Cyclotron and method of adjusting the same having an ion puller

Details Cyclotron and method of adjusting the same having an ion puller Cyclotron and method of adjusting the same having an ion puller

1996-10-17

1998-06-09

O'Shea, Sandra L.

Electric lamp and discharge devices

Cyclotrons

315502, 315507, H05H 1300, H01J 2300

Patent

active

057639868

ABSTRACT:
A cyclotron comprises a dee, an ion source cone provided with an ion outlet through which ions are emitted, and an ion puller electrode mounted on the dee to pull out ions from the ion source cone through the ion outlet by applying a voltage between the ion source and the ion puller electrode. The ion source cone can be moved from outside the cyclotron without breaking the vacuum of the cyclotron. The ion puller electrode has a sliding aperture member provided with an aperture and capable of being moved relative to the dee. An operating projection of the ion source cone is brought into engagement with the aperture member, and then the ion source cone is moved to move the aperture member to a desired position. Thus, the aperture of the ion puller electrode can be positioned at an appropriate position opposite the ion outlet by moving the ion source cone without requiring any special mechanism for moving the ion puller electrode.

REFERENCES:
patent: 4139777 (1979-02-01), Rautenbach
patent: 4146811 (1979-03-01), Tran et al.
patent: 5416440 (1995-05-01), Lyons et al.
Database WPI Section E1, Week 9512 Derwent Publications Ltd., JP07014534A (Nisshin Electrical Co Ltd), Jan. 17, 1995.
1975 Particle Accelerator Conference, Washington, D.C., Mar. 12-14, 1995, vol. 22, No. 3, Mallory et al, "A rotatable cold cathode Penning ion source", pp. 1669-1671, Jun. 1975.

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