ISA meeting

Week 18, April 28, 1998.


Status of the ring: The changeover to ion operation is going as scheduled. The laser section and the cavity are in place, everything has been baked, and the vacuum is good (average 2.7*10-11 torr). There may be a small leak at corner 1. This will be looked at and fixed if necessary. On the extensions in corner one and two, there are windows and a detector waiting to be mounted. The detector will be mounted and baked this week.
The separator is ready, and SL and JSN are currently getting it started. It would be nice to be able to try to accelerate a beam with the new control system, before we go back to the old on Thursday.

The Microtron now has cooling in the transformer tank, and has been tested at 12½ Hz this morning. The test went well, and everything stays cool in the tank.

The EBIS source has been connected to the separator high voltage, and an attempt was made last week to inject a beam, 'cook' it in the EBIS and extract it. The test was not successful, and we will now proceed in a more systematic way. One reason we are having difficulties is the lack of focusing and directional control in the temporary beamline used for these tests.

Spring cleaning is now taking place in the ring hall. Recently, dust has become a problem in the hall, so now the ring is being washed and vacuumed. It really makes a difference to remove 8 years of dust! Users are kindly requested to clean the equipment and floor at their own beamline. For details, contact KI or SPM.

The cooling water stop which was scheduled for tomorrow has been postponed because of the current strike.

The vacuum interlock system for the new undulator beamlines is now being made. It will consist of the same modules as those made for the ring, with push-button operation on a panel placed centrally for all three beamlines. The system will in addition be remote controlled from the beamline computers.

28/4 1998 NH+SPM