Lid down operations for 2019/2020 shutdown went ahead as planned on March 10th 2020 with Dan Louie and Arthur Leung absent due to a conference. Please see attached file for station counter numbers. Station two right side Highfield gear box was making intermittent growling from outboard bearing, this station is next on scheduled maintenance and will be inspected post removal next shutdown. Station 3 has spare jack set 13 in place, using Operations thermal camera we where able  to observe higher than normal running temperatures from right side gear box. Upon removal next year we will investigate bearing end play tolerances as this is the suspected cause of heat.

The lid up operation took place on Jan. 22, 2021.

The system was not energized well ahead of time to allow to "warm up", as is usually done.

Starting Master Synchro value: 44

After gap set on all jacks, master synchro: 131

Notes on Jacks: Watch Jack 11, cause a few trips during lid down but was able to run again without jogging synchros

Jack 5 and 11 had spikes early but no trips

Jack 2 and 3 lagged early and caused trips (but no spikes)

After jogged 2 and 3 back, still had issues with 7,9,11

7, 9, 11 were jogged to match and then ran for half an inch, then 1, 5, 11 showed some spread

Lowered all the way down and spread was much improved (starting Master Synchro reading: 3)

Started raising again and went much smoother

Jacks 7 and 11 showed some occasional noise on readback

stopped to inspect vacuum seal (12:30 - Master Synchro 7016)

No trips on second attempt going up until 40"

Jack 1 kept falling behind, causing Jack 2 to trip

Finished at 2:03PM, Master Synchro at 47406

Meter stick did not reach ceiling (off by 1/4")

The meter stick versus limit switch discrepancy could be due to the stick shifting slightly by accident (due to vibrations or accidentally being bumped by someone). The limit switches were trusted as it would be highly unlikely for them to both disagree with the meter stick simultaneously if there was an adjustment setting issue with them.

The vault shield door has been closed and seal inflated. The operation was performed with no issue.

 The shield door is now open on the RH B2 level.

The lid up operation took place on Feb. 4, 2022.

The system was not energized well ahead of time to allow to "warm up", as is usually done. Upon starting, brakes were not energized - this was because of the master synchro position - once it was adjusted, interlocks for motor brakes toggled as expected.

Starting Master Synchro value: 61

Minor issue when first starting: after a few attempts to raise, jack 12 needed to be manually jogged to adjust its synchronicity with the others. After it was adjusted, the entire operation went smoothly and the system did not automatically stop again.

The system was stopped at approx. 3 inches of travel to inspect the seal, etc. Everything OK.

No major issues with any jacks. No overheating observed.

Jack 11 showed occasional noise spikes on readback (this happened in 2021 as well - suggest replacing this station's synchro next).

Meter stick hit the ceiling and bent slightly. The meter stick versus limit switch discrepancy could be due to the stick shifting slightly by accident (due to vibrations or accidentally being bumped by someone). The limit switches were trusted as it would be highly unlikely for them to both disagree with the meter stick simultaneously if there was an adjustment setting issue with them.The limit switches toggled as expected, and the gap was measured at 46.5" (correct value).

Ending Master Synchro value: 47387

Total time to raise was approx. 40 minutes.

Doses:
Arthur: #150, 0
Dan L: #310, 0.02
Dan M: #819, 0.04
Nadia: #868, 0.02
Adam: #862, 0.014
Kyle: #111, 0.09
Ryan: #115, 0.05
Chris: #840, 0.043

The lid down operation took place on Apr. 27, 2022.

The system was not energized well ahead of time to allow to "warm up", as is usually done.

Starting Master Synchro value: 47387

Upon startup, the system worked fine and lowered the lid.

After some time, jack station 12 became out of sync with the master synchro. It needed to be manually jogged to adjust its synchronicity. After it was adjusted, the entire operation went smoothly and the system did not automatically stop again.

No major issues with any jacks. No overheating observed.

 The vault shield door has been closed and seal inflated. The operation was performed with no issue.

The lid up operation took place on Jan. 30, 2023.

The system was not energized well ahead of time to allow to "warm up", as is usually done.

Starting Master Synchro value: 62

The Master Synchro was jogged to a value around 2 prior to starting, to allow it to lag behind the jacks.

When first starting: after a few attempts to raise, it was determined that the master synchro value needed to lag behind the other synchros more than initial suspected. This was changed, and the system operated smoothly for a short time.

