A Concept for a Scalable 2 kTon Liquid Argon TPC Detector for   Astroparticle Physics
  This paper describes the results of a study on the general lines, main construction criteria, crucial points, parameters and required preliminary R&D activities for the construction of a LAr (liquid argon) imaging detector with active mass in the 10-100 kTon range. Such detectors are crucial for supernova detection, proton decay, LBL neutrino physics and other astroparticle physics applications. 
D.B. Cline and F. Sergiampietri