 Friday, February 06, 2015, 16:01, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work 
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T1 M13Q1Q2 work continued:
- Removed T1 Q1 indium seal ring, collapsed center vacuum box bellows using pneumatic cylinders. The bellows restraint was able to be rotated slightly
so that the cylinders could be retracted. The brace/restraint bar could only be rotated until the bar made contact with the electrical connectors on Q1. |
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Tuesday, February 10, 2015, 16:15, Keith C Ng, Primary Beamlines, Development, T1 Q1Q2 blank off work
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RH beam line work for UCN continues at T1.
- Attempted to scrape t1 flange, narrow scraping tool does not fit into space because of the headers on the water system of the magnet. Decided
to continue installing blanking plate with rubber anyway. |
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Wednesday, February 11, 2015, 16:46, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work
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work continues on T1 M13 area for UCN.
- He leak checked T1 M13Q1 joint (sealed with rubber) and surrounding uncovered area, no leaks found.
- Moved back B1 jaws box enough to clear the spring eyes on the Q2 vacuum box. |
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Thursday, February 12, 2015, 14:29, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work
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Removed M13 B1 magnet from beam line without issues, Q2 vacuum box is covered with bag and vacuum box "extended" with air off. Field is now
3000uSv @ 1/2m from the open vacuum box where B1 magnet was.
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Friday, February 13, 2015, 15:10, Keith C Ng, Primary Beamlines, Development, IVM3-IVQ4 indium joint section (WR #2686)
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Installed 4" indium seal at 1VM3 to IVQ4. No real problems with installation.
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Tuesday, February 17, 2015, 16:02, Keith C Ng, Primary Beamlines, Development, M13Q1Q2 vacuum box anchor (part of UCN work)
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The replacement pin drive anchor (see TB22300) for M13 Q1Q2 vacuum box lowered into initial position. The original B1 base plate was able to rock when
weight was placed upon it; A concrete block was used to counterweight the base while the new pin drive was being installed. The pindrive has not been adjusted
into final position. |
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Friday, February 20, 2015, 16:28, Keith C Ng, Primary Beamlines, Development, M13Q1Q2 vacuum box anchor (part of UCN work)
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Installed Q1Q2 pin drive and attempted to align it to the vacuum box. Spent majority of the day trying to align the pin drive/anchor.
- Pneumatic drive does not actuate smoothly, appears to be binding/catching, possibly due to some kind of misalignment, issues with the pneumatics.
A 1" space between T1 and Q1 flanges has been set but has a slight taper, starting 1" wide on the north east side tapering down by ~1/16 (to |
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Monday, February 23, 2015, 15:57, Keith C Ng, Primary Beamlines, Development, M13Q1Q2 blank off (part of UCN work)
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"Hector" shield block installed into place, Q1Q2 Vacuum box still actuates normally. It does not appear that the position of the pin drive
has shifted. Some additional shielding steel is to be placed on top of the shield block once RH setup is removed.
Remote handling equipment installed around T1 ready to install indium blanking plate between T1 and M13Q1. |
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Wednesday, February 25, 2015, 14:57, Keith C Ng, Primary Beamlines, Development, T1 M13Q1Q2 blank off work
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Blanking plate with indium between T1 and M13Q1 flange has been installed, joint will be He leak checked tomorrow. Vac group informs that pumping of
T1 volume will start this afternoon going over night.
- The spring eyes on Q2 vacuum box are ~0.2" above the pin supports, the gap changes by 0.05" between open and closed positions. |
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Thursday, February 26, 2015, 16:22, Keith C Ng, Primary Beamlines, Development, M13Q1Q2 blank off (part of UCN work)
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He leak checked T1M13Q1 joint, is leak tight.
- Detected a small leak in nearby M15 slits box. 4.3x10E-9 atm cc/sec was highest leak rate recorded (Vac group says is small leak, okay
to run). |
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Thursday, March 05, 2015, 08:42, Keith C Ng, Primary Beamlines, Repair, 1AT1 area water leak fixes 11x
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1) Quick connect fittings on the rotary collimator were leaking (the two red collared fittings in photo below).
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Monday, March 30, 2015, 16:10, Keith C Ng, M9, Repair, T2 area uncovering
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Started to uncover and create work space around T2 M9 area, setup is mostly complete. Some misc items to be craned into position. RH set up is mostly
to do He leak checking of 1A beamline due to vacuum leak somewhere in the area around T2, bridge on B1 side of M9 has not been set yet. |
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Wednesday, April 01, 2015, 16:07, Keith C Ng, M9, Maintenance, T2 M9 area work
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1) Block and bridge setup is mostly complete for T2 M9 sighting job. Waiting on approving drawing TB22322 in order to continue with installing sighting
equipment.
2) He leak checked upstream of T2 and surrounding area. Appears to be a small leak at the M9T2 exit port through the blanking plate seal. Mode |
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Tuesday, April 07, 2015, 08:27, Keith C Ng, M9, Development, m9 t2 alignment job
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Work completed for Thursday:
1) Shielding filler blocks removed from M9Q1Q2 hole. Highest field was 5mSv/h coming from TSH0081 on the end facing the monolith. Blocks and frame
had 1000-1200 CPM of contamination. |
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Tuesday, April 07, 2015, 16:09, Keith C Ng, M9, Development, m9 t2 alignment job
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work to prepare for installation of alignment jigs on T2M9 and M9B1 continues:
1) Vented T2 volume and removed M9 blanking plate. Volume was not fully vented so plate was stuck and had to be pried off slightly. Around 2 turns
of the nuts were required to undo the spring eyes, this is likely less than the total number of turns that were used to tighten the assembly since the |
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Wednesday, April 08, 2015, 14:18, Keith C Ng, M9, Development, m9 t2 alignment job 12x
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1) Visual inspection of T2 M9 flange: no obvious indium deposits on T2 flange knife edge seen, left over indium from before 2013 is still present on
counter bore. See screen captures. Screen captures show state of flange after removing blanking plate, no cleaning was performed after removal.
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Thursday, April 09, 2015, 17:20, Keith C Ng, M9, Development, m9 t2 alignment job
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1) Vented T2 and removed rubber seal blanking plate, vacuum level appeared to be at normal operating ranges prior to the indium seal developing a small
leak.
2) Removed B1 dust cover, cover was stuck to B1 flange due to oil residue. Oil residue is believed to be from a vacuum pump being turned on in |
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Friday, April 10, 2015, 16:25, Keith C Ng, M9, Development, m9 t2 alignment job
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Continued with installation of target jigs:
1) Craned in equipment for alignment group.
2) Attempted to install target jig over B1 flange; |
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Tuesday, April 14, 2015, 08:31, Keith C Ng, M9, Development, m9 t2 alignment job
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Yesterday:
1) Addressed mounting issue with the 15" alignment jig: removed material from the spring eye to make the hole from 1" to 0.75" when
bottomed out. This would cause the spring eye and mounting eyelets on B1 to have 0.226" of starting overlap, vs the original 0.024" negative |
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Thursday, April 16, 2015, 09:17, Keith C Ng, M9, Development, m9 t2 alignment job 9x
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Yesterday (Apr 15):
1) Installed TB22265 on to M9 exit port at 18:48 with no vacuum and left over night. Done per 2013 installation procedure (1.5 turns of the preload
nut, after pins are engaged and springs are at free length) |
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