ISA meeting

Week 15, April 8, 1997.

Status of the ring: The ring is still running very well. We routinely have 190 to 200 mA of accelerated current, the maximum so far being 216 mA. Beam lifetime at high currents are 12 to 15 hrs, rising to >20 hrs near 100 mA. We still have some frequency instabilities in the Microtron, but with our new remote frequency adjustment, it is not a big problem any more.

The Undulator is really working well, giving a nice higntensity beam. FF, JvE et al are currently investigating it in more detail. DF and coworkers will connect their setup tomorrow morning, in order to get results as quickly as possible.

The X-Ray microscope had a minor leak in the beam shutter Friday. This is now fixed, and it will be ready again later today.
Recently, when Steven Spector from Stony Brook visited RM, the resolution was measured to be 30 nm, with system drift at around 25 nm/min. This is better than the design value of 50 nm resolution, and places the Aarhus microscope among the best in the world!

8/4 1997 NH+SPM