TGC Big wheel Sector assembly plan

12.23.2004 Tatsuo Kawamoto

ATLAS workshop 2005

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

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

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

b180

2nd site(somewhere) 1st site

Assembly + storage

Surface assembly site

Horizontal+ tilt

Vertical

storage

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

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

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 !!

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)

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?

stabilizer bar

wallWall of concrete blocks

5.1m

4.3m

1m

The Storage tooling

Random access is not foreseen : order of assembly is important

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)

• 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)

Future is not that far