Patent ID: 9595432
Date: 2017-03-14
CPC Classifications: H01J

Claim:
1. A time-of-flight mass spectrometer comprising: an ion source for supplying sample ions; a segmented linear ion storage device for receiving the sample ions; a voltage supply; and a time-of-flight mass analyzer, and wherein the segmented linear ion storage device comprises: wherein the time-of-flight mass analyzer operates to perform mass analysis of ions ejected from the extraction region wherein the voltage supply operates to supply to the device: wherein each segment comprises a respective plurality of electrode sections that each have an interior surface, wherein, for each electrode section of a first segment of the pair of adjacent segments for which the interior surface is continuous, a respective distance from the longitudinal axis of the ion storage device to a nearest point to the longitudinal axis of the ion storage device along the interior surface of the electrode section is substantially equivalent to a same first distance, wherein, for each electrode section of a second segment of the pair of adjacent segments for which the interior surface is continuous, a respective distance from the longitudinal axis of the ion storage device to a nearest point to the longitudinal axis of the ion storage device along the interior surface of the electrode section is substantially equivalent to a same second distance, and wherein the first distance for the first segment is different than the second distance for the second segment.