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Udo Blell GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract

Task number SIS18- 4. Injection upgrade. Udo Blell GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract "DIRAC-PHASE-1" for the FAIR project October 11, 2007. Udo Blell – FAIR Synchrotrons. The heavy ion synchrotron SIS 18. Injection septum. SIS 18.

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Udo Blell GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract

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  1. Task number SIS18- 4 Injection upgrade Udo Blell GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract "DIRAC-PHASE-1" for the FAIR project October 11, 2007 Udo Blell – FAIR Synchrotrons

  2. The heavy ion synchrotron SIS 18 Injection septum SIS 18 Inflector magnet UNILAC Experiments Extraction beam line Udo Blell – FAIR Synchrotrons

  3. Upgrade Motivation • Injection septum • Maximum injection energy of U28+ is presently 7.1 MeV/u • Standard energy is 11.4 MeV/u •  Increasing of the electrical field strength and •  increasing of the horizontal aperture • Currently the electrostatic septum is not protected against beam losses.  A scraper to protect the anode is necessary. • To minimize the losses while injection from transfer channel to SIS.  additional beam diagnostic is necessary Udo Blell – FAIR Synchrotrons

  4. Upgrade Motivation • Inflector magnet • The acceptance limitation is given by the present inflector magnet. • > The aperture must be increase • For the bake procedure currently we have to remove the coils from the beam pipe, to install the heating seal. • > The heating seal is permanently build in Udo Blell – FAIR Synchrotrons

  5. Main components of an e - septum Deflection unit Anode Cathode High voltage power supply Vacuumchamber Udo Blell – FAIR Synchrotrons

  6. Parameters of the e-septum Comparison of existing and new e-septum Udo Blell – FAIR Synchrotrons

  7. New septum design • Design goals: • Adjustable anode and cathode • 300 kV insulation • Back able up to 250 ° • Beam diagnostic (profile monitor) • Septum protection (scraper) Udo Blell – FAIR Synchrotrons

  8. New septum design Profile monitor Protection resistor Udo Blell – FAIR Synchrotrons

  9. Cooperation partner • Requirements : • Field strength 100 KV / cm • with the boundary condition >>> 250°C back able • > Cathode surface treatment necessary for an electron emission reduction • Cooperation with Institute of high current electronics in Tomsk (RU) • Pulsed electron beams melt the cathode surface • > The smoother surface reduce electron emission Udo Blell – FAIR Synchrotrons

  10. Costs electrostatic septum • Construction time GSI • Preliminary investigations and project analyses 110 h • 3D – construction 1900 h • Drawings 2D 100 h • Summary 2110 h • Manufacturing costs GSI and other companies • Material and manufacture 246.000€ • Assembly 261h / 60€ 15.660€ • Unexpected and additional work 50.200€ • Summary 311.860€ • Cathode Treatment • Fraunhofer Institut Elektronenstrahl- und Plasmatechnik 20.900€ • Institute of high current electronics in Tomsk (RU) 50.000€ • 300 KV power supply • Supplied by FUG and examined by GSI 160.000€ Udo Blell – FAIR Synchrotrons

  11. Time schedule – injection septum Udo Blell – FAIR Synchrotrons

  12. Inflector magnet New design Magnet • Design goals • Optimized beam path • Build in heating seal Injection channel Connector box SIS beam pipe Udo Blell – FAIR Synchrotrons

  13. New inflector magnet design Udo Blell – FAIR Synchrotrons

  14. Costs inflector magnet • Construction time GSI • Preliminary investigations and project analyses 450 h • Summary 450 h • Manufacturing costs GSI and other companies • Material and manufacture 46.412€ • Summary 46.412€ • High current power supply • Supplied by Jäger 160.000€ Udo Blell – FAIR Synchrotrons

  15. Time schedule – inflector magnet Udo Blell – FAIR Synchrotrons

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