Summing amplifier experiment

A project log for Cosmic Array

An array of individual cosmic ray detectors distributed across a landscape to display how cosmic rays arrive as showers of muons.

Robert Hart 11/13/2016 at 05:230 Comments

his detector design is an experiment in using a summing amplifier for measuring coincidence between multiple ionizing radiation detectors. In this example four Geiger–Müller tubes. The output would be used to drive different colours and sounds based on the voltage level of each pulse. It would also display background radiation as a specific colour/sound which would be ~1/4V pulse. Where a muon strike (cosmic ray) being either ~1/2V ~3/4V and ~1V.

Note the pulse height clearly increasing when the tubes are oriented from vertical to horizontal. This is a result of an ionizing particle traversing through more than one GMT originating from the sky.