CAT Chat Minutes

November 3, 2003

 

Information and Follow-up

Users from 11ID report inability to understand and respond to PA announcement. 

C-Y Yao replied that in this case, besides the PA announcement, the MCR crew also informed the on-duty floor coordinator, who should pass the information to the beamline users affected by the reboot.

In the future, if we need to open ID gaps for certain actions, such as reboot of an IOC, the MCR crew will issue a 10-minute advance notice through the PA and Floor Coordinator. If only a few beamlines are affected, the Floor Coordinator will inform the affected users.  If a user needs more time to finish an experiment and the machine status allows, the MCR crew will accommodate.  After the action, a PA announcement will also be made. 

Concerning a question from a previous meeting about power failure / cryopumps, Bill Wesolowski is locating schematics (Oxford).  If any Users have problems with the timer, please notify him to get it resolved.

 

General

Machine Stats R. Klaffky:

Delivered beam: 657.40 hrs.
Percentage of scheduled time:  97.6%
Downtime during period:  15.66 hrs.
Mean time between faults (MTBF):  46.96 hrs.

#31 10/29 08:00 to 10/31 04:25

VM-0-4-VV01 SR valve closure

0.43 hr.

#32 10/31 040 to 11/03 08:04

Fill ongoing

75.24

 

Beamline Downtime Report:  Summary period 10/24-30/2003  

Number

Date

Time

Description

Downtime

   Group

000271

10/24/03

16:10

User lost gap control due to changes in the beamline computer system made by beamline personnel.

0:35

Beamline

000272

10/26/03

00:24

BLEPS trip requiring call-in of beamline personnel.

12:14

Beamline

000273

10/26/03

13:10

Cold Cathode trip requiring consultation with vacuum group.

0:20

Vacuum

000274

10/27/03

00:35

BLEPS trip requiring adjustment of water flows before reset.

2:40

Beamline

000275

10/29/03

08:00

Steering issue requiring consultation with machine physicist.

2:00

OPS

000276

10/29/03

08:00

Steering issue requiring consultation with machine physicist.

2:00

OPS

000278

10/30/03

10:00

Network failure interrupted beamline computer use.

0:50

AOD-IT

Additional Singlet Days During Summer Run Cycle - R. Klaffky:   The addition of six more days of singlet mode has been proposed with consolidation of all singlet days between June 9 and June 21 PUC is being contacted regarding this change.

PV Naming Convention - J. Maclean:  The effort to survey the different PV naming conventions used at the APS is well under way.  We have had responses from all but two CATS.  Thank you to all who responded.  If you have not yet responded, we would appreciate your input.

PV names useful to beamlines - Mark Rivers has provided a good starting point with a list of PVs of interest.  Gary Gunderson will be working with various APS groups to make sure the names on this list are accurate and to ensure the functions of all are documented.  The BCDA group will be responsible for putting this information on its web pages.