  A plasma has been observed inside the vacuum chamber of the PSI Ring
Cyclotron. This ionized gas cloud maybe a substantial contributor to several
interior components having reduced lifetimes. The plasma's generation has been
directly linked to the voltage that is applied to the Flat Top Cavity through
visual confirmation using CCD cameras. A spectrometer was used to correlate the
plasma's intensity and ignition to the Flat Top Cavity voltage as well as to
determine the composition of the plasma. This paper reports on the analysis of
the plasma using spectroscopy. The spectrometer data was analyzed to determine
the composition of the plasma and that the plasma intensity (luminosity)
directly corresponds to the Flat Top voltage. The results showed that the
plasma was comprised of elements consistent with the cyclotrons vacuum interior
