Moved Kaon Target from storage pit to remote handling hot cell using flask as training exercise.  Safety surveyor scanned storage pit area (wide flanges: clean,  pit floor: 50cpm).  Returned flask to hot cell lab floor and covered storage pit.

Replaced T1-MK1 target ladder with the new ladder design which has an integrated upper slide plate (2 less sealing locations) and no c-seal grooves.  C-seals replaced with aliuminum delta seals.Transfered all target cassettes to new ladder in the same positions.  Performed helium leak check at interface with bellows flanges and all cassette locations.  No leaks detected.

Target still requires installation of new protect monitor.  Beam-spot and elevations procedure must still be performed.

 T1-MK1 target transferred from hot cell to storage pit position #3 to free up the hot cell in preparation for shut-down activities.

Current device locations in storage pit:

Pos 1: TNF Resin Can
Pos 2:    empty
Pos 3:  T1-MK1 Target
Pos 4:  T2-MK1 Target
Pos 5:     empty 
Pos 6:     empty 
Pos 7:     empty 
Pos 8:     empty 
Pos 9:     empty 
Pos 10:   empty 
Pos 11:   empty 
Pos 12:  Liquid Deuterium Target
Pos 13:  Kaon Target
 

Drained T2 cooling package water, collected sample and delivered to RPG.  Swapped resin can, refilled, and restarted cooling package.

After 6 hours can inlet at 10.3MΩ *cm, can outlet at 10.5MΩ*cm electrical resistivity.

 Defeated T1 and T2 cooling package vacuum interlocks at 1-C panel on South mezzanine in Meson Hall to allow cooling packages to continue running after beamlines are vented.

Notified operations.

Uncovered T2 monolith and transferred M20BB to hot cell using flask.

Field at 0.5m from beam blocker while being lifted with flask: 21,700μSv/hr (using pole monitor) 

Field above hole after removing M20BB: 9000μSv/hr

 Replaced M20 beam blocker vacuum seal o-rings.  Old o-rings were noticeably harder, but not brittle or cracked.  Applied "Haskel Dry Air Seal" lubricant to air cylinder shafts and "Apiezon M Grease" to vacuum seal o-rings and main shaft.  Took approximately 1 full days work.  Total dose: 0.08mSv.

M9 beam blocker returned to beam line.

T2 target disconnected, picked up using flask, and returned to beam line as training exercise.
Field @ 50cm from T2 target during removal:  ~90,000μSv/hr

Resin can flask with new resin moved from hot cell lab to T1 cooling package area.

Replaced all o-rings and filters on the T1 cooling package.  Replaced resin can.  Refilled package and restarted. 
Can inlet resistivity at 9.8MΩ *cm, outlet at 11.5MΩ*cm after approximately 3.5 hours.

(Collimator A filter and modified filter housing to be installed at a later date)

 Graham Waters has activated the appropriate target ladder position look-up tables for the T1-MK1 target which was installed in the beam line yesterday.

 Diagnostics group completed their "blip" signal response tests on the T1 and T2 profile and protect monitors.  A small amount of leakage was observed on the T2 profile monitor, but was not thought to be a significant concern.  All other results were normal.

 In preparation for extended periods of the T2 volume being vented during the M20 repair, the T2 water package was shut-off, the water lines were disconnected from the target, and the cooling water was removed from the target using compressed air.

 While leak checking components in the M20 front end on May 25th, the top of the T2 monolith was also checked by flooding the top of the monolith with helium while it was covered with plastic sheeting.  There was no response on the Varian leak detector indicating no significant leaks from the flange seals, shaft seals, and seals for upper services on the T2 target, T2 protect monitor, M9BB, M20BB, and M8BB/Col.A

A full rebuild of the upper air amplifier was completed.  New anodized aluminum barrels were installed (replacing the old brass design), as well as new pilot valves, piston seals, bearings, and o-rings.  