During lid travel, station 5 and station 11 both caused trips and needed to be manually jogged to match the rest of the stations. The system was restarted, and more trips occurred. Stations 7 and 10 were adjusted as well. Eventually, after adjusting a few stations, the lid travel smoothed out and no more issues were observed for the remainder of the operation.

The system was stopped at approx. 3 inches of travel (synchro count 5255) to inspect the seal, etc. Everything OK.

No major issues with any jacks. No overheating observed.

Jack 11 showed occasional noise spikes on readback (this happened in 2021 and 2022 as well - suggest replacing this station's synchro next).

When finished, the limit switches toggled as expected, and the gap was measured at 46.5" (correct value).

Ending Master Synchro value: 47388

The attached spreadsheets show all synchro values before and after the operation, as well as jack station infrared heat measurements.

Start time: 9:23 am
End time: 10:53 am (includes gap measurement, etc. - actual lid travel finish was a bit earlier)
Total time to raise was approx. 1.5 hr.

Doses:
Adam Newsome: 0.005 mSv
Maico Dalla Valle: 0.121 mSv
Eric Lahe: 0.056 mSv
Ryan Anderson: 0.017mSv
Kevin Lucow: 0.060 mSv
Ed Parton: 0.007 mSv
Jason Zhang: 0.025 mSv
Nadia Jorgenson: 0.005 mSv
Arthur Leung: 0 mSv
Dan Louie: N/A

[edited 2023-09-8 to fix typo - Adam Newsome]

The lid down operation took place on Mar. 31, 2023.

The system was energized a few minutes ahead of time.

Starting Master Synchro value: 47388. The master synchro was jogged up prior to starting to approximately 47395.

Upon startup at 10:38 am, the system worked fine and lowered the lid. No stops occurred and the lid lowered smoothly. No abnormal observations made. The lid was completely lowered at 11:05 am.

See attached summary.

The vault shield door has been closed and seal inflated. The operation was performed with no issue.

The cyclotron lid was raised starting ~10:30am on 2024-02-06 and finishing at ~3:30pm on 2024-02-08, under work permit C2024-02-06-4.

Upon first attempt to raise the lid, issues were encountered. The system seemed to start as expected but quickly tripped, resulting in no appreciable travel. Upon investigation, it was determined that this was due to a blown fuse which feeds the brakes master relay (see e-log  https://elog.triumf.ca/TIS/RH-Cyclotron/165). The result of this was the the brakes were not properly disengaging, leading to additional friction in the system, and preventing regular motion.

After rectifying this issue, a second attempt was made to raise the lid. This time, issues were encountered with some of the stations being out-of-sync with respect to the others (a result of the troubleshooting which took place for the aforementioned issue). After manually jogging some stations, it was decided to lower the lid all the way, jog motors for individual stations so that they physically match each other in terms of travel distance at a known starting point, manually adjust counters on some stations whose counter values were significantly off so that they matched neighbours, and then jog individual stations such that each synchro measurement was close enough to begin lid up operation.

After this work took place, another attempt to raise the lid was made. This time, the lid traveled fairly smoothly, with a few occasional stops. It seemed that some motors were lagging behind others a bit - namely stations 5, 11, and 12. After raising the lid approximately 4-6", it was decided that the best course of action would be to fully lower it and start again, now that the system had some time to "warm up".

The lid was lowered to the bottom limit again, and then raised. The master synchro count was 0 to start. This time, lid travel was the most smooth, and stops near the start of travel were infrequent. The occasional stop occurred but the system could easily be started again. Jogging individual stations was rarely required. Most stops were due to noise observed on the synchro at station 5 (false trips).
When the lid was approximately halfway up, another unexpected issue occurred: station 10 completely stopped, which caused the entire system to stop. Station 10 could not be jogged in either direction in local mode. After some troubleshooting, it was determined that the motor contactor was causing issues - eventually it was rectified (see e-log https://elog.triumf.ca/TIS/RH-Cyclotron/166).

The lid continued to raise smoothly for the remainder of the travel with very few or no stoppages. It raised all the way, as confirmed by the gap measurement.

Final master synchro count when lid was fully up: 47401

 

See attached inspection checklist which contains information about each jack station during lid up operation, as well as pre-job inspection data.

