Evolution of the Cerenkov x total-energy telescope for isotopic analysis of cosmic rays

This paper discusses the evolution of the Cerenkov x total energy technique for isotopic analysis of cosmic rays as developed by the University of New Hampshire. This technique is generally restricted to particles with Z greater than 6, and the best mass resolution is achieved over a relatively narrow energy range just above the Cerenkov threshold. State-of-the-art mass resolution is now 0.3-0.4 AMU throughout the charge range z = 8-28 and over an energy range varying from about 40 MeV/n at lower Z to about 200 MeV/n for Fe.