The amplifier is operating smoothly with a cycle period of 25.6 seconds, compared to 14.8s before rebuild (based on 8 cycle measurents at 110psi output with beam blockers lowered).  

The lower air amplifier currently has a cycle period of 24.8 seconds under the same conditions (rebuilt in 2010).

 The target water outlet flow transducers on the T1 and T2 cooling packages were serviced (new shaft, paddle wheel, & o-ring) to address a noisy signal.  The service corrected the noisy signal.  Additionally, it appears the worn parts were causing the transducers to read high, as both dropped approximately 1 gallon/minute after the service.  Both transducers would occasionally trip the high flow warning (8.5gpm), and should now no longer do so.

A plot of the water outlet flows before and after the service is attached.  Cyclotron fault report #6086 was returned.

 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.

- T1-MK2 target moved from storage pit to hot cell
- Removed unused proximity sensor and associated wiring (stored in tool-port boot box cabinet)
- Tested profile monitor actuation: seems stiff, but moves ok;  start travel @ 30psi, fully in position @ 50psi
- Replaced vacuum flange o-rings: Plug (#202), Feed-through port 1 (#222), Water supply tubes 1 and 2 (#208)
- Replaced all nylon ferrules for water supply tubes
- Leak checked water supply tubes: leak tight
- Replaced rusty nuts on profile monitor lift plate
- Profile monitor limit switch wiring replaced (D. Cameron)
- Heat shrink applied over motor wires (D. Cameron)
- Position micro-switch connectors replaced (D. Cameron)
- All wiring wrapped with protective coil and secured with PEEK zap-straps (D. Cameron)
- All limit and position switches tested: ok
- Profile monitor bellows straightened (noticed rotation of base seems stiff)
- T1-MK2 target moved to storage pit location #3
- T2-MK1 target moved from storage pit to hot cell for re-wiring

 

- T2-MK1 target transported from storage pit to hot cell
- Proximity sensor removed
- Target lift "T" removed, painted, relabeled
- Replaced flange o-rings: Plug (#202), Feed through port 1 (#222), Feed through port 2 (#222), Feed through port 3 (#213), Water supply tubes 1 and 2 (#208)
- Replaced all nylon Swagelok ferrules
- Leak checked water tubes: OK
- All wiring above vacuum flange replaced, secured, inspected  (D. Cameron)
- Damaged lower MS connectors replaced  (D. Cameron)
- Discovered motor wire insulation degrading  (D. Cameron)
- Motor replaced and rewired
- Motor, position micro switches, and profile monitor micro switches tested: ALL OK
- Tested profile monitor actuation: Smooth (IN: start motion @ 5psi, fully actuated @ 20psi)
- Target lift "T" installed
- Feed through port cap #2 replaced with TBP0936 (old cap was makeshift part using weird gunk sealant)
- Upper and lower parts of target photographed
- Target ladder moved to position 0
- Target ready for use.  Will be transferred to storage pit hole #4

* Approximately 50cpm found on 44-2 monitor from wet wipe used to clean blue flanges surrounding hot cell entrance on HC roof
 

Friday Jan 25:
- Both sides of heat exchanger drained, disconnected, and capped
- Heat exchanger transported to warm cell (field from H.E. approximately 15µSv/hr at 0.5m)

Monday Jan 28:
- Both sides of heat exchanger flushed with city water
- Heat exchanger lifted and tilted to drain as much water as possible 

The T2-MK2 target was transported from the beam line to the RH hot cell.  The profile monitor was secured in the 'in' position before lifting the target, as it is better protected in this configuration.  This procedure will be used for all future target moves to reduce the risk of damage to the monitor.

The field on the target while lifting was approximately 5mSv/hr at 2m.  A field of 12mSv/hr was measured directly above the T2 target hole on the monolith.  A shield plug was installed into the hole which reduced the field to 500µSv/hr.

A section of the "montior" cable was found to have damaged insulation (photo attached).  Fortunately this cable terminates at the cooling package, so only a short section needs to be replaced.