Design of a Radio Frequency Quadrupole Driver for Time-of-Flight Mass Spectrometer

The direct digital frequency synthesis (DDS) technique was applied to mass spectrometry domain. A radio frequency quadrupole driver (RFQ Driver) was designed and constructed for a high resolution orthogonal-extraction time-of-flight mass spectrometer (O-TOF MS). The frequency can be set from 500 kHz to 2 MHz at 1 Hz per step， and the magnitude is also tunable 0-1 000 Vp-p. The device is reliable, inexpensive and userfriendly.