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Accelerator Vacuum Systems at DESY

Accelerator Vacuum Systems at DESY. M.Seidel, MVA OLAV Workshop, CERN, April 11, 2005. Overview DESY - Leptons. Overview DESY - Protons. TTF. DORIS. DESY II/III. LINACS. LINAC II e + /e -. DESY II (e +/- ), DESY III (p). DESY II chamber, d=0.3mm.

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Accelerator Vacuum Systems at DESY

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  1. Accelerator Vacuum Systems at DESY M.Seidel, MVA OLAV Workshop, CERN, April 11, 2005

  2. Overview DESY - Leptons

  3. Overview DESY - Protons

  4. TTF DORIS DESY II/III LINACS

  5. LINAC II e+/e-

  6. DESY II (e+/-), DESY III (p) DESY II chamber, d=0.3mm

  7. DORIS – Synchrotron Radiation Source outgoing wiggler beam

  8. PETRA II (e+/- 12GeV, p 40GeV)

  9. HERA (e+/- 27.5GeV, p 920GeV) proton ring (sc) electron ring

  10. TESLA TEST Facility – VUV FEL • Overall system • 360 m beam vacuum • 60 m cold (2 K), 3 sections • 300 m room temperature • 50 m coupler vacuum • 60 m isolation vacuum

  11. PETRA III Project • rebuild starting 7/07; HERA stops!; operation 09 • one octant with DBA cells, undulators, steel chambers and copper absorbers • 7 octants use old magnets with new coils, aluminum chambers • optimized for minimum emittance, maximum stability new PETRA III profile, aperture 40x80mm2, bend. radius 196m

  12. XFEL Project • sc. TESLA accel. structures (1.3GHz), about 1000 cavities • operation from 2012 • 1.5km cold vacuum, isolation vacuum, tot. 700m(!) undulator, >1km beam distribution, particle free preparation • challenging: undulator vacuum – small gap, resistivity, roughness… collimator section – has to withstand mis-steered beam roughness spectrum dimension of undulator beam tube

  13. DESY Vacuum Expertise • cold vacuum systems (HERA-p, TTF) • copper brazing technology (HERA-e, ..) • particle free preparation (TTF, XFEL ..) • S-Band Lin. Acc. → inductive brazing, precision machining of cups • RF guns, Nb e-beam welding, custom sputtering, NEG pumped systems, operation of large systems etc…

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