Disc Services
29/11/04
End-cap Disc Services Assembly at RAL – Mon 29 Nov 2004
Colin Dabinett, Stephen Haywood, Ian Wilmut
See http://hepwww.rl.ac.uk/atlas-sct/engineering/ec/disc_services/
in particular Progress (just above Mins) and Circuits—progress chart.
1.
1.1
Progress
Cooling Circuits
Disc
Outer
Middle
Inner
Needed
2C
4
4
4
15 Nov
1C
2 wip
4
X
24 Dec
UK Spare → 2A
0
1 + 2 wip
4
18 Jan
5A
4
4
4
11 Nov
4A
4
4
4
2 Dec
3A
0
1 +2 wip
4
6 Jan
2A → Spare 2
0
0
1
20 Jan
1A
0
0
X
27 Feb
Spare 3
0
0
1
Some bent Pins have been found on 5C Circuits; just seem to be associated with 2nd Point Hi Blocks – origin
unclear, but looking at Soldering Jig.
Ian
1.2
Inform Liverpool & Nikhef when resolved issues.
Disc 6C – Martin
Around line 135. Some fraction of front also placed. A Torlon pad is partially detached – will be recorded as nonconformance, even though should be fine when fixed.
1.3
Disc 5C – Geoff
Around line 115. Some bent Pins identified – these will be replaced.
1.4
Disc 4C – Graham
Around line 111.
1.5
Disc 3C – Mike
Around line 111.
1.6
Nikhef (from 22 Nov)
¼ Disc Flushing with Swansolve.
9A
Soldered Cooling Circuits.
8A
Routing Harnesses.
7A
Tapes on; Front Cooling on; doing Opto-pluggins.
6A
G&S Foils soldered.
1
Disc Services
29/11/04
5A
Hope to add Services (already delivered) around mid-Dec.
4A
Would like G&S Foils wb 22 Nov. Need Cooling Circuits 1 Jan.
Seem to be problems with contamination of Nikhef Swansolve.
Ian
2.
Provide advice on Grounding Tab between Disc and Cylinder.
Components
2.1
General
Paragon seem to have sorted out plating problems. Await more today (29 Nov).
We have enough Foils for 2C (F+R) and 4A (R) – we should be careful what we do with Rear Foils in light of
RAL & Nikhef requirements. In addition, still need Foils for 6 Discs: 1C, RAL-Spare, 3A, 2A, 1A, Nikhef-Spare.
John is making some “dust covers” for the ends of the Cooling Circuits.
Need ~400 Clips per Disc. Probably do not have enough for Spare Discs.
2.2
Ian
Order more (“banjo”) Clips.
Ian
Check how many Splice Clips we have and ask Pawel for more.
FSI
The nominal priority is 6A (need 10 Dec) and then 2C (need 23 Dec).
2.3
Tapes & OptoHarnesses
Have all Tapes for 2C and most for 4A and 3A.
2.4
Cooling
There were some problems with Connecting Pieces for odd Discs (trying to use common pieces). Colin is getting
some test pieces made to resolve issues.
We have 209 Main-Lo Blocks – awaiting plating.
Sandwiches for 209 Main-Hi Blocks sent to Brite.
Stephen
2.5
Clarify plan with John Spencer.
Nikhef
Hope to send by 2 Dec:

Circuits for 4A

Replacement Circuit Mid-1002-102#19

G&S Foils for 4A

Peek Clips (“Banjo”) – 1000 off

Litz Wire

Tapes for 4A (except 4W11) & 3A (except 4W11, 2W6), although may have missing Tapes in time

Connecting Pieces for 5A
3.
Plans for Week
3.1
Cooling Circuits
On track.
2
Disc Services
3.2
29/11/04
Daresbury
Making good progress.
3.3
Disc 6C – Martin/Paul
Precise Placement with Mike’s help.
When we are ready to send to Liverpool:
Stephen
3.4
Order a high-series Transit van and sort out Insurance.
Disc 5C – Geoff
Complete soldering of Circuits; then Leak Testing etc. Paul to help. Propose to do DCS later.
Replace bent Pins – hope to simply replace Mini-Wiggle Circuit.
At least one week’s work before ready for Post-Assembly phase.
3.5
Disc 4C – Graham
Soldering of Circuits.
At least two weeks’ work before ready for Post-Assembly phase.
3.6
Disc 3C – Mike
Emma to retest replaced Tape. Soldering of Circuits.
3.7
Disc 2C
Arrived 18 Nov. Can do ~3 days work before need Mini-Cylinder – Tim is making one (or use one from 6C).
Hope to start 6 Dec.
3.8
Testing – Emma
Retesting 3C.
3.9
Other
Martin assembling Flushing Unit – should be finished by 3 Dec.
Colin
4.
4.1
Check compressed air with Martin.
Matters Arising
Spare Discs
Discs come with Primary Pads from Nikhef. Propose to add Reflectors, but not Jewels and Harnesses.
Stephen
4.2
4.3
From Liverpool Qualification
Stephen
Ask Tony for logs on CD to be sent up with Disc.
Ian
Check Fingers are glued down.
Ian
Follow up location of PPF0 Guides.
Safety
Stephen
4.4
Check with Pawel.
Check Working-alone Risk Assessment.
Dbase
Ian
Think about RAL Dbase for
a) Cooling Circuits
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Disc Services
29/11/04
b) on-Disc components
4.5
Disc Weight
Should include glue & solder.
4.6
4.7
Schedule Improvement

1C – would like ~2 Dec as a “spare”, Nikhef plan to ship 17 Dec.

Flushing Rig – Martin is assembling this.
Non-conformity in Hi-Lo Nature of Circuits
Ian
4.8
Spares for Cooling
Colin
5.
Come up with an ECR.
Order spares, including complete set of u and v Pipes (ignore common Pipes).
Up-coming Issues for Consideration
When all Discs are completed, hold a close-out review.
6.
Next Meeting
Next: 6 Dec.
SH 29/11/04
4