Memories - 1

Meeting of the

European Global Design Effort

TESLA Technology Collaboration

Carlo PaganiUniversity of Milano and INFN

Oxford, 25 October 2005

EGDE MeetingOxford, 25 October 2005Carlo Pagani 2

Memories - 1

July 1990: 1st TESLA Workshop at CornellConveners: 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 DESYBiörn 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


Memories - 2

May 1996: First Beam at TTFOne 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-TRCThe ILC-TRC states that the TESLA Technology is already mature to built a 500 GeV electron-positron collider

20 August 2004: ITRP recommends “Cold”


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.

………


International Collaboration to:

Establish the technological base for a cost effective Superconducting Linear Collider (and future SC accelerators)

Support an R&D 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


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

> 100 Million DM Invested on the TESLA SRF Technology


The Infrastructure


laser driven electron

gun

photon beam

diagnostics

undulatorbunch

compressor

superconducting accelerator modules

pre-accelerator

e- beam diagnostics

e- beam diagnostics

240 MeV 120 MeV 16 MeV 4 MeV

The TESLA Test Facility – TTF


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


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.


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 2005SLAC and KEK are among the new members

ORNL and LANL are willing to become members


1st TTC Meeting at DESY on April 2005

Three presentations to summarize TESLA technology related R&D activities and plans in the US, Europe and Japan.

Industrialization as a recurrent theme (special plenary on Thursday)

Three Working Groups WG-1: R&D 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 20052nd ILC Workshop (mainly WG 5), Snowmass, August 20051st SMTF Meeting, Fermilab, October 2005CARE/JRA1 Annual Meeting, Legnaro, October 2005


2nd TTC Meeting at LNF on Dec 2005

WG-1: Preparation of SC cavitiesWG-2: Technical Specification for InfrastructuresWG-3: Module Test Stands


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)


Global SCRF Test Facilities for ILC

TESLA Test Facility (TTF II) @ DESYTTF II is currently unique in the worldVUV-FEL user facilitytest-bed for both XFEL & ILCCryomodule Test Stand under construction

SMTF @ FNALUS Labs: Cornell, JLab, ANL, FNAL, LBNL, LANL, MIT,MSU, SNS, UPenn, NIU, BNL, SLAC + DESY-INFN-KEKTest Facility for ILC, Proton Driver, RIA (and more)

STF @ KEKaggressive schedule to produce high-gradient(45MV/m) cavities / cryomodules – ILC DedicatedInternational collaborations are welcome


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?


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


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?

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Memories - 1