1Albrecht Wagner, Sep 06

Sino-German Workshop

Frontiers in QCD

20-23 September 2006at DESY

Albrecht Wagner

2Albrecht Wagner, Sep 06

3Albrecht Wagner, Sep 06

Frontiers in QCD

This meeting is a follow-up to a workshop "QCD at High Energies/ Frontiers in QCD", Beijing September 2004

Both meeting are sponsored by Sino-German Center for Science Promotion (jointly founded by the National Natural Science Foundation of China (NSFC) and the German Research Foundation (DFG))

Meetings want to promote exchange and cooperation between Chinese and German scientists:several of Chinese participants have had prolonged stays in Germany, many of whom at DESY/Univ. Hamburg

4Albrecht Wagner, Sep 06

Deutsches Elektronen-SynchrotronMember of the Helmholtz Association

Mission: Development, construction, operation and scientific exploitation of accelerators

Provide access for national and international users

Internationally used, nationally funded Research Institute

Base-Budget: 165 MEuro (2005)

Staff: 1560 in Hamburg and Zeuthen

Users: 3000 (1500 from abroad)

Programme oriented funding:Five year programme planning, strategic review -> funding

5Albrecht Wagner, Sep 06

DESY

• DESY has a long successful history in three areas of basic science and high tech :

– Particle physics (one of 5 laboratories world wide),

– Research with X-rays (synchrotron radiation) and

– Accelerator development.

• These topics stimulate each other and constitute the basis for the future of the laboratory.

accelerator development

Photon researchSR & FEL

Exp. & Theor. Particle physics

6Albrecht Wagner, Sep 06

DESY’s Accelerators

HERA built with major contributions from Italy, France, Poland, China etc.

DESY operates today 16 km of accelerators for:

- Particle physics

- photon science

7Albrecht Wagner, Sep 06

QCD and DESY

DESY (together with the University of Hamburg) has a strong and long track record in QCD:

Gluon discovery early studies of QCD in e+e- (e.g. string fragmentation) at PETRAHERA (many aspects of QCD)Theory (Hamburg and Zeuthen)Lattice QCD

Future:Working on : LHC (will base in many respects on results from HERA)ILC

8Albrecht Wagner, Sep 06

How Strong is the Strong Interaction?

003.01186.0 s

Unification??

s(MZ) = 0.1186 0.0011 (exp.) 0.0050 (th.)

s is derived from structure functions and other measurements

9Albrecht Wagner, Sep 06

The Inner Structure of the Proton

A measure of the density of quarks and gluons in the proton is provided by the Structure Function

Knowledge of SFs is of vital importance for LHC physics

10Albrecht Wagner, Sep 06

Collaboration with China

Chinese Institutes engaged at DESY since 1978 • Particle PhysicsPETRA: IHEP (Beijing) in experiment MARK J (Prof. Ting).HERA accelerator:

Chinese Institutes strongly involved in construction of HERA accelerator (~30 persons present at DESY)

HERA-B-Experiment:Institute of High Energy Physics (Beijing)Tsinghua University (Beijing)

HERMES-ExperimentPeking University (Beijing)University of Science and Technology of China (Hefei)

TESLAPeking University (Beijing)Institute of High Energy Physics (Beijing)Tsinghua University (Beijing)

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China in the Tesla Technology Collaboration

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China and The European XFEL Project

•Presently: Preparatory phase (scientific/technical & admin./financial)

•13 countries have signed Memorandum of Understanding for this preparatory phase

•Bilateral discussions about concrete participation have started

13Albrecht Wagner, Sep 06

Summary

• Welcome to Germany and DESY

• Pleased to have you here,

– where a strong Sino-German collaboration has flourished for many years

– Where QCD has been and will be studied in many respects

I wish you and the Sino-German workshop an exciting week