 Thursday, December 17, 2015, 13:31, Grant Minor, Development, Other, Target, T1/T2 Target Cassette - window / end cap manufacturing change (WO 41527) 
|
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 |
|
Monday, March 07, 2016, 18:22, Isaac Earle, Development, Target 1, Controls, Preliminary Testing of T1 Control System Complete
|
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 |
|
Wednesday, March 16, 2016, 16:50, Isaac Earle, Development, Target 2, Controls, Preliminary Testing of T2 Control System Complete
|
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. |
|
Thursday, March 24, 2016, 15:38, Isaac Earle, Development, Target 1, Target, T1/T2 Beryllium Target Test Jig Fabrication Complete
|
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. |
|
Thursday, April 07, 2016, 16:44, Isaac Earle, Development, Other, Controls, T1/T2 Controls "Assembly Tests" Completed
|
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. |
|
Monday, April 11, 2016, 13:51, Isaac Earle, Development, Other, Other, Target Transfer Flask Hoist Hook Lower Limit Adjusted
|
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. |
|
Tuesday, June 21, 2016, 09:25, Isaac Earle, Development, Other, Controls, T1/T2 EPICS System With-Beam Testing
|
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. |
|
Tuesday, August 30, 2016, 14:09, Isaac Earle, Development, Other, Controls, T1/T2 PLC Code Update
|
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 |
|
Thursday, September 08, 2016, 17:26, Isaac Earle, Development, Other, Active Sump, New Active Sump High Level Switch and Electronics Installed
|
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 |
|
Thursday, October 06, 2016, 12:16, Isaac Earle, Development, Target 1, Controls, Expansion Tank High Level Warning Added
|
An expansion tank high level warning has been added to the T1/T2 control system under Work Request #4011. The purpose for this new warning
is to alert staff of an unexpected water increase in the unlikely scenario that a leak develops in the heat exchanger between the two fluids and CuALCW
on the secondary side enters the target water system. The new thresholds for high level warn, low level warn, and low level trip have been set at |
|
Thursday, March 30, 2017, 09:48, Isaac Earle, Development, Other, Controls, T1/T2 control system de-glitching & target ID changes
|
The following changes were made to the T1/T2 PLC control system:
- De-glitching system investigated and Tony discovered that it was programmed incorrectly: the de-glitch time was observed only when a PV
changed from bad state to good, not the opposite (meaning there was actually no de-glitching in place since system start-up in 2016!). This was reversed |
|
Wednesday, April 05, 2017, 17:55, Isaac Earle, Development, Other, Target, T2 area devices alignment strategy
|
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 |
|
Tuesday, April 11, 2017, 17:31, Isaac Earle, Development, Target 2, Target, T2-MK2 target MRO and alignment of T2 devices
|
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:
|
|
Friday, May 05, 2017, 15:09, Isaac Earle, Development, Target 2, Target, T2-MK2 beam spot check in hot cell
|
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 |
|
Thursday, July 27, 2017, 09:34, Keith C Ng, Development, Other, Other, test 2
|
| test 2 |
|
Thursday, December 07, 2017, 13:54, Isaac Earle, Development, Other, Other, Waste pails transferred from warm cell storage bunker to rad waste pit
|
Six 5 gallon pails were transferred this morning from a temporary storage bunker in the Warm Cell to the Rad Waste Pit for long term storage. The
pails contain various BL1A active waste from the East Hot Cell including dozens of irradiated beryllium and graphite targets. The field from the
pails ranged from 0.1 to 9mSv/hr at 0.5m. The work was performed according to the clean-out procedure (Document-142965). |
|
Monday, June 24, 2019, 14:29, Isaac Earle, Development, Target 1, Target, T1 and T2 target alignment frames overhauled 8x
|
The following work was completed on both the T1 and T2 target alignment frames
One of the short taper pins on the top of the frame was swapped for a longer version to simplify flask alignment to the frame (now one
pin can be aligned at a time instead of both concurrently)
Three permanently mounted cameras installed to view east/west alignment, north/south |
|
Friday, February 28, 2020, 09:06, Isaac Earle, Development, Other, M9, M9 Q1Q2 service stand floor plate installed
|
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 |
|
Wednesday, March 11, 2020, 10:29, Isaac Earle, Development, Other, M9, M9 Q1Q2 service stand foot plate installed
|
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 |
|
Tuesday, June 09, 2020, 17:01, Isaac Earle, Development, Other, M9, Cables and helium leak check line installed to M9 service stand
|
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 |
|