Existing experiments have their progress reviewed on an annual basis by the SAREC committee at the request of the FACET Division Director.
This typically requires a short presentation to the SAREC committee at an annual FACET & Test Facilities User Meeting. The presentation should describe the progress and future plans for the experiment (future plans should be at least a third of the presentation to justify continuation).
Existing experiments don't need to resubmit a proposal unless there has been sufficient change to merit it being considered a new experiment or test beam. We recommend emailing points of contact within the facilities for case-by-case guidence on what is "sufficient".