[en] As requested, this report focuses on the physics research to be done at the SSC and provides advice on the range of useful machine parameters in order to complete the design phase of the facility. The Subpanel concludes that the SSC Laboratory, in its current proposal, has chosen wisely among the alternatives and that the project should move forward expeditiously. We feel strongly about the need for a flexible and reliable facility at 20 TeV beam energy for decades to come, and, therefore, we believe it would be very unwise to redesign the machine with a reduced circumference