Recommended actions:
- Replace synchro for station 5 next shutdown
- Inspect all 12 motor contactors prior to next lid down
- Order spare motor contactor
- Install replacement fuse (on order)

The lid down operation took place on April 19, 2024.

The system was energized a few minutes ahead of time.

Starting master synchro value: 47401. The master synchro was not jogged prior to starting.

Upon startup at 12:45 pm, the system worked fine and lowered the lid. One stop occurred after lowering a few inches but the system was easily restarted with no modification. No abnormal observations made. The system was stopped at 1:05 pm at a master synchro count value of 12385 to check the tank seal, confirm limit switch functionality, etc., then resumed. The lid was lowered at 1:17 pm.

Overall, it seems that the lowering process was more "smooth" than in past years - the jack stations seemed to be well-synchronized and relatively few motor/brake toggles were required during travel (this is just based on memory and visual observations, not actual data). If this is true, it is likely attributed to the fact that during lid up operation this year, each station was synchronized with respect to each other to help reduce stoppages.

See attached summary.

Due to an issue with resonator latching, there was a need to raise the cyclotron lid a second time this shutdown.

The plan at first was to raise the lid by small increments (approximately 1mm at a time up to approximately 25mm) while RF group performed some checks.

After the RF groups completed their checks, it was determined that the lid needed to be raised the full extent.

The starting master synchro count originally was 52, and it was 2480 at the time when the decision was made to fully raise the lid.

The lid raised entirely with zero stoppages or observed issues. No abnormalities observed with any jack station.

The lid was fully raised by 1:49pm with a master synchro count of 47383.

See attached summary.

A second lid down operation took place on April 30, 2024.

The system was energized a few minutes ahead of time.

Starting master synchro value: 47427 (after it was jogged up slightly prior to starting).

Upon startup at 12:51 pm, the system worked fine and lowered the lid. The lowering was stopped at approximately 5" gap as per standard procedure for Operations to perform checks. Furthermore, the lowering was stopped multiple times after that at approximately 0.5" increments for resonator latch checks.

No abnormal observations made. No jogs required. Once again, this was a very smooth lowering process. The lid was fully lowered at 2:00 pm.

Ending master synchro value: 66

See attached summary.

The cyclotron lid was raised starting ~11:45am on 2024-05-02 and finishing at ~12:12pm under work permit C2024-05-02-5.

The raising was stopped a few times up until approximately 5" elevation, for RF group to perform checks, and to inspect the tank seal.

The tank seal was stuck to the lid near jack station 2.

The lid raised smoothly with no stoppages due to out-of-sync stations. No stations needed to be jogged.

Starting master synchro count was 66, but was jogged to 2 prior to starting. The final master synchro count when the lid was fully raised was 47387.

Note: the measuring stick which is affixed to the top of the lid and used to indicate full elevation was bent and should be "re-calibrated".

Summary attached.

A third lid down operation took place over May 6-7, 2024.

The system was energized a few minutes ahead of time.

Starting master synchro value: 47387 (after it was jogged up slightly prior to starting).

Upon startup on May 6 at 14:42, the system worked fine and lowered the lid. The lowering was paused at 15:28 (master synchro value of 17593).

Jack 6 exhibited issues similar to previous lid up (see e-log 166). It was likely due to an issue with a motor contactor. Electricians were contacted but could not work on the issue until the following day so the lowering was paused.

At 07:30 on May 7, electrician Randy Boehm determined that a cable connector on the motor contactor was loosened. After tightening the cable, jogging motor 6 was tested - OK.

Lid down commenced again at 08:10. Master synchro: 1915.

The lowering was stopped at approximately 1" gap as per standard procedure for Operations to perform checks. The lowering was stopped again multiple times to check resonator latching - OK.

End time: 08:37

Ending master synchro value: 59

Jogged master synchro value to 2, adjusted station 12 to match.

Notes: It was observed that at lid down Jack 12 did not have any gap. Jack 12 was jogged to match synchro values with the master synchro but still exhibited a 0.125” gap instead of the ideal 0.25” gap. It is recommended to keep an eye on Jack #12 during the next operation and check the motor contactors for loose fittings. In the before and after photos of the motor contactor it looks like the fitting on the bottom right corner of the motor contactor could have either come loose from the vibrations or the screw was sheared off. Further investigation is required.

See attached summary.