Superconducting dipole magnet for CBM.

1. Superconducting dipole magnet for CBM. The status of the SCdipole magnet for project CBM. E.A. Matyushevskiy, P.G. Akishin, A.V. Alfeev, V.S. Alfeev, V.V. Borisov, V.V. Ivanov, E.I. Litvinenko, A.I. Malakhov. Authors present the engineering project of superconducting dipole magnet for СБМ experiment. Parameters of the magnet corresponds to last requirements of project CBMto magnetic system on formation of the working aperture and sizes of a field in a gap of the magnet and the minimal the field in area RICH. Tarulinna, Sortavala, Karelia 02.06.2009 y.

2. SC dipole magnet with the aperture 1.3x1.6 m in a gap of the magnet and length along a beam equal 1 m is shown.

3. Geometrical parameters of the SC dipole magnet.(The energy reserved in a magnet at a working current makes 3.4 MJ)

4. The is a cryostatsystem of a winding of the dipole magnet with the coils executed from a superconducting cable.

5. The is a block from external and internal screens with elements of installation and fastening to an yoke of the magnet.

6. The scheme of calculation under codes ANSYS, TOSCA and RADIA is shown.

7. Distribution lBl inside a gap of the magnet on distance from a target up to 1.6 m along a beam and distribution of the field along the beam on distance from 1.6 m up to 4.0 m from a target is shown./code ANSYS/ /code TOSCA/

8. Distribution of the field in a gap of the magnet and integral of the field on distance from -1.0 m up to 5.0 m from a target along a beam is shown. /code TOSCA/

9. Distribution of the field in cross-section of the magnet inside of a gap of the magnet and in an yokeof the magnet is shown. /code RADIA/

10. Distributions of the field in cross-section of the magnet inside of a gap of the magnet (a left picture) and in yokeof the magnet (a right picture) are shown. /code RADIA/

11. Distributions of a field in longitudinal section inside of the gap of the magnet (a left picture) and in the yokeof the magnet (a right picture) are shown. /code RADIA/

12. Distribution |Bxy| of a field inside of volume (area of photo detectors of the RICH) and distribution in the form of equipotent surfaces of thefield are shown. /code ANSYS/

13. The picture of distribution of the field in a plane Х-Y on distance of 1.6 m from a target (beginning of area of photo detectors of the RICH) is shown. /code ANSYS/

14. Distribution of componentsBx,Byand Bz of the fieldalong the bottom edge of the plane X-Y depending on length for area of photo detectors RICH is shown. The height changes from 1.0 m up to 1.5 m and on distance of 1.6 m from a target. /code RADIA/

15. Pictures of distribution of a field in a plane Х-Y with coordinates X (0, 1.6); Y (0.5 m, 1.5) on distance of 1.6 m and 1.7 m from a target accordingly (area of photo detectors) are shown. /code TOSCA/

16. Distributions of a field in a plane Х-Y with coordinates X (0, 1.6); Y (0.5 m, 1.5) on distance of 1.6 m and 1.7 m from a target accordingly (area of photo detectors) are shown. /code RADIA/.

17. Pictures of distribution of a field in a plane Х-Y with coordinates X (0, 1.6); Y (0.5 m, 1.5) on distance of 1.8 m and 1.9 m from a target accordingly (area of photo detectors) are shown. /code TOSCA/

18. Distributions of the field in a plane Х with coordinates X (0, 1.6); Y (0.5 m, 1.5) on distance of 1.8 m and 1.9 m from a target accordingly (area of photo detectors) are shown. /code RADIA/

19. Distributions of a field at area of photo detectors RICH of dependence of size of a current inside coils of excitation of windings of a magnet are resulted. /code RADIA/

20. Distributions of a field at area of photo detectors RICH of dependence of size of a current inside coils of excitation of windings of a magnet are resulted. /code RADIA/