Cryogenic liquid mixtures for SSC calorimetry

A potentially important component of the SSC detector array is cryogenic liquid-filled calorimeters. Pure cryogenic liquids (Ar or Xe) offer the advantages that they are resistant to radiation damage and they can be purified relatively easily. However, the response of pure cryogenic liquids may not be fast enough for the high fluxes generated. Preliminary studies have indicated the performance of cryogenic liquid-filled detectors can be enhanced by one of two types of additives to the basic cryogenic liquid (Ar or Xe) in a binary or ternary liquid system. The solubilities of a number of potential molecular additives to liquid Ar and to liquid Xe were calculated using the Scatchard-Hildebrand theory