The recent development of Water-based Liquid Scintillator (WbLS), and theconcurrent development of high-efficiency and high-precision-timing lightsensors, has opened up the possibility for a new kind of large-scale detectorcapable of a very broad program of physics. The program would includedetermination of the neutrino mass hierarchy and observation of CP violationwith long-baseline neutrinos, searches for proton decay, ultra-precise solarneutrino measurements, geo- and supernova neutrinos including diffuse supernovaantineutrinos, and neutrinoless double beta decay. We outline here the basicrequirements of the Advanced Scintillation Detector Concept (ASDC), whichcombines the use of WbLS, doping with a number of potential isotopes for arange of physics goals, high efficiency and ultra-fast timing photosensors, anda deep underground location. We are considering such a detector at the LongBaseline Neutrino Facility (LBNF) far site, where the ASDC could operate inconjunction with the liquid argon tracking detector proposed by the LBNEcollaboration. The goal is the deployment of a 30-100 kiloton-scale detector,the basic elements of which are being developed now in experiments such asWATCHMAN, ANNIE, SNO+, and EGADS.
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