Status of Fudan Van de Graaf reviewed

The Accelerator Laboratory of Fudan University converted its 2.5 MV proton Van de Graaf to a 4 MV accelerator and the bulk of the conversion was completed in September 1979. Since then, a series of performance tests were made and the no-load voltage has reached 5 MV with the accelerator tube filled with 5 atmospheres of nitrogen gas. Because of accelerator tube problem, the particle energy failed to reach the 4 MeV target. Although a stable 3.2 MeV was once obtained during adjustment, the maximum energy available for experiments was only 2.85 MeV. The operation of the accelerator in the years since 1981 is described.