 Thursday, January 30, 2020, 17:55, Isaac Earle, Repair, Target 1, Target, T1-MK2 target assembly repair completed in hot cell 
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The following work was done to the T1-MK2 target in the hotcell between the dates of May 24, 2019 - Jan 30, 2020 (See E-Log #251 for further information):
May 24: Flushed position 2 with water, purged all positions with air. Left air running through position 0 over the weekend
May 27: Switched to position 5, left air running to dry out bellows
May 28: Started pump out with cold-trap; Reached "fine |
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Wednesday, February 05, 2020, 14:53, Isaac Earle, Maintenance, Target 1, Cooling, T1 & T2 cooling package MRO work completed
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Annual MRO work on the T1 and T2 cooling packages is now complete. The following tasks were performed:
Water from both packages drained to the South TNF holding tank (samples taken)
All Proteus paddle wheels, shafts, and
o-rings replaced (5 each at T1 and T2)
All Cuno filters changed
Archived data for all sensor readbacks inspected. Only |
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Monday, February 10, 2020, 14:51, Isaac Earle, Maintenance, Other, Other, T1-MK2 target and M9BB moved
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The T1-MK2 target was moved from the hot cell to Hole #5 in the storage pit. The M9 beam blocker was then moved from the beamline to the
hot cell for MRO work. A field of 14.4mSv/hr was measured at 0.5m from the beam blocker during removal. |
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Friday, February 28, 2020, 09:06, Isaac Earle, Development, Other, M9, M9 Q1Q2 service stand floor plate installed
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The M9 service stand floor plate (TB23351) was installed in the M9 pit yesterday. Prior to installation all 5 threaded inserts were tested
using a 1/2"-13 stud tool on an RH pole. The west most hole (shown in red below) had damaged threads and the stud could only be threaded in
2 turns. All other locations (shown in green) had usable threads with 6-8 full turns possible with the stud tool. The plate was installed using |
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Wednesday, March 11, 2020, 10:29, Isaac Earle, Development, Other, M9, M9 Q1Q2 service stand foot plate installed
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The M9 Q1Q2 "foot" plate (TB23363) has been installed over the floor plate. A nominal gap between the plates of 1/2" was set
before lowering the plate, it was then leveled using the three adjustment bolts resulting in a larger gap. After leveling, the plate was lifted to
remove the spirit levels and lock the position of the leveling bolts. The plate was then re-lowered and the tiedown bolt assemblies (TB23383) were |
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Monday, March 23, 2020, 16:13, Isaac Earle, Maintenance, Other, Other, M9 beam blocker MRO completed
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M9 beam blocker MRO work was completed in the hot cell today. This included replacement of the main shaft seals and replacement of the air cylinders.
Actuation was tested after replacement and the blocker moved smoothly through the full length of travel with approximately 45psi air pressure. It
is ready for transport back to the beamline. |
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Monday, April 06, 2020, 15:02, Isaac Earle, Standard Operation, Target 2, M9, M9 beam blocker returned to beamline
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The M9 beam blocker was returned to the beamline today using the RH shielded transport flask. The top flange o-ring was replaced before installation.
After installation the "Lift T" assembly was removed, and electrical cable and air supply connected. Correct functionality of the
limit switches was confirmed with the control room. Actuation of the beam blocker could not be tested at this time because control takes place through |
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Tuesday, June 09, 2020, 17:01, Isaac Earle, Development, Other, M9, Cables and helium leak check line installed to M9 service stand
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The 10-pin thermal switch wire, 2-pin steering wire for Q2, and a 1/4" copper tube for remote helium leak check were installed through the
service chase with the power cables and connected to the M9 service stand. Approximately 10m of extra cable (2-pin and 10-pin) was coiled and left
in the cooler section of the service chase after the first sharp bend. The cables and the tubing are currently run as far as the vertical cable tray |
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Wednesday, June 10, 2020, 08:58, Isaac Earle, Development, Other, M9, T2-M9 and M9-B1 flange scan data
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Laser tracker scan data from 2017 and 2019 attached as a backup. Original files from Beamlines Group who also keep copies on \\trwindata\experimental
support\alignment\T2-M9_data |
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Friday, June 12, 2020, 13:54, Isaac Earle, Development, Other, M9, M9 Q1Q2 water header installed
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The Q1Q2 water header (TB23481) was mounted this morning as per installation drawing TB23400.
