The following tasks were performed during the 2012 September Shutdown:

- Both targets moved to position 0 in preparation for testing of profile monitors (portable ladder control box was used for controlling ladder motors)
- T2 monitor OK; T1 monitor would not hit 'IN' limit
- The T2 branch of the amplified air system was closed, now the T1 monitor hits the 'IN' limit properly  (conclusion: a known leak in T2 section of amplified air is causing a drop in pressure of the system which prevents the T1 profile monitor from actuating properly)

- Both cooling packages were inspected and photographed (nothing abnormal observed)
- Both cooling packages drained, and water samples delivered to RPG
- Expansion tank level sensors tested at both packages: All OK
- All Hansen quick connect o-rings replaced at T1 package
- 90 micron filter on demin line replaced at T1 (caused ~0.2gpm increase of Q2 flow)
- Both packages refilled and restarted (operating normally)
- Q2 flow on both packages adjusted to ~1.45gpm

- The cause of the amplified air leak was discovered to be a cracked air dryer located in the BL1A service tunnel (photo attached)
- The air dryer was replaced which stopped the leak, resulting in a significant decrease in air amplifier cycle period and an increase in air amplifier output pressure from ~110 to 120psi

- Movement of the T1 ladder caused a spike in beam line vacuum;  After further testing it was concluded that the T1 target was leaking water
- T1-MK2 target was transferred from the beam line to the hot cell; T1-MK1 target was transferred from the storage pit to the beam line
- T1-MK1 profile and protect monitor electronics checked by Bill Rawnsley: Both OK
- Initially a leak was suspected at T1, but it was later discovered that the volume was just pumping down slowly due to water in the beam line from the T1-MK2 leak
- T1 profile monitor was not actuating properly;  It was found to be caused by a short to ground on one of the profile monitor limit switch wires.  The faulty wire was replaced by Probes Group
- T1 and T2 profile monitors tested.  Both actuating properly.
- New target ladder information sheet delivered to ops

- The leak in T1-MK2 was found to be coming from the center of the beam spot on the entry side of the position 3 target (photo attached, but not great quality).  This is a 12mm Be target, and has been running in beam position since initial start-up this spring.