| 摘要 |
PURPOSE:To improve the measuring time resolution and reduce the dead time with a simple constitution so as to improve the locus measuring accuracy by providing a collision trigger signal sending means, position signal detecting means, particle locus calculating means, etc. CONSTITUTION:A trigger signal generator 23 and sweep voltage generator 24 apply a voltage proportional to the time elapsed after the colliding timing of charged particles across deflection electrodes 20a and 20b. Particle detecting signals generated from each wire 11a are passed between the electrodes 20a and 20b in a streak tube 15 as particle detecting electric signals. The electric signals reach the detecting surface of a microchannel plate 21 after the signals are deflected proportionally to the time elapsed and converted into position signals. The position signals are stored in a memory 25. Therefore, the measuring time resolution is improved and the dead time of the detector is reduced with a simple constitution and the locus measuring accuracy of the detector can be improved, because a computer 22 calculates the particle detecting time of each wire 11a and the locus of the particles based on the detecting time.
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