Task7: NUSTAR2 - Design and Prototype Construction of a Radiation-Resistant Magnet

1. Task7: NUSTAR2 - Design and Prototype Construction of a Radiation-Resistant Magnet Martin Winkler Kick-off meeting EU DS "DIRACsecondary-Beams", April 14-15, 2005, GSI, Darmstadt, Germany • The Pre-Separator of the Super-FRS • Sub-Tasks of NUSTAR2 (Choice) • Implementation Plan, Milestones & Deliverables • Project Resources and Budget Task leader of NUSTAR2: Gebhard Moritz, GSI Martin Winkler, Task7: NUSTAR2 15-4-05

2. Design parameters and layout of the Super-FRS Design Parameters High-radiation area • Large phase space  large aperture magnets • High beam energies + large apertures •  high pole tip fields for quadrupols •  use superconducting magnets Martin Winkler, Task7: NUSTAR2 15-4-05

3. Requirements of Magnetic Elements of the Preseparator Can the magnets stay superconducting after the target and beam dumps? PF2 1,3 Martin Winkler, Task7: NUSTAR2 15-4-05

4. Beam dump locations in the 1st stage of the Pre-Separator Target Trajectories of primary beams with different DBr/ Brbeam Beam Dumps Light fragments The primary beam is always dumped in well-defined positions outside the magnets ! Martin Winkler, Task7: NUSTAR2 15-4-05

5. Exploration of radiation load on magnets behind the high-power production target Projectile: 1500 MeV/u 238U 1012/s σx = 1.0 mm σy = 2.0 mm σp /p = 0.5% Energy deposition distribution (calculated with PHITS) Target: Carbon 4 g/cm2 Geometry Avarage energy depositionon on the coil surface: <DE>/M= 0.46 mJ/g (quench limit: 2-3 mJ/g) Heat load on the cryogenic system for a 5 ton quadrupole magnet: Expected FAIR cryogenic power: 20 kW ≈ 2.3 kW Martin Winkler, Task7: NUSTAR2 15-4-05

6. Radiation sensitivity of coil materials and insulator Behind target and beam dump:Expected heat load ≈ 1 mJ/g  is equivalent to a dose rate of 1 Gy/s Assume 4000 h/year operation time  14 MGy accumulated dose  Ceramic insulation is required Martin Winkler, Task7: NUSTAR2 15-4-05

7. Radiation resistant (normal-conducting) magnet Magnet Cross Section Parameter: B = 1.6 T I = 600 A J = 1.5 A/mm2 P = 50 kW ΔB/B ≈ 2×10-4 ΔR = ±20 cm Weights (12.5 m, 11°): Fe: 72 t Cu: 9.5 t Coil Cross Section Martin Winkler, Task7: NUSTAR2 15-4-05

8. Conceptual design of a high-precision Survey and Alignment System for high-radiation areas of FAIR After commissioning of the SuperFRS a very high level of radiation is expected. S&A "as usual" will not be possible due to prohibited or limited access. No access of human personnel High demands on accuracy (some 1/10 of mm) Handling curved beamlines with a length up to 50 m "RALF" - Remote ALignment on the Fly Based on Photogrammetry non-contact high accuracy data capture within a shorttime Automated guided vehicle system Remotely controlled adjustment of accelerator components in cooperation with i3mainz Institute for Spatial Information and Surveying Technology Martin Winkler, Task7: NUSTAR2 15-4-05

9. Multi-annual implementation plan for NUSTAR2 Martin Winkler, Task7: NUSTAR2 15-4-05

10. Participating institutes in task7 (NUSTAR2) Martin Winkler, Task7: NUSTAR2 15-4-05

11. Milestones and Deliverables of NUSTAR2 • Milestones • M7-1: Decision on insulating material, 10/2005* • M7-2: Delivery of model coil, 9/2006* • M7-3: Design and test for Surveying and alignment system • finished, 4/2007* • M7-4: Prototype Magnet delivered, 12/2007* • Deliverables • D13: Report on exploration of conductor and cable, 1/2006* • D14: Report on the model coil, 1/2007* • D15: Report on surveying and alignment system for high- • radiation areas, 7/2007* • D16: Report on design and construction of the prototype • magnet, 12/2007* Martin Winkler, Task7: NUSTAR2 15-4-05

12. Summary of Project Resources and Budget of the DP NUSTAR The requested 589 k€ from the EU correspond to ≈ 41% of the overall EU request for the DP NUSTAR Martin Winkler, Task7: NUSTAR2 15-4-05