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The Advanced Superconducting Test Accelerator (ASTA) currently undercommissioning at Fermilab will enable a broad range of beam-based experimentsto study fundamental limitations to beam intensity and to developtransformative approaches to particle-beam generation, acceleration andmanipulation. ASTA incorporates a superconducting radiofrequency (SRF) linaccoupled to a photoinjector and small-circumference storage ring capable ofstoring electrons or protons. ASTA will establish a unique resource for R&Dtowards Energy Frontier facilities and a test-bed for SRF accelerators andhigh-brightness beam applications, including ERLs. The unique features of ASTAinclude: (1) a high repetition-rate, (2) one of the highest peak and averagebrightness within the U.S., (3) a GeV-scale beam energy, (4) an extremelystable beam, (5) the availability of SRF and high quality beams together, and(6) a storage ring capable of supporting a broad range of ring-based advancedbeam dynamics experiments. These unique features will foster a broad program inadvanced accelerator R&D which cannot be carried out elsewhere. We describeASTA and its experimental program, with particular emphasis on the ERL-relatedaccelerator R&D opportunities.

Novel ASTA Users Facility At Fermilab: A Testbed For Superconducting RF Technology And ERL R&D