 Tuesday, March 11, 2014, 13:50, Isaac Earle, Repair, Target 2, Target, T2 Protect Monitor Returned to Beam Line
|
After the monitor assembly was moved to the hot cell, electrical checks were performed by Bill Rawnsley which showed the same results as when tested
in the beam line. A new monitor was installed (supplied by Probes Group), the tests were repeated, with all results appearing normal. The monitor
assembly was transported to the beam line this morning and installed at the T2 monolith. All cables were attached and the flange was bolted down. |
Friday, October 09, 2015, 14:56, Isaac Earle, Repair, Target 2, Other, T2 Protect Monitor Replacement 9x
|
On Monday Oct 5th a decision was made to uncover and remove the T2 Protect Monitor due to faulty readings. The monitor had been behaving
strangely since the September shutdown, and had been getting worse over time.
- Blocks were removed over T2 starting Monday afternoon. It is necessary to remove the narrow 12' block and two 6' blocks west of the T2 |
|
Monday, March 03, 2014, 11:55, Isaac Earle, Repair, Target 2, Target, T2 Protect Monitor Moved to HC
|
The T2 Protect Monitor was transported from the beam line to the hot cell this morning using the transport flask. The move went smoothly.
The only difficulty was locating the yellow flask alignment frame to the T2 monolith as the T2 protect holes on the yellow frame are tighter than
for other devices. It was necessary to remove four screws that secure the top flange of the T2 protect monitor assembly to the flange on the monolith. |
|
Friday, May 02, 2014, 15:49, Isaac Earle, Repair, Target 2, Target, T2 Protect Monitor Elevation Correction
|
When beam was started in mid-April, it was observed by Operations Group that with the beam centered vertically within the protect monitor, the profile
monitor showed the beam spot to be approximately 6mm high. The protect monitor was changed during the shut-down due to a failure in November 2013,
so it was suspected that the new protect monitor was not aligned properly. The beam spot appeared to be dangerously close to the top weld of the |
|
Thursday, April 23, 2015, 13:40, Isaac Earle, Development, Target 2, Other, T2 Protect Monitor Elevation Adjustment
|
- 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 |
|
Thursday, April 03, 2014, 13:43, Isaac Earle, Standard Operation, Target 2, Target, T2 Profile Monitor OK
|
T2 Profile Monitor actuation was tested today from the control room and all is working properly. The position (IN / OUT) also displays correctly.
To my knowledge nobody has looked at this system, so it is a mystery why it suddenly started working. This e-log will be updated if any explanation
is found. |
|
Tuesday, April 01, 2014, 10:17, Isaac Earle, Repair, Target 2, Target, T2 Profile Monitor Actuation - Fault Report
|
The T2 profile monitor cannot be actuated from the control room. When the solenoid valve that supplies air to the air cylinders is powered directly,
the monitor moves in normally, therefore a controls issues is suspected.
Additionally the monitor position shows neither IN nor OUT. This does not change when the monitor is at either limit. Proper actuation |
|
Tuesday, July 03, 2012, 13:23, Isaac Earle, Standard Operation, Target 2, Target, T2 Plug Block Replaced & Beam Blockers Tested
|
The T2 plug block was replaced and the M9 and M20 beam blockers were tested. The plug block did not interfere with the travel of the beam blockers.
There was no change in the T2 vacuum during BB actuation.
