CAT Chat Minutes

April 11, 2005

 

Machine Stats
Listing of Statistics for Run1-2005:
Delivered Beam:   1404.57 Hours
Percentage of Scheduled Time:   98.57 %
Downtime during Period:   20.44 Hours
Mean Time between Faults (MTBF):   108.04 Hours

Machine Faults:

Fill

Reason

Downtime

# 24   04/06 08:00   To   04/11 10:05   122.08  

  Fill Ongoing             

  -0.00

Beamline Data
Beamline downtime summary by APS groups, 4/04-11/2005

DIN

Date

Beamline

Status

Duration

Group

Description

Resolution

514

04/09/05

10-ID

Open

15 min

ASD-VAC

Serious fault #70 SS1 no switch

 

Facility
Canted ID Shutters J. Quintana:

•  Air Solenoid
•  New canted IDs designed to have air solenoids in tunnel to simplify air handling.
•  Sector 24 solenoid failed, replaced with identical solenoid since that is what was on hand.
•  Solenoids with metal parts were put in to 23 and 24 during shutdown to fix problem.   21 was not done (sector has no beamline yet).
•  Limit switch springs did not have enough retention force in new design.
•  Springs were manually cut down as a temporary solution.   New springs are specified for the shutters.
•  Spring was not replaced in 21 shutter since beamline was not working.
•  Vacuum leak was suspected in Sector 24 shutter bellows.
•  Shutter was replaced with Sector 21's assembly.
•  Bellows failed after 29K cycles.
•  On 3/17 Sector 24 (i.e. 21's) shutter failed due to spring problem.