CAT Chat Minutes

February 16, 2001


Information and Follow-up Items

Has the XBPM and real-time feedback interference been resolved?

One problem has been found and is being corrected, but there is still an unresolved, intermittent problem. Real-time feedback is now operational, but using the XBPMs in the feedback will not be implemented until all of the problems are resolved.


User Information

The 7-day storage ring operation history (96% availability) was reviewed. An unexplained beam dump down to 10 mA was noted. Problems like this are difficult to analyze; better diagnostics tools are being investigated to better characterize these rare occurrences. An 8-hour studies period will begin Tuesday, February 20 at 8:00 a.m.

Gap-dependent beam motions were discussed. A feed-forward algorithm is being tested to measure the impact of a gap change. Glen Decker reviewed some magnetic data collected at two different gaps and discussed how a four-parameter feed-forward system would help the problem.


General Information

Bruce Glagola noted that there is a minor change being made to the Experiment Safety Approval (ESAF) forms. At the bottom of the form, the language associated with the safeguards signature has been modified to include samples (e.g., potentials biohazards) in the statement.

Bruce noted that MIS is almost finished setting up a system for users to edit their ESAFs prior to final approval. The system would even allow changes after the form has been submitted. Experimenters will have to log in to the system using a badge number. If no user badge number has been assigned yet, the system will assign a temporary.

One other change will be made to the materials tables on the form. A column for hazards with a "yes" or "no" check box will be added. Bruce will update the electronic versions of the form available on the Web.

The JHQ process is beginning for non-ANL CATs (resident users only). APS staff will be going around the ring to gather necessary data.