 Wednesday, April 20, 2016, 10:01, Isaac Earle, Standard Operation, Target 1, Target, T1/T2 Monitor Electrical Check Complete
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Mike Russell from Diagnostics Group has completed an electrical check on the T1 and T2 profile and protect monitors. He reports that both profile
monitors look fine. The T1 protect monitor looks fine except for a weak or missing signal from the halo monitor. The T2 protect monitor looks
fine. |
Friday, April 15, 2016, 14:54, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 Target Changes & Return to Beamline 
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On April 11th the T2-MK2 target was flushed with water, then overnight with air at 5psi supply pressure. The target ladder was in Position 0 for
this procedure.
On April 12th the target was pumped using a cold trap and the Varian leak detector for approximately 2 hours. |
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Monday, April 11, 2016, 13:54, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 Target Transported from BL to HC
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The T2-MK2 target was transported from the beam line to the hot cell using the transfer flask. The target was measured to be 120mSv/hr at 0.5m.
The steel shielding plug was installed in the T2 target hole to reduce upwards shine.
New beryllium target cassettes will be installed on the target ladder before it is returned to the beam line. |
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Monday, April 11, 2016, 13:51, Isaac Earle, Development, Other, Other, Target Transfer Flask Hoist Hook Lower Limit Adjusted
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The lower limit of the flask hoist hook has been adjusted. The travelling nut for the lower limit was rotated 3 notches closer to the upper
limit travelling nut which resulted in an additional 1-3/8" travel of the hook at the lower limit. The door hinges and door cable pulleys were
lubricated with WD-40 and actuation of the doors was tested several times. |
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Thursday, April 07, 2016, 16:44, Isaac Earle, Development, Other, Controls, T1/T2 Controls "Assembly Tests" Completed
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The T1/T2 Control System "Assembly Tests" (Document 118467 Release #1, Section 5) have been completed. The expected result, as
written in the document, occurred for every test. The T2 Shield Thermocouple #3 (B1A:T2:TC3SHLD:RDTEMP) showed slightly erratic behaviour when
viewing archived data. It is uncertain at this point whether or not it will need to be bypassed in the B1A:T2:TGTRDY interlock. |
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Thursday, March 31, 2016, 11:48, Isaac Earle, Standard Operation, Target 1, Target, T1 & T2 Beryllium Target Manufacturing Complete
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Manufacturing of a new batch of T1 and T2 beryllium targets has been completed.
The job was completed under Machine Shop Work Order #41527. Eleven 12mm T1 targets (TBP1683) and seven 10cm T2 targets (TBP1691) were completed
(exhausting all stock of the leftover EDM'd target housings). The target window profiles (TBP1695) were laser cut at an outside shop for greater |
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Thursday, March 24, 2016, 15:38, Isaac Earle, Development, Target 1, Target, T1/T2 Beryllium Target Test Jig Fabrication Complete
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Fabrication of the T1/T2 beryllium target testing jig (TBP1721) was completed today by Dan MacDonald. With a target installed across the test ports,
the inside volume pressurized with air to 103psi, and both ball valves closed, there was no noticeable drop in pressure over a 16 hour period. This
result was deemed satisfactory for use of the jig for hydrostatic testing of new targets. |
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Thursday, March 24, 2016, 14:46, Isaac Earle, Other, Other, Other, TNF / 500MeV Resin Cans Removed from Storage Pit #1
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Three used TNF / 500MeV system cooling system resin cans were removed from the Meson Hall target storage pit (two from Hole #1, one which was stored
below block #1).
Two new active cans will be returned to Hole #1 after the TNF resin is changed in a few weeks time. |
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Wednesday, March 16, 2016, 16:50, Isaac Earle, Development, Target 2, Controls, Preliminary Testing of T2 Control System Complete
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Preliminary testing of the new PLC control system and EPICS interface was completed today for
the T2 target, T2 cooling package, T2 collimators, and T1 thermocouples. All systems behaved as specified.
Review of the commissioning plan is currently underway. |
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Monday, March 07, 2016, 18:22, Isaac Earle, Development, Target 1, Controls, Preliminary Testing of T1 Control System Complete
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Preliminary testing of the new PLC control system and EPICS interface was completed today for the T1 target, T1 cooling package, and T1 collimator.
