1. Free-Electron Laser at the TESLA Test Facility More than 50 institutes from 12 countries are involved in the TESLA Project The TESLA Collaboration: Three directions of the TESLA project: Linear collider TESLA TESLA XFEL TESLA Test Facility TESLA AND X-RAY FREE ELECTRON LASER JINR – BMBF

2. Free-Electron Laser at the TESLA Test Facility The TESLA Test Facility at DESY, Phase I undulator bunch compressor rf-gun FEL beam TTF FEL: 80-180 nm, 1.5 GW, 40 fs

3. Free-Electron Laser at the TESLA Test Facility

4. First lasing 200020012002 2003 Free-Electron Laser at the TESLA Test Facility SATURATION The TESLA Test Facility at DESY: Phase II 6-120 nm & upgrade for the seeding option

5. TESLA and X-ray Free Electron Laser (Project TESLA) Scientific Programme: General objectives of the project are: participation in the development of the project of linear collider TESLA, construction of X-ray free electron laser (XFEL), and construction and operation of an VUV/X-ray free electron laser at the TESLA Test Facility (TTF FEL) at DESY. Expected main results: Construction of diagnostic system for short electron bunches using far infrared coherent radiation from an undulator; Construction of photon beam diagnostic unit and characterization of X-ray radiation from X-ray FEL at TTF FEL; Conceptual design of pump-probe FEL facility based on two-color FEL amplifier; Design and manufacturing of undulators and wigglers for PETRA and TESLA; Theoretical work on FEL and beam physics; Development of diagnostics of cryogenic systems and semiconductor cryodetectors. 1994 – 2003 – experts from LPP Science 2004 – experts from LPP, LHE and LNP Free-Electron Laser at the TESLA Test Facility Theme 02-0-1057-2004/2006 – LPP, LHE, LNP

6. Free-Electron Laser at the TESLA Test Facility ASTRA (DESY) - space charge dominated electron beams elegant (Argonne Natl. Lab.) - electron beam tracking in BC (including CSR) FAST (DESY/JINR) - simulation of SASE FEL ASTRAelegantFAST „Full physics“ start-to-end beam dynamics and FEL simulations ASTRA undulator bunch compressor FEL radiation rf-gun More than 300 papers were presented by JINR experts In 2000 M. Yurkov, E. Saldin, E. Shneidmiller were awarded with the Bjoern Wiik prize

7. Project TESLA in 2004 Preparation of photon diagnostics for VUV FEL at DESY. JINR manufactured control electronics for MCP radiation detectors and performed its commissioning at the TESLA Test Facility. Design and manufacturing of a prototype of permanent magnet quadrupole for XFEL and linear collider. Calculation and optimization of magnetic structure of undulators for XFEL. Design of an infrared beamline for electron bunch length monitor based on coherent infrared radiator. A prototype of a collimator with iris diaphragm has been manufactured by JINR and tested at DESY. Studies of beam physics related to production of intensive, low-emittance bunches for X-ray FEL. Development of elements for cryodiagnostcs for XFEL accelerator. 38 published papers (18 in refereed journals) 2004. D. Trines, E. Syresin, M. Yurkov E. Matyushevsky, Yu. Filippov Mounting of MCP detector at TTFMounting of mirror chamber at TTF

8. Very important Contribution From JINR Free-Electron Laser at the TESLA Test Facility

9. 15.12. 2004 23.44 Yurkov / Kocharyan

10. Free-Electron Laser at the TESLA Test Facility 14.01.2005 06:58 Kocharyan, Schneidmiller, Pugachov Excellent first results Electron beam energy - 450 MeV Photon wavelength – 30 nm Photon pulse energy - 1  J SASE gain - 10 5 FIRST LASING OF VUV FEL AT DESY

11. Optimization of magnetic structure of VUF FEL undulators Free-Electron Laser at the TESLA Test Facility Construction of permanent magnet quadrupoles for XFEL an linear collider LNP test bench with vibration wire for permanent magnet measurements

12. Expected results in 2005: Development of electron beam diagnostics based on detection of coherent synchrotron radiation. It is planned to manufacture at JINR non-standard mechanical components and front-end electronics for the detector. Manufacturing, mechanical test, and magnetic measurements of permanent magnet quadrupoles for future projects (XFEL and linear collider). Participation in the calculation and optimization of magnetic structure of undulators for XFEL. Conceptual design of electron beam diagnostics based on measurements of the radiation from optical FEL amplifier. Works on MCP-based radiation detector unit in part of upgrading front-end electronics and physics software. Theoretical and design studies in FEL physics and applications covering the following topics: FEL physics, optimization of user facility at the VUV FEL and X-ray FEL, FEL schemes providing femtosecond-scale pulse duration, and analysis of perspective industrial applications. Studies of beam physics related to production of intensive, low-emittance beams. Development of elements for cryodiagnostics for XFEL accelerator. Free-Electron Laser at the TESLA Test Facility