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