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ECFA/DESY Workshop, Prague, 15.11.2002

Status of the TESLA Proposal

R-D Heuer, Univ. Hamburg

and: International Detector R&D

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3

TESLA 500

Cavity performance

Accelerating gradientof all acceleratormodules assembled:

average gradient above TESLA 500needs of 23.4 MV/m

gradient spread ofindividual cavitiesdecreased

4

TESLA Test Facility at DESY

TTF operation for > 13,000 h

Technical readiness has been demonstrated

Greg Loew (ICFA Seminar 2002):

If one had to launch a project for 500 GeV TESLA would be the only one having essentiallyproven performance specs for the main linac RF-system

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TTF Operation forExperiments and Beam

Studies

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Cavity TreatmentElectropolishingof Cavities

Collaboration

CERN/KEK/

Saclay/DESY

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The path to 35 MV/m and 800 GeV

Now four 9-cell cavitiesabove 35 MV/m

Transition from single-cell results to multi-cell results again successful

Electropolishing of cavities:

Nine-cell cavities

35 (TESLA 800)

8

Side Planning Status

We prepare to start the legal procedure required for animplementation at the site in a few months, as part of the overall feasibility study

Agreement between the statesSchleswig-Holstein and Hamburgfor joint legal procedure

Environmental impact study complete

Research Campus Ellerhoop

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The German Science Council

(Wissenschaftsrat)

The Wissenschaftsrat (WR) advises the Federal Governmentand the state (Länder) governments. Its tasks are:

- Recommendations on the development of higher education institutions, science and the research sector - Considerations concerning quantitative and financial effects

The WR was asked in 2000 by the federal and state governments to review TESLA and 7 other proposals for large infrastructure facilities

Statement by the WR (July 2002) :http://www.wissenschaftsrat.de/texte/5385-02.pdf

Function

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Theses by the WR on the significance of large-scale facilities for basic scientific research

-Basic scientific research plays a key role in shaping the future worldwide-The opening-up or development of totally new areas of research is closely related to the availability of specific new facilities-Large-scale facilities must represent the distilled core of national and international research collaboration and scientific networks-One essential task to be fulfilled in the operation of large-scale facilities is that of linking high-ranking scientific research closely with the training of junior scientists and including them in international research collaboration-With large-scale facilities there must be long term scientific visions, and the prerequisites for technical innovations must be given-The facilities should be set up as research establishments organised under an umbrella of multinational European or international sponsorship and should be open to a broad international usership -Large-scale facilities must be centrally incorporated into the strategic planning and research programme of the institution(s) in charge and must be a core element of the spectrum of tasks

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WR-Statements concerning the X-FEL

The high luminosity and time resolution of the X-FEL promises anew quality of experiments for many areas of research in the natural, life, material and geo-sciences. Due to the high coherenceof the photon radiation it will be possible for the first time toextensively analyse the structural and dynamic properties ofmatter. …

… use of the TTF has led to key theoretical and experimental developments as well as sweeping technological innovations, a trendthat is expected to continue in the future.

The Science Council requests the Federal Government to give itsbinding consent to German participation in the TESLA X-FELproject as soon as possible after the revised project proposal hasbeen submitted

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The X-FEL

TDR:

Collider and FEL usejointly the first section of the SC linac

Following therecommendation by the WR, the planning is based on separate linac for X-FEL, usingsame technology

New proposal submitted for meetingof the WR this week

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WR-Statement concerning the LC

The Science Council believes that an enormous amount of knowledge about fundamental questions concerning the micro- and macrocosmoswill be gained from the scientific questions that will be examined usingthe TESLA linear collider.

… The general feasibility of superconducting accelerator technologywas convincingly demonstrated by the test accelerator (TTF) installedat DESY. …

The Science Council requests the Federal Government to give itsbinding consent to German participation in the project as soon aspossible after the project proposal has been submitted with specificdetails concerning international funding and international cooperation.

Memo concerning international cooperation submitted to WR meeting

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Next Steps

The statement is the final vote on each initiative

The WR regards the funding of facilities of this size as continuousprocess

Thus it considers the statement to be the basis for furthernecessary discussions on support

The WR will submit concrete recommendations on the priorities forimplementation, which are based on the present statement andwhich take into account the subsequent science policy debate onthe goals and funding of the facilities

Scientific recommendations in a few monthsPolitical decisions expected in 2003

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International Linear ColliderDetector R&D

Committee appointed to - describe the detector R&D required- list the R&D efforts presently ongoing- point out areas where efforts are missing or inadequately covered

Paper about the world-wide effort written, serving as a starting point.

Web-page created http://blueox.uoregon.edu/~lc/randd.htmlcontaining links to all subdetector areas

The purpose of this web-page is to help organise the R&D efforts more globally and to facilitate and foster interregional co-operations. Itcontinues from the paper, serving as a continuous update.

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International Linear Collider Detector R&D

1) Project Days

Facilitate and intensify international cooperation on subdetector R&D

Add one day to each of the next regional meetingsdedicated to specific subdetector R&Dwith Video/Phone conferencing to the other regions

Jan 08 2003 UTA Vertex and Intermediate Tracker European contact: C.DamerellMar 31 2003 NIKHEF Main and Forward Trackingsummer 2003 Asia Calorimeter and Muon

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International Linear Collider Detector R&D

2) Global Detector Network (GDN)

Idea of the Global Accelerator Network follows the exampleof the large detector collaborations

Idea of the Global Detector Network follows the example ofthe GAN: mirror control rooms off site and run experiment remotely

Need to discuss all aspects (technical feasibility, security, social…)related to remote running. Two Contact Persons per region (to be) nominated Europe: Joachim Mnich and Vaclav VrbaStart discussion Sunday during Detector Plenary session