tgc big wheel sector assembly plan 12.23.2004 tatsuo kawamoto atlas workshop 2005
TRANSCRIPT
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TGC Big wheel Sector assembly plan
12.23.2004 Tatsuo Kawamoto
ATLAS workshop 2005
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Some history
• 2003 Autumn : 1/24 full size frame in b188 trial of cable installation finalize cable length
• Feb 2004 : Idea of sector assembly tooling • March 2004 : Chamber mounting tool test operation at CERN
• Summer 2004: Realistic installation of cables on the 1/1 model. documentation
Trial of T7, etc handling at CERN(need further study• Oct. 2004: Signal cable preparation at CERN
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Taking into account considerations and constraints due to - availability of space as a function of time - delivery of major components (planned, possible) - installation at the pit - assumed assembly speed of 1 sector/2 weeks/site
neglecting for the moment worries like
- we don’t know yet the detail of TGC2/3 services assembly (we have better idea about TGC1: full size mock-up)
and assuming we still have reasonable time to learn
- with TGC-1A
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2004 2005 2006
Part of 180 Full 180
1-C
BW side C? BW side A?
The schedule might look like
1-A 2-C 3-C 2-A 3-A1-A
Beam
pip
e c
losu
re
tilt table
H-table
1 65
6 6 6 66
66 6 6 6
Wedge test?
spokesrim
transv.bar
A-frame, V-standstorage
Bracket 1-C/A
site-1
site-2
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b180
2nd site(somewhere) 1st site
Assembly + storage
Surface assembly site
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Horizontal+ tilt
Vertical
storage
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In order that it somehow works
• Space of the 1st site available (EC cal must move a bit) • Major components are/will-be there in January 2005• Tooling should arrive as planned Status : 1 tilt table mid. January H-table mid. Feb or later A-frame, V-stand early March (to decide how many) 2nd tilt table early March • TGC mounting tool (adapter for all chamber types): will come• Cables, PS-pack, tubes, DCS equipments• Test equipments: gas, electronics
• Man power : many things to do from January for the detector group, be ready in particular in February/March to establish many things.
The 1st sector TGC1-A
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In order that it somehow works
• Space for the 2nd site from April• Components have to be delivered in time Status : complicated, but it should work• Bracket : Need 1/2 of 1-C by mid March, 1/2 of 1-C by mid April, the rest (1-A + tooling) by end June Status : price inquiery launched. Need conscious effort.
• Storage: space and tooling Status : storage tooling 3-d desgin made, gave go-ahead • 10 more PS packs, and then 20 more PS packs by April• DCS sensors, cables
TGC1-C + 1-A series production
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In order that it somehow works
• Components have to be delivered in time Status : Design not completely finished Strategy for contract
• Services Status : Design not finished
TGC2/3 series production
Ideally, better start assembly as soon as 1-C are finished June/July 2005.But, unlikely to have all above be ready by then.Therefore 1-A is inserted after 1-C assembly.Nevertheless, fall 2005 is not very far !!
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A few things which are not very clear. would like to learn with the 1st sector. need preparation/consideration by then.
• Assembly procedure in general• Access to height: what kind of tools are needed• Test procedure Gas : perhaps, fairly clear? Readout : starting to play with 5-10 PS-packs
be prepared to 2 independent test set-ups ? (2 sites working in parallel)
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Chamber installation
• max height to reach is ~7m (TGC-1, bracket T9)• max height difference to access at a time is ~2 m (T9)• max horizontal distance to access at a time is ~2.5m (T3/T6)• height varies as a function of horizontal position
Not obvious what kind of lifting device is optimum
Scaffold, scissors lift, cherry picker just one, or combination of two?
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stabilizer bar
wallWall of concrete blocks
5.1m
4.3m
1m
The Storage tooling
Random access is not foreseen : order of assembly is important
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75cm
100cm
With this pitch,the total width of storagefor 6 sectors is ~ 12 m
We will need access to Install PS packs
Scaffold, scissors lift ?
4.3m
5.1m
Height of PS-pack is~5.7m
Space is 75-100cm(depending on installation)
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• Preparation of TGC-1 surface assembly is in progress• To watch TGC-2/3• very little or no margin in space-time
Schedule of near Future
• mid Jan: TV conf with Israel (Meir, Erez, Ishino, TK, ….)• End Jan: Chamber handling week (+Ochi, Tanaka, Ishino,…)• End Jan.-beg.Feb : b180 preparation week (Meir, Erez, MI, TK, ..• Mid Feb.: 3 technicians from Israel at CERN (+ Meir for a few week
Man power
4 technicians ( payed by Japan) + 4 technicians ( payed by TCn)+ physicists (to plan)
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Future is not that far