The Cyclotron Lid Down was successfully completed today on Work Permit C2014-03-03-6.
The system only tripped twice on the way down. Both trips were at Station 9, at the following Master Syncro readings: 43194, 39198.
Oil was observed on the Jack #1 platform, but it was determined that it was coming from the crane when it's parked in the beam-on position, and not actually from the elevating system.
The final counter readings after the lower limit was reached were recorded:
Final Lid-Down counter readings
| Station |
Reading |
| 1 |
32 |
| 2 |
33 |
| 3 |
28 |
| 4 |
32 |
| 5 |
32 |
| 6 |
32 |
| 7 |
33 |
| 8 |
30 |
| 9 |
33 |
| 10 |
35 |
| 11 |
34 |
| 12 |
32 |
The Master Syncro was recorded at 28. All station yoke gaps were very loose on the .25" shim, which makes sense, as they are about 70 thou lower than the starting position before lid-up this year (100 counts at each station).
The system was NOT re-indexed. The decision was made to wait until lid-up next year to re-index. The lit should be raised until the Master is at about 100 counts, then the yoke gaps checked and adjusted as required.
Regards,
Grant |