All systems behaved as specified. This test did not include testing of any T1 thermocouples which will be included as part of the T2 test program
to follow. This is not considered system commissioning, which will follow after all preliminary testing is complete and the commissioning plan document |
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Wednesday, February 24, 2016, 13:03, Isaac Earle, Repair, Other, Other, Target Flask 2-Ton Hoist Chain Twist Corrected
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A 1/2 turn twist in the target flask hoist chain has been corrected to address a deficiency observed by inspectors by Gordon Crane. This
was accomplished by first holding the flask door yoke at the top position using rope slings, then lowering the hook block spider approximately 6",
then lifting the stationary end of the hoist chain approximately 2" using the Meson Hall main crane to make the top of the chain slack. |
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Wednesday, February 03, 2016, 17:35, Isaac Earle, Standard Operation, Target 2, Cooling, T2 MRO Work
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The following work was performed at the T2 cooling package and target between Jan 25 - Feb 3, 2016:
- Cuno water filters removed (2), and new filters installed
- Target water solenoid, H.E. secondary side solenoid, Collimator A solenoid, and Collimator B solenoids removed and replaced with new 24V DC versions |
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Monday, January 25, 2016, 16:54, Isaac Earle, Maintenance, Target 1, Cooling, T1 MRO Work
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The following work was performed at the T1 cooling package and target between January 18-21, 2016:
- Cuno water filters removed (3), and new filters installed
- Target water solenoid, H.E. secondary side solenoid, and Collimator A solenoids removed and replaced with new 24V DC versions |
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Monday, January 18, 2016, 17:19, Isaac Earle, Standard Operation, Target 1, Cooling, T1 & T2 Packages Drained; BL1A Holding Tank Released
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The T1 and T2 cooling packages were drained to the BL1A holding tank on Jan 8 2016. The volumes were 100L and 80L respectively. Before
starting there was 350L of water in the holding tank from the 500MeV system which Steve Sapriken drained in September 2015. The T1 and T2 systems
were sampled and delivered to RPG. After receiving permission from RPG to release all 3 portions of water it was pumped into the city sewer on Jan |
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Thursday, December 17, 2015, 13:31, Grant Minor, Development, Other, Target, T1/T2 Target Cassette - window / end cap manufacturing change (WO 41527)
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Isaac Earle has recently been managing the fabrication of some new Be target cassettes for the T1 / T2 Meson Hall target ladders (WO 41527).
The machine shop has outsourced the cassette tubes to an external shop for wire EDM cutting, as it produces a much more repeatable and consistent |
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Thursday, November 05, 2015, 17:07, Isaac Earle, Repair, Target 2, Target, T2-MK1 Profile Monitor Repair and Pos'n 3 Target Removal 8x
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The following work was performed on the T2-MK1 target. The profile monitor and monitor cage on this target were damaged in January 2013, See E-Log
#68
Oct 23: |
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Tuesday, October 13, 2015, 10:52, Isaac Earle, Standard Operation, Target 1, Target, T1 & T2 Target Ladder Moves
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The T1 and T2 targets were both moved from Position 0 to Position 4 at approximately 2:30am on Saturday October 10th using the portable control
box. Operations had tried to move the T1 target to position 4 using the old control system but for unknown reasons it would move to any position
except position 4 and the portable control box had to be used. The portable control box should continue to be used for T1 and T2 target moves until |
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Friday, October 09, 2015, 15:52, Isaac Earle, Repair, Target 1, Target, T1-MK2 Protect Monitor Replacement and Inspection 12x
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When the damage to the T2 Protect Monitor was found to be caused by flying debris from a vacuum spike (see e-log #179), it was decided that the T1 Protect
Monitor should also be replaced.
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Friday, October 09, 2015, 15:18, Isaac Earle, Repair, Target 2, Target, T2-MK2 Check at Hot Cell and Motor Drive Cable Replacement 7x
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While the T2 monolith was uncovered for T2 Protect repair (see previous e-log), it was decided that the T2 target should be moved to the hot cell to
address issues discovered last week with target ladder movement (see e-log #175)
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Friday, October 09, 2015, 14:56, Isaac Earle, Repair, Target 2, Other, T2 Protect Monitor Replacement 9x
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On Monday Oct 5th a decision was made to uncover and remove the T2 Protect Monitor due to faulty readings. The monitor had been behaving
strangely since the September shutdown, and had been getting worse over time.
- Blocks were removed over T2 starting Monday afternoon. It is necessary to remove the narrow 12' block and two 6' blocks west of the T2 |
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