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The deadline arrives: Checking in on the Reactor Pilot Program
On May 23, 2025, President Trump signed Executive Order 14301, “Reforming Nuclear Reactor Testing at the DOE,” which instructed the Department of Energy to create a Reactor Pilot Program (RPP)—a new system in which companies could pursue DOE authorization to build and test their first-of-a-kind nuclear technologies. EO 14301 set an ambitious goal for that program: three reactors achieving criticality by July 4, 2026.
D. R. Metcalf and P. F. Zweifel
Nuclear Science and Engineering | Volume 33 | Number 3 | September 1968 | Pages 318-326
Technical Paper | doi.org/10.13182/NSE68-A19240
Articles are hosted by Taylor and Francis Online.
Particular numerical methods are described for solving the two-group neutron transport equations obtained in a companion paper. Numerical solutions are presented for the Milne problem and the constant source problem, and the results are compared with P1, P3, and double P1 calculations. The most interesting result is the occurrence of a resonance in the continuum expansion coefficient which appears to be due to a zero of the dispersion function Ω(z) in the unphysical Riemann sheet.
