CAT Chat Minutes

August 8, 1997


Issues that require action and/or follow-up
1. You stated that persons under the age of 18 are not allowed on the Experiment Hall floor. We had heard that college students under the age of 18 are exempt. Is this true?

There are no global exemptions for college students. However, if you have underage college students who will need to work on the Experiment Hall floor, please notify the User Office, and we will provide a letter of approval for the exemption.

2. During user operation there are floor coordinators around to monitor that status of the equipment on the floor when the beamlines are unattended. Is anyone monitoring the floor during shutdowns and ASD studies periods?

The ASD operations crews are on-shift during all of the periods. They perform regular walkthroughs of the APS facility. They have a copy of the CAT off-normal contact list and will call the designated personnel if no floor coordinator is present. It is extremely important that all CATs keep the call-in list current. Notify C. Zidel or your floor coordinator if any changes need to be made.

Information/Follow-up items
APS Operational Status Update:  The user run will begin Tuesday, August 19. It will be six weeks long. A shielding verification schedule is being prepared and will be made available on the WEB next week. Shielding verification will be limited to Tuesdays and Thursdays. During the user run, ASD studies will be scheduled for each Monday. The last three days of the run are still set aside for special operating conditions. If you have any special requests, please notify Tony Rauchas no later than Friday, August 15. The operating conditions and schedule for the last three days will be finalized by the start of the user run.

The latest version of the experiment safety review form will be made available next week. If you have any questions, contact Steve Davey or Bruce Glagola.

We would like to invite all users to attend the APS family picnic, which will be on Friday, August 22. You can purchase tickets through the User Office for $5.00 per person before August 15, after that they will be $7.00 per person. Technicians of XFD and ASD will be playing softball against each other at the picnic.

Numerous PV names are being modified, and the naming conventions being standardized. Old PV's, starting with "SRI", have already been taken off line as of August 5. The documentation on the WEB will be updated, and a CAT NET notice will be sent when this is done.

We are requesting that the CATs open their insertion device gaps when they are gone for an extended period of time. This will help in reducing the radiation doses on the ID magnets and minimize unnecessary ID closures after beam dumps.

We are planning to implement a gap dead band setting in the ID control software. This will reduce the time that the device takes to reach the final position or will minimize gap motions within the dead band. Suggestions regarding this modification are to be addressed to Mohan Ramanathan (