GAS STRIPPING TARGET Russian patent published in 2016 - IPC G21K1/14 

FIELD: acceleration equipment.

SUBSTANCE: gas stripping target relates to acceleration equipment and can be used in tandem charged particle accelerators for ion implantation, neutron capture therapy of cancer or for detecting explosives and narcotic drugs. Gas stripping target is made as a tube with gas puffing in the middle, it is positioned inside the high-voltage electrode and is shifted in parallel relative to the axis of acceleration of charged particles. Herewith before entering the target and after its exit there are two pairs of magnets with transverse magnetic fields identical in dimensions but of different polarity. In the magnetic field low-energy positive ions of the stripping gas leaving the stripping target deviate at the angle of about 130-180° into the absorber. In the magnetic field there is also a parallel shift of the beam of high-energy ions.

EFFECT: technical result is improvement of gas conditions in the acceleration channel due to the fact that the flow of neutral gas from the target is directed not towards the center of the input and the output diaphragm of the high-voltage electrode, but to the inner wall of the high-voltage electrode, thus excluding penetration of low-energy positive ions of the stripping gas into the acceleration duct.

1 cl, 1 dwg