2019-12-12

Foil Experiment

Repeated the dipole on and off runs from the 5 December. Identical experiment setup except for a new amplifier being used as it had failed since last week. The upstream foil has begun to break apart, likely due to excessive vibrations when being moved in and out of the beamline. This will likely allow for some H- leakage, besides the H- that already travels around the foil. The main point of these runs is to check the drift of the beam intensity which is still possible. The vacuum was approximately one order better than last week at about 9.5 x 10^-7 Pa.