1999年是HI-13加速器投入运行以来运行状况最好的一年,开机时间和供束时间分别超过5000h和4500h,达到了同类加速器的国际先进水平。1　运行1999年HI-13串列加速器累计供束时间为4578h,实验用户近40个,其中用于基础研究束流时间为4114h,辐照用束464h,输电梯运行时间为5132h,开机 The year of 1999 was the best year since the HI-13 accelerator was put into operation. The startup time and the beaming time exceeded 5000h and 4500h respectively, reaching the international advanced level of similar accelerators. 1 The 1999 HI-13 Tandem Accelerator has a total supply time of 4578h and nearly 40 experimental users, of which the beam time for basic research is 4114h, the irradiation beam is 464h, the elevator operation time is 5132h,