 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 |
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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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, 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 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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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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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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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. |
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Friday, May 13, 2016, 15:04, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 Position 4 Adjusted to +1.5mm Offset
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The T2-MK2 target at Position 4 has been adjust to approximately +1.5mm offset. This causes the ladder to be moved downwards, raising the beam
spot location on the target window. The potentiometer ratio at this offset is approximately 0.810 (> 0.8059 nominal ratio for position 4, and
therefore closer to Position 5) |
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Wednesday, June 15, 2016, 11:00, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 Target Moved to Position #1
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Position #4 on the T2-MK2 target has now reached the maximum beam time. The target was moved to Position #1 at the nominal elevation. This
target should be used for the remainder of the 2016 running period. |
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Friday, September 30, 2016, 16:54, Isaac Earle, Repair, Target 1, Target, T1-MK2 - New Beryllium Targets Installed
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The following work was performed on the T1-MK2 target assembly during the September 2016 Mini-shutdown:
Monday Sept 26: |
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Monday, January 09, 2017, 15:07, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 Target Moved from BL to HC
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The T2-MK2 target assembly was moved from the beam line to the hot cell today. A maximum field of 203mSv/hr was measured at approximately
0.5m
A steel shielding plug has been installed in the T2 hole to reduce shine and allow the T2 volume to be pumped down. |
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Thursday, January 12, 2017, 09:21, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 Position 1 Beam Spot
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The beam spot on the 10cm beryllium target in Position 1 on T2-MK2 (Target ID: "OCT.06#3") was measured and photographed yesterday. A
fairly well centered spot was measured to be approximately 4.6mm wide x 5.2mm tall on the entrance window and 5.7mm wide x 7.6mm tall on the exit window
using the Nikon micrometer level. This target first saw beam on June 16, 2016. |
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Wednesday, April 05, 2017, 17:55, Isaac Earle, Development, Other, Target, T2 area devices alignment strategy
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A strategy for alignment of the T2 protect monitor, T2 target, and T2 Collimator A was discussed today and decided upon by Yuri Bylinski, Isaac Earle,
Yi-Nong Rao, and Roman Ruegg. The purpose of the adjustment is to try to reduce the amount of beam lost as it passes through the T2 area (presumably
being blocked by the collimator because it is not possible to steer the beam through all three devices in their current configuration). Keeping in |
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Tuesday, April 11, 2017, 17:31, Isaac Earle, Development, Target 2, Target, T2-MK2 target MRO and alignment of T2 devices
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The following work was performed on the T2-MK2 target assembly and the T2 Protect assembly for maintenance purposes and to implement the alignment
strategy detailed in E-Log #218:
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Friday, May 05, 2017, 15:09, Isaac Earle, Development, Target 2, Target, T2-MK2 beam spot check in hot cell
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On May 5th the T2-MK2 target was moved to the hot cell for the purpose of checking the beam spot on the Position 2 beryllium target to confirm
the results of the T2 area realignment detailed in E-logs #218 and #220. In preparation beam was put on this target overnight for approximately 1.5hrs
at 10uA and 4 hours at 50uA (previously had not seen beam). Also, there had been issues with the T2 profile monitor over the last couple days, so |
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Monday, May 15, 2017, 16:55, Isaac Earle, Other, Target 2, Target, T2 profile monitor actuation issue
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On Thursday May 11th operators attempted to move the T2 profile monitor (T2-MK2) to the IN position but were unsuccessful. The monitor would
leave the OUT limit, but would not reach the IN limit. This was repeated 2 times. The air amplifier was inspected and nothing out of the ordinary
was noted. The T1 profile monitor was tested and was working properly. At the time it was suspected that the monitor cassette had become dislodged |
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Monday, July 10, 2017, 16:20, Keith C Ng, Repair, Target 2, Target, T2 Heat Exchanger Secondary Side Solenoid Valve Failure
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The T2 heat exchanger secondary side solenoid failed on July 9 at approximately 19:30 (EPICS ID: B1A:T2CS:SVSEC). The valve was replaced with a
spare and the cooling package is now running normally.
The valve at this location also failed in November 2016: https://elog.triumf.ca/TIS/RH-Meson+Hall/211 |
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Tuesday, August 29, 2017, 12:17, Isaac Earle, Maintenance, Target 1, Target, T1-MK1 and T2-MK1 Hansen water fittings replaced
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The #6 male Hansen fittings for the T1-MK1 and T2-MK1 targets (both currently stored in the target storage pit) were replaced today with new units.
Some of the target assembly Hansen fittings had shown signs of leaking and the internal seals are not easily replaced.
"120V" warning labels were put on the micro-switch IN and OUT limit sensors for the profile monitors on both targets. These are |
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Tuesday, October 10, 2017, 12:09, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 position 4 target changed
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The following work was performed on the T2-MK2 target assembly during the 2017 fall shutdown:
Oct 4, 2017: |
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