Initially there was some confusion about how to actuate the beam blockers. The following was learned: |
|
Friday, March 28, 2014, 13:59, Isaac Earle, Maintenance, Target 2, Cooling, T2 P1 Transducer and T2 Q1 Flow Meter Replaced
|
The T2 P1 pressure transducer (Omega PX315-100GI) and T2 Q1 Proteus flow meter (0150SSTF3) have been replaced with new units to address issues with noisy
signals. |
|
Wednesday, June 06, 2012, 08:58, Isaac Earle, Maintenance, Target 2, Target, T2 Monolith Leak Check
|
While leak checking components in the M20 front end on May 25th, the top of the T2 monolith was also checked by flooding the top of the monolith
with helium while it was covered with plastic sheeting. There was no response on the Varian leak detector indicating no significant leaks from the
flange seals, shaft seals, and seals for upper services on the T2 target, T2 protect monitor, M9BB, M20BB, and M8BB/Col.A |
|
Wednesday, February 03, 2016, 17:35, Isaac Earle, Standard Operation, Target 2, Cooling, T2 MRO Work
|
The following work was performed at the T2 cooling package and target between Jan 25 - Feb 3, 2016:
- Cuno water filters removed (2), and new filters installed
- Target water solenoid, H.E. secondary side solenoid, Collimator A solenoid, and Collimator B solenoids removed and replaced with new 24V DC versions |
|
Monday, February 02, 2015, 16:06, Isaac Earle, Maintenance, Target 2, Cooling, T2 MRO Status
|
- T2-MK2 target (currently in the T2 monolith) purged with air
- All cooling package reservoir o-rings changed |
|
Thursday, February 15, 2024, 14:53, Albert Kong, Maintenance, Target 2, Air amplifiers, T2 Lower Air Amplifier Maintenance/Rebuild
|
The lower amplifier for the T2 target station air supply was removed for teardown, inspection, and rebuild.
The goal of this operation is to understand wear development in the air amplifier over ~13 years of operation, and potentially determine a recommeded
service interval. |
|
Tuesday, July 25, 2017, 19:23, Isaac Earle, Repair, Target 2, Cooling, T2 Heat Exchanger Secondary Side Solenoid Valve Failure (again)
|
At approximately 13:50 today the T2 cooling system secondary side solenoid valve (T2CS:SVSEC) failed to a closed position. This was the same
location where the valve failed on July 10th (E-Log #224), and also in Nov 2016 (E-Log #211). This repeated failure does not seem like a coincidence,
so instead of replacing the valve with a new unit, it was bypassed temporarily until we can determine the cause of the failures. A 3/4" FNPT |
|
Monday, July 10, 2017, 16:20, Keith C Ng, Repair, Target 2, Target, T2 Heat Exchanger Secondary Side Solenoid Valve Failure
|
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 |
|
Thursday, November 17, 2016, 17:58, Isaac Earle, Repair, Target 2, Cooling, T2 Heat Exchanger Secondary Side Solenoid Valve Failure
|
At approximately 11am today the T2 cooling package heat exchanger secondary side water flow suddenly dropped from ~11gpm to 0. This was confirmed
to be a real reading by observing that with no secondary cooling both the inlet and outlet target water temperatures rose steadily with beam on the target.
While standing on the blocks in the T2 area and having a controls expert (wither "superuser" access mode) actuate the secondary side solenoid |
|
Wednesday, March 06, 2013, 12:13, Isaac Earle, Maintenance, Target 2, Cooling, T2 Heat Exchanger MRO 7x
|
- The new tube array was picked up from Kaltech on Feb 8th (observed vessel holding 60psi on hydro test at their shop)
- Vacuum leak checked at TRIUMF: would not pump down
- Applied 20psi air, and found leaks on both tube sheets using Snoop |
|
Tuesday, January 29, 2013, 15:55, Isaac Earle, Maintenance, Target 2, Cooling, T2 H.E. Transported to Warm Cell
|
Friday Jan 25:
- Both sides of heat exchanger drained, disconnected, and capped
- Heat exchanger transported to warm cell (field from H.E. approximately 15 |
|
Thursday, August 03, 2023, 10:33, Albert Kong, Repair, Target 2, Cooling, T2 Expansion Tank Water Level Low (Leak Identified) 7x
|
The water level in the T2 cooling system expansion tank dropped to below the trip treshold of 20 cm (ref Cyclotron fault #16123), requiring the beam
to be 'defined' off (see attached image).
Some calculations (see attached .html) show that over the period in which the tank level was dropping (from July 12 - Aug03, 2023) approximatley |
|
Thursday, February 02, 2012, 16:54, Isaac Earle, Repair, Target 2, Cooling, T2 Device Air Line Issue
|
While checking operation of the M9 and M20 beam blockers earlier this week, a strange noise was noticed coming from the T2 cooling package area. It
is a squealing sound that starts when M9BB, M20BB, or T2 profile monitor are actuated and continues for approximately 30 seconds, then stops. The
source was eventually narrowed down to somewhere on the air supply line coming from the air amplifiers on the south mezanine. When the air amplifiers |
|