T2 Profile Monitor actuation was tested today from the control room and all is working properly.  The position (IN / OUT) also displays correctly.
To my knowledge nobody has looked at this system, so it is a mystery why it suddenly started working.  This e-log will be updated if any explanation is found.

Actuation of the M20 beam blocker and T1 Profile Monitor were also tested and are working as expected.

The T2 monolith may now be covered.

Update:  A blown fuse in the control racks was replaced yesterday by Dave Cameron, which explains the change.

 The T1 cooling package was started around 2pm today.  There was no change to the T1 volume vacuum during startup.

The package was inspected for water leaks: None found.

The demin loop flow (Q2) was adjusted to ~1.5gpm.

The target out water resistivity has reached 12 mega-ohm-centimeters after approximately 2.5 hours, indicating that the resin does not need to be changed.

The T2-MK2 target (currently installed in the beamline) was moved from position 0 to position 4 (10cm Be) using the portable control box.
The T2 cooling package was started after moving the ladder.

There was no change in the BL1A vacuum.  The T2 expansion tank water level dropped slightly, as expected (around 1/16"), and was refilled to ~1/4" above the high level sensor top nut.

30 micro-amps of beam was put down BL1A and the T2 target and cooling system appear to be functioning normally.

The T2 target was moved from Position 4 to Position 0 at 11:15am so the profile monitor could be used during the development shift.

The T2 cooling package tripped regularly throughout the day on high flow while in position 0.

At 10:45pm the T2 target was returned to the previous running position: approximately 2mm above the nominal position 4 elevation (pot ratio fluctuating slightly around 0.799) so that beam could be run overnight.

Release of the Remote Handling Hot Cell Lab active sump water was completed today by Hua Yang.  During the procedure fields of up to 0.50 micro Sv/hr were measured around the newly installed filter housing.  After completion the filter was removed and replaced.  The filter measured 450cpm on the RM-14 monitor and ~5000cpm on the 44-2 monitor (both on contact).  RPG has been notified and the filter has been bagged, labeled, and left for pick-up by RPG.

The BL1A amplified air system has been shut off, and will remain off until required for BL1A start-up in Spring 2015 (the lower of the two units was in use, with the upper unit on standby as a spare).

Pumping was restored to 1A today by Vacuum Group and the beam line returned to normal vacuum levels.  Both cooling packages were started with no change in vacuum (no water leaks inside the vacuum volume).  The T2 package was left on for approximately 1 minute, and then the expansion tank level was checked.  Approximately 1cm of water was lost.  The T2 package was turned off, and will remain off until the package can be inspected later this week after block removal.  The T1 package will be left running until T1 MRO work begins.

The following tasks have been performed at T1:

- T1 monolith painted using grey two part epoxy paint
- Video inspection taken while package running. Small leak from both valves on H.E. secondary side (video on Isaac's PC, too large to upload)
- Cooling package sampled and drained, drain valve closed
- All reservoir o-rings changed
- All Hansen fitting o-rings changed (4x #6 size, 2x #4 size)
- All three cuno filters and filter housing o-rings changed (used filters 2mSv/hr on contact, temporarily stored on blocks by T1 package)
- Failed T1 P1 (inlet) pressure transducer replaced
- Supply and return valves for T1 CuALCW closed in tunnel to allow leaking valves to be replaced

- New resin can installed at T1 (this note added oct 15 2015 - was previously undocumented)
 

The following tasks have been performed at T2:

- Video inspection taken while package running. Documented leaks mentioned in E-Log #133 (video on Isaac's PC, too large to upload)
- Cooling package sampled and drained, drain valve closed

RPG has analyzed the water samples and given approval for water from both packages to be released.

The T1-MK2 target was transferred from the beam line to the storage pit in hole #5 using the transfer flask.  A maximum field of 7.2mSv/hr was measured at 0.5 meters from the target.  A video was taken while the target was lifted from the monolith and can be found on Isaac's PC (too large to upload).

The blocks to the west and east side of the T1 monolith (level with the monolith) were swiped by Danka Krsmanovic and no contamination was found.  These blocks will therefore not be painted this shutdown.

The three active filters removed from the T1 cooling package have been labelled and stored in the area north of the BL1A blocks boot box with permission from Danka.  The bag with the filters is 100microSv/hr at 0.5m and 2mSv/hr on contact.

