 Friday, March 04, 2016, 16:05, Keith C Ng, Primary Beamlines, Development, vault beamline 4 disassembly
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Attempted to remove RH parts between Q1, 2 and monitor vacuum box. Removed Q1 to monitor
box parts, could not remove monitor to Q2 parts, pin drive and indium ring are stuck in place. Indium joint is severed however. Collar was removed. |
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Thursday, July 27, 2017, 09:02, Keith C Ng, Primary Beamlines, Development, test
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| test |
Wednesday, February 06, 2013, 16:33, Keith C Ng, Primary Beamlines, Maintenance, t2 monolith measurements 
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Beam lines took measurements of top of T2 using Leica Total Station. Required no crane activities over 1A blocks.
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Friday, March 16, 2018, 13:39, Keith C Ng, M9, Maintenance, t2 m9 port inspection
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Video imaged T2 port post blank off removal, looks roughly the same as last year. Knife edge looks clean.
Attached composite photo of flange face, ring is a stand off to maintain focus distance to camera. Also attached partial composite image of 2017 |
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Tuesday, March 27, 2018, 15:08, Keith C Ng, M9, Standard Operation, t2 m9 port blank off
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1. Blank off installed
11:40 with Dan McDonald, east spring ear looks 'deeper" than west.
- Reused all hardware from last install, most active hardware was around |
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Thursday, March 29, 2018, 15:15, Keith C Ng, M9, Maintenance, t2 m9 port blank off
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Today leak checked the M9 exit port with Edi and we found no leaks. The usual delayed helium response in the M20/Collimator B/ M8(?) area is still persistent,
however Edi says the vacuum level at T2 is the same as before.
Shielding should be restored next week. |
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Wednesday, March 21, 2018, 15:22, Keith C Ng, M9, Repair, t2 m9 laser tracker jigs
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Installed the remaining laser tracker jigs for beam lines. No issues. Made sure 8" target the mounting poles did not interfere with each other and
pin drive was engaged with no issues.
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Monday, March 26, 2018, 15:57, Keith C Ng, M9, Maintenance, t2 m9 laser tracker alignment
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Removed all Leica tracker targets from M9 pit, I will proceed with blanking off T2 exit port sometime this week. Alignment group has taken possession
of their laser equipment and the target jigs. |
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Monday, February 20, 2017, 15:58, Keith C Ng, M9, Development, t2 m9 job wrap up
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| Restored shielding to T2 M9 void, blocks seem more crooked compared to previous years. |
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Tuesday, February 07, 2017, 15:36, Keith C Ng, M9, Development, t2 m9 job
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- Removed blank off from t2 m9 port, had to pry off with screw driver via spring ears. Clean removal it seems.
- Blank off is 200 uSv @ .5 m, 5000 CPM above bg.
- looks like 2 knife steps all around with oozing on the left and right, 0 and 180 deg |
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Friday, February 10, 2017, 15:53, Keith C Ng, M9, Development, t2 m9 job
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Installed all jigs and Alignment group did their shoots successfully. Used individual pins on the 15" target jig and worked ok. 8" target jig
has some previously undiscovered issues from the previous shoot from 2015 but did not affect this shoot. |
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Wednesday, February 15, 2017, 15:36, Keith C Ng, M9, Development, t2 m9 blank off
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Installed the blank off on the T2 M9 exit port:
Blank off 2013 installation procedure: 2.5 turns of the preload nut, after pins
are engaged and springs are at free length. |
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Thursday, February 09, 2017, 16:14, Keith C Ng, M9, Development, t2 m9 alignment
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Prepared m9 and b1 flanges for accepting their target jigs. The target jigs need to be reset by alignment group, 15" was bumped and 8" lost
2 of the target balls into the beam line. Reflector balls were recovered with a magnet on a stick, contaminated with 250 CPM, need alignment group to decontaminate
and clean them before use and reset the two jigs. |
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Thursday, February 01, 2018, 15:44, Keith C Ng, Primary Beamlines, Repair, q15 repair
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Correction that all supply side (even numbered insulators) ceramic insulators on Q15 have been replaced with new old stock insulators as of today. Beamlines
finds no power or water issues. Expected to cover up tomorrow moving on to the Q12 and Q13 magnet area next week.
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Friday, March 18, 2022, 12:12, Keith C Ng, Primary Beamlines, Repair, q15 repair
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| beamlines replaced leaking insulator on q15, circuit #4. See updated pdf for replacement part and location. |
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Thursday, October 11, 2012, 16:40, Keith C Ng, M9, Repair, m9 t2 joint repair
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Today:
Bridge setup complete; Noticed 12 x 3 x 3 block when placed on top of several other blocks rocked when placed down.
Took initial photos of joint: west side approximately 0.05" to 0.06" gap, east side 0.20" to 0.220" gap. Joint appears to be |
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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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