Patent ID: 8581185
Filing Date: 2013-11-12
Classification: H01J

Abstract:
1. An ion storage device, comprising: at least four elongated electrodes defining an ion storage volume, the electrodes defining first and second radial directions along with ions may be ejected from the ion storage volume to a location external to the ion storage device, the first and second radial directions being different; a power supply for providing RF potentials to the at least four electrodes to establish an RF field that radially confines ions within the ion storage volume; the power supply further providing independently controllable DC offsets to each one of the at least four electrodes, the power supply being configured to, in response to selection of one of the first or second radial directions, adjust DC offsets applied to the at least four electrodes to cause ions to be orthogonally ejected from the ion volume in the selected radial direction.