T2.4 Performance
Test Running in R78
Timeline
• T2.4 installed in R76 09-11-2010• First inspection on 16-11-2010 after 200k
pulses• Little or no wear/dust seen• Target restarted and run for another 400k• 2nd inspection 23-11-2010• Total pulses at inspection 615k
1st inspection – Top Bearing
1st inspection – Top Shaft
1st inspection bottom of shaft
No material visible in this region
Dust Catcher
T2.4 2nd Inspection – Top Bearing
Top Bearing close up
Small amount of Material on side of flat
Top Shaft wear surface
Smudge of material on weararea of shaft
Bottom Shaft
Dust Catcher
No material visible in this region
Odd deposit on top of Stator?
Run 2 Minimum PositionSome changes seenMin BCD has driftedupwards over time.
Pulse to pulse Variability approx. 0.8mmstill well within what is acceptable for MICE
Thanks to Ed for new DAQ plots
Run 2 AccelerationAcceleration is flat.Variability acceptable.
Note that we think weunderstand difference between old and new DAQacceleration values.
Comments
• No significant wear/dust after 600k pulses• No new wear seen on 2nd inspection• Was wear seen on 16th “bedding in” ?• Next inspection on 31-11-2010• Should be over 1 million pulses on clock