De-convolution of complex residual gas spectra at JET

Spectral analysis of the vacuum conditions within the JET tokamak provides unique challenges due to the complex interactions of Hydrogen, Deuterium and Tritium with the large amounts of Carbon forming the plasma facing first wall. Overlapping masses and low resolution of the quadrupole Residual Gas Analyzer (qRGA) means discrimination of individual species is not possible operating in a conventional mode. Baking the vessel to temperatures in excess of 300 degrees Celsius further complicates an already difficult task.