 Thursday, April 09, 2015, 13:56, Isaac Earle, Development, Target 2, Target, T2-MK2 target wired for version identification, cable ties replaced, ready for use
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The "POT/CAM" MS connector on the T2-MK2 has been wired to allow automatic target version number identification by the new T1/T2 control system.
Pin A was jumpered to Pin C. (MK1 targets will use Pin A to Pin B jumper).
The nylon cable ties on the target assembly were found to be very brittle and fragile, they have been replaced with PEEK cable ties. |
Wednesday, April 22, 2015, 09:46, Isaac Earle, Development, Target 1, Target, Water Sensors Installed on T1 Monolith 
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Four water sensors have been installed on top of the T1 monolith. These water sensors were wired and brought to the area during the 2014
shutdown, but installation was delayed so that the top of the monolith could be painted first. The sensor labels (attached to the sensor cable) are:
T1, T2, T6, and T8. The location of each sensor is documented on the diagram below. Two photos of the top of the monolith are also attached. |
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Wednesday, April 22, 2015, 15:17, Isaac Earle, Development, Target 1, Target, T1-MK2 wired for version identification
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The T1-MK2 target was wired for automatic target version detection by the new PLC control system (A to C jumper in POT/CAM MS connector).
T1-MK1 and T2-MK1 targets still need to be wired which can take place after the shutdown without moving them from the storage pit. |
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Thursday, April 23, 2015, 13:40, Isaac Earle, Development, Target 2, Other, T2 Protect Monitor Elevation Adjustment
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- T2 Protect Monitor moved from the beam line to the hot cell on Monday April 20th
- Elevation of the plate center measured at 1839.0mm from the base of the vacuum flange
- Old monitor cassette photographed (attached). Heat mark noticed on exit side approximately 10mm above and 5mm south of plate centers (cause |
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Tuesday, April 28, 2015, 15:55, Isaac Earle, Development, Target 1, Target, Target Version Jumper Wires Installed for T1-MK1 and T2-MK1
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The T1-MK1 and T2-MK1 targets have been re-wired to allow version identification. Work was performed in the target storage pit. Approximate
field around the targets in the pit was 100microSv/hr. Disposable coveralls were worn for the job and had 800cpm of contamination on completion.
All nylon cable ties on the targets were replaced with PEEK cable ties. Total dose received was 0.06mSv by Isaac Earle. This modification |
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Thursday, June 11, 2015, 16:59, Isaac Earle, Development, Other, Controls, Lab Test of New T1/T2 Level Sensors
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The new T1/T2 level sensors (Omega LVCN414) were tested in the RH HC lab today using the Omega software on a laptop and positioning the level sensor
flange above a bucket of water with similar height as the expansion tank.
The level sensors behaved as expected with varying water level. |
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Friday, June 19, 2015, 17:11, Isaac Earle, Development, Other, Controls, PLC Test of Ultrasonic Level Sensor
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The new T1/T2 level sensors (Omega LVCN414) were hooked up to the PLC and the test performed
on June 11 was repeated.
The water level above the base of the bucket was measured using a tape measure, as well |
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Wednesday, July 08, 2015, 16:21, Isaac Earle, Development, Target 1, Target, 0.003" 347 SS Sheet for T1/T2 Targets Received
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A 5lb roll of 347SS sheet was received today. This alloy is to be used for the target windows of the new T1 and T2 beryllium target cassettes
that will be manufactured in the near future. The material was ordered from Alloys International (PO# TR206407). A mill spec report was included
with the material, a scanned copy is attached in PDF format. The roll will be stored in the meson hall RH hot cell lab office on the shelving above |
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Thursday, July 09, 2015, 13:51, Isaac Earle, Development, Other, Target, New T1 and T2 Beryllium Targets Ordered
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An order for new T1 and T2 beryllium targets was submitted to the TRIUMF machine shop today. A total of seven T2 targets and twleve T1 targets
were ordered to match existing stock of wire EDM target shells. All required materials were supplied. Completion by October 30, 2015 was requested.
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Friday, July 17, 2015, 10:14, Isaac Earle, Development, Target 1, Target, T1/T2 Be Target Failure History & Replacement Plan
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T1 and T2 beryllium target failure history was investigated back to 2000 (as far as XSTRIP records were readily available). For each target cassette
the following were noted: length of time the target was subject to direct beam, length of time the target was on the ladder w/o direct beam, and method
of failure. The purpose of the study was to devise a target replacement strategy so that T1 and T2 beryllium targets are preemptively retired from |
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Thursday, August 13, 2015, 09:47, Isaac Earle, Development, Other, Other, "Clamp A" disassembled and used to build clamp "TRH1257-#01"
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The 4" Marman flange clamp (IRH0001) labeled "Clamp A", as used in the testing detailed in Document-114623 Release 1, has been disassembled.
The parts were used to build a TRH1257 clamp which uses the new TRH1259 jaw with 0.480" jaw root width. This new clamp has been labeled
"TRH1257-#01", and will be tested with Helicoflex H-303654 seals in the near future. |
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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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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, 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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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, 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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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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Tuesday, June 21, 2016, 09:25, Isaac Earle, Development, Other, Controls, T1/T2 EPICS System With-Beam Testing
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With-beam commissioning tests were completed today by Tony Tateyama and Isaac Earle. The test results are attached in PDF format. These
tests are described in Section 7 of the Commissioning Plan (Document-118467 Release #2). These tests were not part of the official commissioning,
but intended as an additional check of system functionality with beam on, and to confirm that the CCS current protection system performs as expected. |
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Tuesday, August 30, 2016, 14:09, Isaac Earle, Development, Other, Controls, T1/T2 PLC Code Update
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A new version of the T1/T2 PLC code has been uploaded to the PLC CPU. The main change in the new version is a fix to a bug related to the
target MK# which may have caused the previous CPU crashes. The EPICS interface now needs to be updated so that no target information is displayed
on the EPICS screens when there is no target installed, or jumpers for both MK1 and MK2 are detected. This must be tested during the next maintenance |
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Thursday, September 08, 2016, 17:26, Isaac Earle, Development, Other, Active Sump, New Active Sump High Level Switch and Electronics Installed
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To address the deficiencies identified in E-Logs #204 and #205 the old active sump high level switch was replaced with Omega LV164SS model (316SS stem
and float, 4' length, standard mount) using adaptor flange TRH1316 to mount to the top flange of the sump. A new electrical box was also installed
(circuit diagram attached in PDF format). The circuit was designed by Don Jackson and wired by Travis Cave. Connection to the RCR Lab PLC was |
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