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. |
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 |
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. |
Thursday, January 11, 2024, 15:10, Albert Kong, Maintenance, Other, Cooling, T1/T2 Cooling Pkg. Proteus Paddle Wheel Maintenance, CUNO Filter Replacement, and Fitting Inspection
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The following tasks were performed:
All electrical, water, and pneumatic connections to the T1 target was reconnected.
3x and 2x CUNO filters for T1 and T2
respectively were changed (O-ring for the housings were not changed).
All hansen fittings on the front mounting plates of the T1 and T2 cooling |
Monday, January 15, 2024, 16:47, Albert Kong, Standard Operation, Other, Cooling, T1/T2 Cooling Pkg. Prep for Refill + Leak Check At Pressure 7x
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The following tasks were completed in preparation of re-filling the T1 and T2 cooling packages:
All valves were returned to the 'open' configuration (note, compressed air to collimators at T1 is to remain closed - rotating collimator
no longer in use || also note, odd handle configuration at T1 panel when all valves are open - see attached).
Leaks from valves were checked, |
Friday, January 17, 2014, 10:10, Isaac Earle, Standard Operation, Target 1, Cooling, T1/T2 Cooling Packages & Air Amplifier Shut Off
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In preparation for Edi to vent the BL1A vacuum volume, the T1 and T2 cooling packages were both shut off. They will remain off until vacuum
is restored in BL1A in a few weeks time. This afternoon, water will be purged from the T1 and T2 targets using compressed air so that stagnant water
is not sitting in the targets for an extended period of time. |
Monday, May 25, 2015, 12:48, Isaac Earle, Repair, Target 1, Controls, T1/T2 Controls System Crash
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At 9:15am this morning BL1A tripped off due to loss of the watchdog signals for the T1/T2 control system. Graham Waters investigated and the
problem was found to be a corrupted initialization file. The error was corrected, and BL1A was started by 11:30am.
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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. |
Tuesday, September 25, 2012, 16:31, Isaac Earle, Repair, Target 1, Target, T1/T2 Controls
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- The target control software was modified to reference the correct pot. look-up table for the target at T1 (T1-MK1)
- The target position buttons on the T1 & T2 panels were not working properly and Graham Waters was contacted to investigate
- Graham power cycled the microprocessor and the TG1 crate which seemed to make things worse (the control software would not even boot up) |
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. |
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 |
Tuesday, October 17, 2023, 14:25, Albert Kong, Maintenance, Other, Other, T1/T2 Air Amplifier Spool O-Ring Servicing
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Today we re-lubricated the o-rings on the top air amplifier for T1/T2, and replaced the o-rings on the bottom air amplifier with new and also lubricated
o-rings.
We used Haskel lubricant #50866. |
Wednesday, July 02, 2014, 16:56, Isaac Earle, Repair, Target 1, Cooling, T1-P2 and T2-P1 pressure transducers replaced.
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The T1-P2 (outlet) pressure transducer was replaced to address an erroneous signal. The XTPAGE value now reads as expected.
The T2-P1 (inlet) transducer was also replaced to address a noisy (and worsening) signal. Replacing the transducer seems to have had no effect
on the XTPAGE values. A possible controls issue is suspected and Jamie Cessford will be notified so that the matter is directed to the appropriate |
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. |
Wednesday, May 22, 2019, 14:25, Isaac Earle, Repair, Target 1, Target, T1-MK2 target moved to HC; T1-MK1 target moved to BL
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After extensive testing over the last 2 weeks it was determined that the protect monitor
on the T1-MK2 target had an issue with intermittent shorting between the high voltage line and ground (movement of the target ladder was causing the short
to come and go). |
Tuesday, April 21, 2015, 12:59, Isaac Earle, Standard Operation, Target 1, Target, T1-MK2 target moved from storage pit to beam line
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The T1-MK2 target was transported from the storage pit to the beamline. The target measured approximately 10mSv/hr at 0.5m. All target
services were hooked up and the cooling package was started (no change in T1 vacuum). |
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 |
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. |
Thursday, May 10, 2018, 15:23, Isaac Earle, Repair, Target 1, Target, T1-MK2 protect monitor and profile monitor replaced
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During first injection of beam down 1A problems were encountered with the T1 protect monitor. Testing was done by Probes Group from the mezzanine
leading to the following investigation and repair work.
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Wednesday, May 25, 2022, 10:15, Adam Newsome, Standard Operation, Target 1, Target, T1-MK2 moved from hot cell to storage area
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The T1-MK2 target was moved from the hot cell to the storage area, in position 5. Note: manual nudging of the flask was required to get it to align with
guide pins properly. |
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