Beam Dynamics Home : Main Linac : Magnet Package (Quadrupole)
FEL Beam Dynamics Group - Magnet Package (Quadrupole)

Schematic view of the Magnet Package, the BPMs and the Current Leads.
 
Parameters of the cold superconducting quadrupole magnet
    Quadrupole Magnet
Winding type   Super-ferric
Iron yoke inner diameter [mm] 94.4
Iron yoke outer diameter [mm] 270
Nominal current [A] 50
Nominal gradient [T⁄m] 35
Magnetic length [mm] 166.5
Number of turns   646 (34×19)
Wire diameter (bare⁄insulated) [mm] 0.4⁄0.438
Copper to superconductor ratio   1.35
RRR   >70
Filament diameter [µ] 35
Twist pitch [mm] 50
Iron yoke length [mm] 140
Coil length [mm] 200.6
Stored magnetic energy at 50 A [J] 1439
Self inductance [H] 1.15
Integrated gradient at 50 A [T] 5.828
Integrated b6 at 50 A 10-4×b2 at 30 mm 1.34
Integrated b10 at 50 A 10-4×b2 at 30 mm -1.10
Coil peak field [T] 2.47
Integrated gradient at 5 A [T] 0.6284
Integrated b6 at 5 A 10-4×b2 at 30 mm 0.36
Integrated b10 at 5 A 10-4×b2 at 30 mm -0.04
Saturation at 50 A (integrated) [%] <5