Heat shrink tubing was applied to the B1 power cables (two positive, two negative) over the length of cable in the highest field which was showing
some signs of radiation damage on the insulation. The tubing used was McMaster-Carr PN 75665K932 (Clear PTFE, 4:1 shrink ratio, 1.0" ID before |
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Tuesday, July 07, 2020, 13:22, Isaac Earle, Development, Other, M9, M9 Q1Q2
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The M9 Q1Q2 magnet assembly lift beam has been installed according to drawing TB23401. The side-to-side as well as beam-axis direction adjustment
features were tuned so that the assembly is level when lifted.
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Tuesday, July 07, 2020, 15:13, Isaac Earle, Development, Other, M9, M9 Q1Q2 service stand Lemo connector wiring
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The diagram below shows the wiring for the two connectors on the service stand (the wires running from the stand to the power supplies. (see TB23400
for details)
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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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Wednesday, August 19, 2020, 12:57, Isaac Earle, Maintenance, Target 1, Cooling, T1/T2 MRO summary for 2020 shutdown
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The following work was completed during the 2020 shutdown period for BL1A (Jan-Aug 2020):
T1 and T2 EPICS data checked for anomalies. None found, all sensors behaving as expected
T1 and T2 cooling package
water drained to storage tank, sampled, and released
All cuno filters changed (3 for T1, 2 for T2)
All T1 and T2 proteus paddle |
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Tuesday, October 27, 2020, 14:01, Isaac Earle, Repair, Target 2, Cooling, T2 Collimator flow meter paddle wheel replaced
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The T2 Collimator A flow meter signal (B1A:T2:FGCOLA) began fluctuating and occasionally reading 0gpm on Sunday Oct 25 causing BL1A trips and machine
down time.
On the maintenance day today (Tues Oct 27), the T2 package was uncovered and the T2 Col. A flow meter was opened. No unusual deposits were |
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Tuesday, November 24, 2020, 15:10, Isaac Earle, Standard Operation, Target 2, Target, Additional targets added to T2-MK1 ladder
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The following work on the T2-MK1 target was completed sporadically over the last few months:
Sept 22: |
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Wednesday, February 17, 2021, 10:39, Isaac Earle, Development, Other, UCN, UCN Target Cask Testing 8x
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A trial run of remote removal of the UCN target was performed using the shielded target cask (TTA0335) developed in 2020. The work took place between
Feb 9 - 17 under work permit C2021-02-09-1.
The procedure in work instruction Document-187117 R1 was followed. Draining and purging of the water system as well as venting of helium from the |
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Wednesday, April 14, 2021, 14:30, Isaac Earle, Standard Operation, Other, Active Sump, RH Lab Active Sump pumped out
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The RH Lab Active Sump reached the high level sensor at some point overnight before the April 8th work day. Maico Dalla Valle noticed the
alarm in the morning and notified RPG and myself. I also received a notification by e-mail from Vicky Hannemayer who had been contacted by Ops because
of the RCR alarm. |
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Friday, November 22, 2013, 20:26, Grant Minor, Repair, Target 2, Water Leak, T2 Water Leak - Target Assembly Removed and Water Sucked Out of B/L
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T2 target water leak was identified earlier this morning.
Isaac Earle, Ron Kuramoto and Keith Ng co-ordinated Meson Hall blocks removal and target flask transport.
Target assembly was removed from B/L approximately 5pm. |
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Wednesday, May 14, 2014, 20:36, Grant Minor, Development, Target 2, Target, Target exercised to position 0, then back to 2.0 mm above position 4
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The T2 target was exercised to position 0 around 6:15pm so that the T2 profile monitor could be used by operations. The T2 water package was re-enabled
when the target was in position 0, however this resulted in some trips of the cooling package.
Operations called around 7:45 to request return of the target to about 2mm above position 4. |
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