[en] Protons are accumulated into the low-energy booster of the SSC by utilizing H/sup /minus// → H⁺ conversion in a 225-μg/cm² carbon stripping foil. Synchronous injection is performed for 26 turns into stationary rf buckets, thereby allowing operation with variable bunch spacing. By injecting the beam offset in x and y we obtain the required rms normalized transverse emittance area of 0.75 π mm-mr. Similarly the required rms longitudinal emittance area of 1.75π /times/ 10/sup /minus/3/ eVs is obtained by injecting single linac micropulses, centered at /phi/ = 0, and dp/p = +0.12%, into each 49.9-MHz rf bucket formed with an rf voltage of 350 kV. The transverse space-charge tune shift is /minus/0.17 for 10¹⁰ protons/bunch accumulated at 600 MeV. 1 ref., 5 figs., 1 tab