Technical Design Report Super Fragment Separator

DRAFT
Figure 2.4.134: Schematic of cryogenic distribution for the Super-FRS.
Figure 2.4.135 shows more details of the cryogenic distribution in the Pre- and Main-Separator.
Following the three radiation resistive normal-conducting dipoles in the Pre-Separator there are 6
superconducting quadrupoles and 2 hexapole magnets which are located in a certain distance from
each other. Therefore these magnets are housed in 8 cryostats individually. In a similar way to the
dipole groups, every four of them before and after the symmetry mirror could be supplied in parallel
by one feedbox unit with liquid helium. The feedbox unit is identical with the one used for
dipole stage but has four jumpers. As described in the two previous sections, three dipole units in
each dipole stage and two multiplets located on both side of the symmetry mirror position are fed in
parallel by one feedbox unit individually. The feedbox units are connected by many short sections
of cryogenic transfer line. The helium transfer is ended at the both sides of the target region by the
functionality of two end-boxes. Such end-boxes should be integrated in the design of the last
feedbox unit just before the helium transfer ends in order to save installation space.
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