Technical Design Report Super Fragment Separator

DRAFT
Figure 2.4.23: Coil cross-section indicating the four layers and the four water-cooled radiators.
One coil section consists of 48 turns of radiation-resistant cable with an average length of L ≈ 8.75
m. The cable length in one section is thus approximately 400 m and in total the magnet requires
about 3200 m of radiation resistant copper cable. The cross-section of the radiation-resistant cable
is (19 ×19) mm 2 . The cable consists of the central copper core with a cross-section of S = 190 mm 2 ,
a magnesium oxide interlayer of 1÷1.5 mm, and a copper envelope of approximately 1 mm
thickness. The total resistance of two coils connected in series is 0.32 Ohm. The power consumption
of one section of the coil will be 18 kW and thus the total power consumption of the whole
magnet will be approximately 144 kW at maximum field. The voltage drop across two coils connected
in series will be 215 V.
The water-cooled radiator consists of a 10 mm thick plate including three milled grooves where
stainless steel tubes are incorporated (Ø 6 mm inner diameter, Ø 8 mm outer diameter). Each tube
is connected independently to the water conduit but in parallel to the other tubes.
The weight of one coil section is approximately 1.4 tons, thus in total each coil weighs about 5.6
tons.
2.4.2.1.2 Superferric dipole magnets
The main design parameters of the superferric dipole magnets for the Super-FRS are:
• DC operation,
• warm iron and warm bore (including warm vacuum chamber),
• large pole gap (170 mm),
• moderate maximum field (1.6 T).
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