The group from NBI, Copenhagen will come during the last 4-5 weeks of this electron run to use our extracted electron beam. Before then, we will test the septum at high current, but this should not affect other users.
The SGM II monochromator now shows better than 1 meV resolution, after a rotary pump which introduced vibrations in the system was moved. The monochromator is thus fully up to specs.
The SGM I monochromator suffers from Carbon and Oxygen on the optics, which gives problems above the absorption edges of these materials. Cleaning the mirrors might be attempted later. Apart from these problems, the mono behaves as predicted by calculations, also for the high-energy grating.
Onduline is using the undulator this week. It will be attempted to remove 2nd order radiation by inserting a thin Mg-foil in the beam.
The EBIS ion source will be connected to the injection beamline next week, after which outgassing of the electron gun can begin.
Beam current values read from the control system may not always be updated correctly. TW is working on the problem.
The next ion run is being planned. A tentative schedule has been made by LHA. It will be discussed at a meeting in the near future, after which it will be published on our web pages.
ELISA is running clusters and fullerenes. A laser is being set up to heat the ions for subsequent study of their decay properties.
9/3 1999 / nh+spm