Technical Design Report Super Fragment Separator

S1
(a)
Figure 2.4.136: (a) Zoom of the schematic
of cryogenic distribution in the region
of three branches; (b) helium distribution
box S1; (c) helium distribution box
S2
S2
DRAFT
(b) Helium distribution box S1
(c) Helium distribution box S2
The zoom of the cryogenic distribution for the low energy experimental region is shown in Figure
2.4.137. In contrast to the normal dipole and multiplet grouping, one multiplet, one dipole and one
quadrupole which are housed in three individual cryostats just in front of the energy buncher may
need to be grouped together and supplied by one feedbox unit with liquid helium. Inconsistencies
may happen due to the different hydrodynamic characteristics of the three components in one
group. An alternative solution, for example helium supply in series instead of in parallel, must be
considered. One point which should also be addressed is that a flexible cryogenic connection line
may be needed for the jumpers between the feedbox and the magnets if these three components in
one group are mounted on a rotatable platform according to the experimental requirement. A
special case also occurs for the 5 quadrupoles and hexapoles in front of the DESPEC/stopping cell
setups in the last part of Low-Energy experimental area.
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