Patent ID: 8263941

Claim:
An ion mass analyzer for performing mass analysis of different ion species within a traveling ribbon ion beam and produce an image thereof, said analyzer comprising: a first solenoid coil defining a space through which an ion ribbon beam passes, said first solenoid coil configured to generate a first magnetic field in a first direction in response to an applied current to alter trajectories associated with ions within said ion ribbon beam traveling through said to space of said first solenoid coil based on a respective mass of each of said ions; a second solenoid coil spaced a distance “d” downstream from said first solenoid coil in the direction of said traveling ion ribbon beam, said second solenoid coil defining a space through which said ion ribbon beam received from said first solenoid coil travels, said second solenoid coil configured to generate a second magnetic field in response to applied current such that said second magnetic field is in an opposite direction from said first magnetic field; said second solenoid coil configured to further bend the trajectory of the ions received within said ion ribbon beam from the first solenoid coil based on the respective mass of each of said ions; at least one yoke having a first recess and a second recess, said first recess configured to receive a portion of said first solenoid coil and the second recess configured to receive a portion of said second solenoid coil, said yoke connected to said first and second solenoid coils to complete a circuit formed between said yoke, said first solenoid coil and said second solenoid coil.