This DocDB will be archived as of EOB Friday, Aug. 28, 2015,
which no changes
additions can be made to it. The documents will remain available for download and reference. The destination for all new
documents and updates to existing documents for DUNE and LBNF is docs.dunescience.org.
The purpose of this letter is to describe the major opportunities for collaboration between European institutions and Fermilab over the next two decades. Fermilabs intensity frontier program includes two major projects that work synergistically: the Long-Baseline Neutrino Experiment (LBNE) that will send a new neutrino beam from Fermilab to Homestake (1300 km baseline); and the Project X accelerator and experimental program that includes megawatt-class beams at several energies. Both projects provide unequaled opportunity for scientific discovery at the intensity frontier. International collaborators would derive the maximum scientific benefit from participation in these projects since a large fraction of the necessary infrastructure will be provided by Fermilab. Multiple additional opportunities exist for collaboration in significant but shorter-term experiments at Fermilab during the development and construction phases of LBNE and Project X.