Work has been done to increase the debuncher aperture: Horizontal has cone from 5 to 24pi--mm-mrad and the vertical has risen from 7 to 12pi-mm-mrad. As contrast both were ~25pi-mm-mrad a few years ago and last month was 16pi-mm-mrad. The debuncher cryo was allowed to warm up to allow replacement of 2 bad cryo amplifiers. This work also let up the vacuum. Last night further work on the vertical aperture was postponed due to the slow recovery rate of the debuncher vacuum; vertical aperture will start again this afternoon. The helium purification is expected to be finished tomorrow (Thu) morning. D. McGinnis is hopeful that an increase aperture will be achieved within the next 24 hours and that the debuncher cryo system will be cool down will begin tomorrow; possibly start stacking tomorrow evening(?). Keith