The active item discovered on January 9, 2015 outside the BL1A bootbox has been moved to the Meson Hall east hot cell for storage.  The item was analyzed by RPG and the radiation was found to be coming from activated metal contained by dried paint in the bottom of a plastic container.  The solidified paint puck was removed from the container which is not active.  The item is approximately 20microSv/hr at 0.5m, and 1.3mSv/hr on contact.

- The T1-MK1 target was moved from the hot cell to storage pit hole #3 (ready as T1 spare)

- The T2-MK2 target was moved from the beam line to the hot cell for inspection and in preparation for T2/M9 work this shutdown
- The target measured up to 90mSv/hr at approximately 1m while being lifted
- Beam spots on the target will be measured and recorded to determine ideal offset (if any) for next running period
- A 10mSv/hr collimated field was measured coming from the T2 monolith hole
- An aluminum blank-off was installed over the hole followed by a stack of circular steel discs for shielding which reduced the max field in the area to 700uSv/hr

Elevation measurements of the T2-MK2 target were taken in the hot cell to confirm previous records in preparation for the T2 Protect Monitor adjustment that will take place later this shutdown.  Potentiometer readings were also checked for ladder position 2mm above and below nominal in case we decide to run the target in an offset position again.

Entrance Side:

Ladder moved until potentiometer at 16.19kΩ (nominal position 4)
- Measurement on tape: 1838.7mm

At elevation 1836.7mm: 16.04kΩ
At elevation 1840.7mm: 16.27kΩ

Exit Side:

Ladder moved until potentiometer at 16.19kΩ
- Measurement on tape: 1837.9mm

At elevation 1835.9mm: 16.04kΩ
At elevation 1839.9mm: 16.29kΩ

The elevation measurements at nominal position agree with those taken in May 2014.
The T2-MK2 target is now ready to be returned to the beam line after completion of the M9-T2 work.

Keith C. Ng and Isaac Earle both received .02mSv dose during this procedure.

 The T2-MK2 target was moved from the hot cell to the beam line. The T2 Protect Monitor was moved from the beam line to the hot cell.  The T2-MK2 assembly measured 136mSv/hr at 0.5m, and the protect monitor was 8mSv/hr.  Total dose incurred by Isaac Earle:  0.18mSv.  No dose to other workers

 The T1-MK2 target was transported from the storage pit to the beamline.  The target measured approximately 10mSv/hr at 0.5m.  All target services were hooked up and the cooling package was started (no change in T1 vacuum).

 The lower air amplifier has been started, and air supplied to the T1 and T2 areas by opening the appropriate ball valves beneath the amplifier.  The amplifier is cycling normally and the barrels are cool to the touch (indicating no significant air leaks).

Actuation of both profile monitors was checked from the control room.  Both reach the in and out limits as expected, with no change in vacuum level in the respective volumes.

Both cooling packages are running steadily with the targets in Position 0.  

The demin flow (Q2) for both was tuned to approximately 1.5USgpm.  

A defeat was applied to T2Q1 flow to prevent high level nuisance trips.  This will remain in effect for the 2015 running period.

T2P1 Sensor (water inlet pressure) has a noisy signal.  This was not improved by replacing the sensor.  It is not expected to cause issues during operation and will be addressed (if still present) after the 2016 upgrade to PLC/EPICS control.

The expansion tank for both packages was topped up to approximately 1/4" above the top nut of the warning level sensor.

An electrical check has been completed for the T1 & T2 Profile and Protect Monitors by Dave Cameron and Mike Russell.  They report that all results look normal.

T2-MK2 target information sheet, beam spot measurements, and elevations were updated and delivered to Operations. PDF copy attached.

No work was done to T1-MK2 (placed in storage pit for 2015 shutdown duration to lower fields), so the sheets will not be updated.

Replacement of the BL1A blocks was completed yesterday (May 8, 2015) in preparation for first beam down 1A on May 12th.  The attached PDF shows a photograph of the current arrangement, and also the block arrangement at the beginning of the 2014 running period for comparison.

Grant moved the T1 and T2 targets from position 0 to position 4 this evening at around 9pm.

The position 4 selector button on the T1 rack was not working.  The manual control box had to be used with the adapter cable and military connectors for both T1 and T2 to achieve position 4 on both targets.