 Friday, June 08, 2012, 16:52, Isaac Earle, Repair, Target 1, Target, Broken Manipulator Tape Update
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The broken tape on the west side hot cell manipulator was found to be one of two "Z motion slave tapes". The manipulator can still
function normally with only one, however the remaining tape will see twice the load as usual. It was decided that repair of the manipulator may be
delayed until after the T1-MK2 target repair job is complete. Lifting of heavy objects using the west side manipulator will be avoided until after |
Wednesday, January 18, 2012, 12:01, Isaac Earle, Repair, Target 2, Target, Broken M20BB Bearing Removed, New Design Complete 
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The broken M20 beam blocker plastic shaft bearing was removed. Measurements of the bearing as well as the shielding disc (for which drawings
can't be found) were taken inside the hot cell and a brass replacement bearing has been designed based on these measurements.
Photos of the removed bearing, measured dimensions of bearing and shielding disc, and a PDF drawing of the new design are attached. |
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Tuesday, August 06, 2024, 11:35, Albert Kong, Standard Operation, Other, BL1A Holding Tank, BL1A and RH Active Sump Draining
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The RH active sump was drained (over Jul 31-Aug 01), in total approximately 5500 L of water was sent to city sewage.
We also tried to divert water from the BL1A holding tank to the active sump, and learned that we cannot run back-flow through the sump pump. The
valving configuration used here was V10, V1, SV1, V6 open - V2, V3 closed. (Note solenoid valve SV1 does not serve a purpose and energizing/powering-down |
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Wednesday, April 04, 2012, 15:51, Isaac Earle, Repair, Target 2, Target, BL1A Update
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Vacuum interlock defeat jumpers were removed for T1 and T2. The interlock was tested by venting the T1 and T2 volumes. Both packages registered
a vacuum trip, however only the T1 package shut off. A fault report has been filed to investigate this.
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Friday, January 11, 2013, 15:48, Isaac Earle, Standard Operation, Target 1, Target, BL1A Tunnel Accessed
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The BL1A tunnel was accessed to drain and sample T2 cooling package water. A puddle of water was noticed in the South TNF area around the
drain by the boot-box. No water was found in the BL1A tunnel. Photos attached. |
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Monday, July 09, 2012, 17:17, Isaac Earle, Standard Operation, Target 1, Target, BL1A Start-Up Prep
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- T1 & T2 targets switched to "remote" control
- Both target ladders were moved to Position 3 (12mm Be)
- T2 Q1 flow interlock defeat was removed (only required when target ladder is in position zero) |
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Tuesday, June 23, 2015, 10:24, Isaac Earle, Standard Operation, Other, Other, BL1A Holding Tank Water Released
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The water in the BL1A holding tank was released to the city sewer. This water was sampled, tested, and approved for release by RPG two weeks
ago. The total volume was 510L, a combination of water from the T2 and TNF systems. The total time required to pump out the water with all
valves fully open was 1hr2m. Paperwork for the water release was completed and returned to RPG. |
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Wednesday, April 03, 2024, 10:48, Adam Newsome, Other, Other, BL1A Holding Tank, BL1A Holding Tank - water level check
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As of 2024-04-03, the BL1A Holding Tank water level is approximately 580L. It is recommended to drain the tank prior to the start of the operating year.
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Tuesday, August 23, 2022, 14:36, Adam Newsome, Standard Operation, Other, Other, BL1A Holding Tank - Level Check
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| The water level inside the BL1A active water holding tank was checked today (Aug. 23, 2022). The tank is essentially empty at this time. |
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Friday, May 08, 2015, 09:48, Isaac Earle, Standard Operation, Other, Other, BL1A Blocks Restored
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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. |
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Tuesday, January 08, 2013, 09:27, Isaac Earle, Standard Operation, Target 2, Target, BL1A Air Amplifier turned off for duration of shutdown.
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The BL1A air amplifier has been shut down by closing the air supply valve on the device. The
air amplifier supplies high pressure air (110psi) to the following devices: M9BB, M20BB, T1 Profile Monitor, T2 Profile Monitor, T2 Collimator, Septum
Polarity Switch |
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Wednesday, March 04, 2020, 13:42, Ron Kuramoto, Repair, Other, Other, B/L 1A vacuum air leak repair
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A 4” Marmon aluminum blank-off flange and o-ring were replaced on the south port of the T1 target monolith vacuum vessel. This port
was accessed from the 1A Service Tunnel were the repair took place.
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Friday, December 19, 2014, 14:35, Isaac Earle, Standard Operation, Target 2, Other, Amplified Air Shut Off
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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). |
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Wednesday, August 13, 2014, 16:34, Isaac Earle, Repair, Target 1, Other, Amplified Air Leak Narrowed Down to T1 Area
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During the maintenance day today, amplified air to the T1 area was valved off in an attempt to pin point the location of the air leak. The
air amplifier cycle rate returned to normal with the T1 line valved off, indicating the leak is somewhere on the T1 profile monitor air cylinders, the
T1 septum polarity switch, or on the supply lines to these devices. Because these devices will not be used in the near future, the line will be left |
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Monday, November 17, 2014, 10:25, Isaac Earle, Repair, Target 1, Other, Amplified Air Leak In T1 Area Repaired
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While the 1A blocks over the T1 area were removed last week the opportunity was used to investigate an air leak on the amplified air system discovered
on August 11, 2014.
The leak was found to be coming from a device related to the septum polarity switch located behind (south of) the septum power supply on the 1A |
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Thursday, July 09, 2020, 06:44, Isaac Earle, Development, Other, M9, Alignment of M9 Q1Q2 magnets complete
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Mike Vogel reported that alignment of the Q1Q2 assembly w.r.t. the T2 and B1 flanges was completed on July 7. This was performed in the test
stand with the flange positions set to the measurements taken in the 2019 shutdown. Alignment to the theoretical location was achieved within 0.1mm.
The axis of the Q1 and Q2 magnets were aligned to each other previously within similar accuracy. |
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Tuesday, February 21, 2012, 09:56, Isaac Earle, Repair, Target 2, Target, Air Supply Check Valve & Q4 Flow Transducer
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The faulty air pressure supply check valve for M9BB, M20BB, and T2 Profile Monitor was replaced.
The rotor, shaft, and o-ring were replaced on the Q4 flow transducer to address erroneous readout that began last week.
The attached plot shows the flow readout before failure, during the failed state, and after repair. |
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Thursday, March 30, 2023, 13:17, Albert Kong, Maintenance, Other, Target, Air Amplifier Testing: M9 BB (AKA T2 blocker), M20 BB, T2 MK1 prof. monitor, T1 MK1 prof. monitor actuation
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We tested the air amplifiers by actuating the beam blockers and profile monitors on the T1 and T2 target stations.
The blockers and profile monitors were each actuated (brought up/out and down/in fully) > 5 times and vacuum remained stable throughout (see
attached). |
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Tuesday, April 21, 2015, 13:38, Isaac Earle, Standard Operation, Target 1, Target, Air Amplifier Started. T1 & T2 Profile Monitor Actuation Checked
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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 |
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Friday, June 22, 2012, 13:54, Isaac Earle, Maintenance, Target 2, Target, Air Amplifier Rebuild Complete
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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 |
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