1. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 1 Reactions with Relativistic Radioactive ions Beams GSI Large Acceptance Dipole R 3 B-Glad Status Bernard Gastineau DSM Irfu, CEA Saclay R3B Technical Board Meeting GSI April 27, 2009

2. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 2 Magnet design : –Cold Mass new design –Cryostat new design Experimental area Fabrication of the magnet Schedule R3B - Large acceptance dipole magnet

3. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 3 Last coil configuration – 5.2 tons Large acceptance dipole The six trapezoidal racetrack coils are tilted with respect to the beam direction. There are two main coils and four lateral coils which are connected in series in a butterfly-like shape.

4. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 4 Aluminium 20 tons 3.1 m (length) x 4.6 m (width) x 2.8 m (height) Large acceptance dipole Cold mass Previous design

5. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 5 Magnet Cryostat Previous design Large acceptance dipole Overall size : Length4 m Width6 m Height4 m Mass45 t

6. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 6 Helium tank Linking plate Cooling pipes Cold Mass New design Total weight 22 tons 3.5 m (length) x 4.8 m (width) x 2.5 m (height) Large acceptance dipole

7. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 7 Helium tank Fixed support Mobile support Cold Mass New design Large acceptance dipole

8. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 8 Cryostat study Many parts of reinforcements

9. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 9 Large acceptance dipole Global thickness = 15 mm Magnet Cryostat New design 50 mm 30 mm

10. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 10 External vacuum vessel Total strain < 4.5 mm Loads: Cryostat weight Cold mass weight ~ 25 tons Pressure = 0.1 MPa Buckling analysis Large acceptance dipole

11. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 11 External vacuum vessel Total strain ~ 1.5 mm Internal vacuum vessel Total strain ~ 1.2 mm max Handling of the whole Magnet Total weight : Cold mass + Cryostat Large acceptance dipole

12. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 12 CryostatPrevious designNew designWith satellite Length4 m with exit flange 4.4 m with exit flange Width6 m5.5 m7 m Height4 m3.6 m Mass45 t Large acceptance dipole

13. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 13 Experimental area (not final) Geb #6a (Betriebsgebäude) Geb #6b (Low-Energy cave) Geb #6 (High-Energy cave) CR/NESR Source GSI-FAIR Janvier 2009

14. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 14 To install the magnet in the hall, we need in particular : - Precise location of power lines, control and power cabinets, this should be define now to prepare the order of the power supply. - Precise location of cryogenic lines and feed-box, the same lines could be used for the tests at Saclay. - System of rotation of the magnet on air-pads (~ 50 tons), Bertin company give the advice to install a fixed axis linked to the magnet, coupled with a mirror resin floor. Large acceptance dipole Experimental area

15. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 15 R3B-GLAD Control room - Power supply - Magnet Control System Large acceptance dipole This location must be approved permanently - on the right side - Power supply : lines < 50 m - Local MCS < 10 m to the magnet

16. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 16 Large acceptance dipole Fabrication of the magnet Cold mass (coil winding + coil casings + integration of coils in their casings) : - the thermo-mechanical study is completed at the nominal level of forces - consequences of default values of coil positions have been studied - the cold mass has been ordered in January and is now under construction - The cold mass cooling calculations are underway in 3D, being updated with new parameters. Due to the presence of eddy currents, the time necessary to establish the nominal current (~4000 A) could be longer than expected. Cryostat (Vacuum vessel + thermal screens + satellite + supports) The Cryostat study is under progress, and a PRR review will be organised next month. The interfaces with the hall and the experiments are now defined by some features recently decided : - for ex., the satellite position will be changed and placed on the right side. For this, we have already modify the joints in the cold mass drawings. - The entrance and the exit flanges of the of the vacuum vessel windows are now fixed.

17. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 17 Schedule Answers to the Cold Mass call for tender are waited this week Large acceptance dipole Station d’essai

18. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 18 The R3B-GLAD magnet construction 1) Superconducting cable definition: June 2006 2) Reception of the first cable from the manufacture: June 2007 3) Complete delivery & test of the cable: April 2008 4) Cold mass design study (thermal, magnetic & mechanical): June 2008 5) R3B-GLAD set-up interface definition: Quarter 4, 2008 6) First coil winding: 2nd quarter 2009 7) First integration of the six coils in the cold mass: 1st quarter 2010 8) Cold-mass tests in Saclay: 2nd quarter 2010 9) Second integration of the complete magnet: end of 2010 10) End of full test in Saclay: 3rd quarter 2011 11) Installation at GSI/FAIR: end of 2011 Large acceptance dipole

19. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 19 As previously decided : - Power lines and power supply. - Cryogenic lines and Feed-box to connect GLAD to FAIR - System of rotation of the magnet on air-pads, and Specific floor - Vacuum pumping system Moreover CEA Irfu is asking for the funding of : - Magnetic measurements, and tests at Saclay, If they are required because of the FAIR delay. Large acceptance dipole R3B Collaboration Funding

20. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 20

21. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 21

22. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 22

23. CEA DSM Irfu - Bernard GASTINEAU - R3B Technical Board Meeting -April 4, 2009 23 Tests of the delivered SC cable lengths - OK After cold mass complete design, finalisation of cryostat study Engineering design review Call for tender and ordering to the industry of : – the winding & impregnation of the coils, – the coil casing fabrication, – and the integration in the cold boxes Ordering of the cryostat Assembly and local test of the MSS