Construction of new facilities and major experimental equipment to advance the field of high energy physics. For more information with regard to how the Office of Science manages the construction and fabrication of projects, click here.
*The Office of Science requires that a series of high level, Critical Decisions (CDs) be made in order for a project to advance:
- Critical Decision (CD) 0: Approve Mission Need
A determination is made that there is a scientific case to pursue the project. Some of the possible alternative means of delivering the science are presented as well as a coarse estimate of the cost.
- Critical Decision (CD) 1: Approve Alternative Selection and Cost Range
One of the alternatives proposed in the CD-0 is selected and a credible cost range is established.
- Critical Decision (CD) 2: Approve Performance Baseline
The technical scope of work, the cost estimate, and the construction schedule is sufficiently well known that the project can be completed on the specified schedule and within the specified budget.
- Critical Decision (CD) 3: Approve Start of Construction
Engineering and design are sufficiently complete that construction, procurement, and/or fabrication may begin.
- Critical Decision (CD) 4: Approve Start of Operations
The project is ready to be turned over to the organization that will operate and maintain it. The criteria for this stage are defined in the Performance Baseline.