Institutions which were members of the TESLA
  collaboration will become members of the TESLA
  Technology Collaboration without further action
  by the CB. In view of the redefined mission of
  the Collaboration each Institution will be asked,
  however, whether it wants to remain member of the
  Collaboration. Each Institution will be asked to
  sign the MoU in the form of a bilateral agreement
  with DESY.
• New Institutions which desire to join the TESLA
  Technology Collaboration will present a proposal
  for their membership to the CB.
• Albrecht Wagner, 30 March 2005

SLAC and KEK are among the new members ORNL and
LANL are willing to become members
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1st TTC Meeting at DESY on April 2005

• Three presentations to summarize TESLA technology
  related RD activities and plans in the US,
  Europe and Japan.
• Industrialization as a recurrent theme (special
  plenary on Thursday)
• Three Working Groups
• WG-1 RD for high-quality large-scale cavity
  production
• WG-2 Next-generation cavity infrastructures
• WG-3 Auxiliaries module integration
• Most of the TTC discussion themes further
  developed at the
• 13th Workshop on RF Superconductivity, Cornell,
  July 2005
• 2nd ILC Workshop (mainly WG 5), Snowmass, August
  2005
• 1st SMTF Meeting, Fermilab, October 2005
• CARE/JRA1 Annual Meeting, Legnaro, October 2005

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2nd TTC Meeting at LNF on Dec 2005
WG-1 Preparation of SC cavities WG-2 Technical
Specification for Infrastructures WG-3 Module
Test Stands
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A few Comments

• The TESLA Technology Collaboration is an
  international/interregional instrument to
• Share information, experience, drawings and
  results
• Improve synergies between different projects
  based on the TESLA Technology pulsed and CW,
  electrons and protons
• Share TTF operation experience
• Can we expect more for ILC ? May be, but it must
  be created and we cannot expect DESY being the
  unique driving force (X-FEL).
• A few ideas for discussion
• Coordinate the Cold Technology effort for ILC
  in the three Regional Infrastructures and Test
  Facilities
• Define and support a new SRF Cavity
  Infrastructure for Europe (FP 7)

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Global SCRF Test Facilities for ILC

• TESLA Test Facility (TTF II) _at_ DESYTTF II is
  currently unique in the worldVUV-FEL user
  facilitytest-bed for both XFEL ILC
• Cryomodule Test Stand under construction
• SMTF _at_ FNALUS Labs Cornell, JLab, ANL, FNAL,
  LBNL, LANL, MIT,MSU, SNS, UPenn, NIU, BNL, SLAC
  DESY-INFN-KEK
• Test Facility for ILC, Proton Driver, RIA (and
  more)
• STF _at_ KEKaggressive schedule to produce
  high-gradient(45MV/m) cavities / cryomodules
  ILC Dedicated
• International collaborations are welcome

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Coordination of Regional Infrastructures?

• It would be very useful but it is not
  straightforward
• In that case we can imagine a more International
  Collaboration with a much les pronounced
  European role
• How the TESLA Technology Collaboration could
  coordinate effort and investments that are mostly
  national? It has to be proven. No funding is
  expected to flow through TTC
• What could be the foreseen connection between TTC
  and the other TTC supported project?
• What is the possible relation between TTC and GDE?

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TTC and FP7

• TTC could be used to prepare a request to EU for
  funding a new generation SRF Infrastructure in
  Europe
• This looks very attractive. TTF Infrastructure is
  old and X-FEL has strong priority. Nevertheless
  two conditions are required to recreate the
  momentum of the old TESLA
• A leading Lab/Institution willing to invest
  resources
• DESY, CERN, France, Italy, UK in the order
• Major European Institutions willing to invest
  consistent resources.
• As for SMTF and STF major non-European SRF Labs
  should contribute
• The definition and support of a modular
  infrastructure, designed to set QA, QC and
  parameters for reliable industrial production is
  conceivable. EU is supposed to be positive.
• 30 M 15 from EU, 7-8 from the hosting lab

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Concluding Remarks

• The cold technology chosen for the ILC has been
  developed in the framework of the TESLA
  Collaboration by the TESLA Collaboration Members.
  The European role has been dominant
• DESY, as hosting laboratory, gave the major
  contribution and retains most of the operation
  and system experience, but not all.
• Part of the TESLA Collaboration experience is
  contributing to the ILC through the EU Programs
  CARE, EUROTeV et al.
• TTF2 is a unique tool both for XFEL and ILC
  dvelopment. It is the major contribution of the
  TESLA Collaboration to these projcts.
• The TESLA Collaboration Mission has been slightly
  reviewed (Orsay, 8 Sep. 04) to better contribute
  to the several major projects, such as the XFEL
  or the ILC, which are based on the use of SRF
  technology
• TTC can be one of the tools being used to
  maintain an European leadership in the SRF
  Technology. But
• who is effectively working for that?