Instrument Troubleshooting, Feeding the Magnet

Instrument Troubleshooting

Cosmic ray instruments are complex and it seems there is always something that needs adjusting or fixing or calibrating, and then testing and confirming and re-calibrating.  This is what consumed our time while waiting for the wind to die down.  And it is a good thing to have had that time to do those last ground tests, because we encountered a troubling condition—an intermittent false trigger.  

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Launching CRISIS

This is the beginning of a series of posts that describe the launching of a scientific balloon experiment in 1977. The story was reconstructed after encountering some old photos from that event. Reminiscences can run rather long, so I have partitioned it into more manageable segments. I hope you enjoy this snapshot of the scientific and cultural times of the 1970s.

Background

While attending the University of Minnesota, one of my part-time jobs was as a lab assistant in the Physics and Astronomy Department.  I worked in a laboratory dedicated to the cosmic ray research group led by professors Phyllis Freier and C J (Jake) Waddington.  In the group were lab manager Chuck Gilman and graduate student Bob Scarlett who were preparing an instrument to be launched and held aloft by a balloon to gather data about cosmic rays, a (still) mysterious radiation of high energy particles from deep outer space.

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