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.
By optimizing the horn focusing system, modest increases can be achieved in the low-energy part (1 GeV region) of the neutrino spectrum at NuMI, compared to the existing NuMI LE (low energy) tune. Variations using the existing horn system would be inexpensive. For a new horn design, by looking at the WBS elements for the LBNE old reference design, one could guess that the development, prototyping and construction of new horns, power supply, strip-lines and target, when done under project accounting, would likely increase costs a couple 10's of millions of dollars TPC.