[en] A program of construction of test superconducting linac with low emittance, high peak current and low energy dispersion is in course at Frascati INFN laboratories. This program is motivated by the consideration that RF superconductivity is very promising in the effort to achieve the break through in ideas and techniques that seems necessary to implement new very high energy accelerators. The linear superconducting accelerator test complex consists of : 1) 1 MeV injector at normal temperature; 2) 4 multicell superconducting cavities with an overall 4.8 m useful accelerating length; 3) recirculation channel; and 4) refrigeration and power plants. The accelerator will deliver a beam of energy between 25(49) and 36(73) MeV depending on the maximum gradient achieved in the cavities. The machine is to be assembled within two years from the date of emission of the first order. 5 references, 1 figure, and 2 tables