; and (2) by adding at the end the following: (c) Versatile neutron source (1) Mission need (A) In general Not later than December 31, 2017, the Secretary shall determine the mission need for a versatile reactor-based fast neutron source, which shall operate as a national user facility. (B) Consultations required In carrying out subparagraph (A), the Secretary shall consult with the private sector, institutions of higher education, the National Laboratories, and relevant Federal agencies to ensure that the user facility described in subparagraph (A) will meet the research needs of the largest practicable majority of prospective users. (2) Establishment As soon as practicable after determining the mission need under paragraph (1)(A), the Secretary shall submit to the appropriate committees of Congress a detailed plan for the establishment of the user facility. (3) Facility requirements (A) Capabilities The Secretary shall ensure that the user facility will provide, at a minimum, the following capabilities: (i) Fast neutron spectrum irradiation capability. (ii) Capacity for upgrades to accommodate new or expanded research needs. (B) Considerations In carrying out the plan submitted under paragraph (2), the Secretary shall consider the following: (i) Capabilities that support experimental high-temperature testing. (ii) Providing a source of fast neutrons at a neutron flux, higher than that at which current research facilities operate, sufficient to enable research for an optimal base of prospective users. (iii) Maximizing irradiation flexibility and irradiation volume to accommodate as many concurrent users as possible. (iv) Capabilities for irradiation with neutrons of a lower energy spectrum. (v) Multiple loops for fuels and materials testing in different coolants. (vi) Additional pre-irradiation and post-irradiation examination capabilities. (vii) Lifetime operating costs and lifecycle costs. (4) Deadline for establishment The Secretary shall, to the maximum extent practicable, complete construction of, and