3P-33 PDF
Improvement of pulse height distribution in superconducting nano-strip ion detectors
Superconducting strip ion detectors (SSIDs) are promising for realizing ideal ion detection in time-of-flight mass spectrometry. To realize large sensitive area for practical use, parallel configurations of nano-scale superconducting strips are mandatory. We have found, in a previous parallel configuration design, that a non-negligible number of ion impact events were lost because a large number of output current pulses for single ions were fatally small. It has been revealed that ion impact events induce dynamical change of bias current flow among parallel superconducting strips, which results in small output pulses. An alternative parallel configuration design has solved this critical problem by the improvement of pulse height distribution.