University of Washington Lab Report to SNEAP, 1999

OAK-B135 University of Washington Lab Report to SNEAP, 1999. The NPL tandem Van de Graaff accelerator chains ran 1869 hours between 9/1/98 and 8/31/99. The DEIS ran 356 hours and the SpIS ran 667. There were 28 experiment-days in which the LINAC and tandem were used together and seven days when the tandem was used, with one of the external ion sources, as a tandem. Four of these were with light ions and three with heavy ions. There were 68 days of Tandem Terminal Ion Source (TIS) development or repair, and 46 days of TIS installation or removal or changing TIS ion species. The TIS/tandem was used a total of 70 days to deliver p, d,(sup 3)He, or(sup 4)He beams for use by an experimenter. There were 47 experiment-days during which the injector deck was used to generate C(sub 60) or LiF(sub 3) clusters, which were then investigated without further acceleration. They had 25 tank openings over the year. There were three scheduled openings for the installation or removal of the TIS, and seven to change the TIS ion species. There were 10 openings for(sup 4)He ion source and column resistor gradient development. There were four openings for various repairs other than ion source, and one to replace the LE grid, which was found undamaged after all