A Gas-Filled-Magnet Time-of-Flight Detector for Accelerator Mass Spectrometry Measurements

In order to improve the power of isobaric identification in the accelerator mass spectrometry (AMS), a new detector called gas-filled-magnet time-of-flight (GFM-TOF) detector were set up. Based on Beijing Q3D spectrometry, the gas-filled-magnet time-of-flight detector was mainly made up of a starting time detector in the target chamber and a stopping time detector on the focal plane. The isobars have different flight path in the gas-filled magnet region, so the isobars will have different residual energy, time of flight and position when they get to the focal plane. The principle, structure and experiment results of the first on-line test were introduced.