1 ECAL assembly constraints on the assembly hall

1 ECAL assembly, constraints on the assembly hall Slightly reviewed from the presentation at ALCW 2015 Presented by H Videau Laboratoire Leprince-Ringuet École polytechnique Reference : Ecal integration studies Barrel & endcaps Catherine Clerc, LLR-In 2 p 3 -École polytechnique Marc Anduze, LLR-In 2 p 3 -École polytechnique Denis Grondin, LPSC-IN 2 P 3 Grenoble Kyushu March 2012 Henri Videau Integration meeting, Orsay Octobre 2015

2 Reminder of sizes and weights in the ECal baseline The new models are smaller and lighter. Henri Videau Integration meeting, Orsay Octobre 2015

3 Elements of the ECal structure : Barrel: modules (5 per stave) and staves (octants) End caps: modules (3 per quadrant) and quadrants Inserting slabs : the detecting units made of a tungsten core and two detecting layers one on each side. They are slit into alveoli of the modules structures Henri Videau Integration meeting, Orsay Octobre 2015

4 Path of assembly Caveat: the numbers are very rough We consider as unreasonable to import to the site staves or quadrants already equipped → import and store independently structure modules, slabs The modules and slabs being made, assembled, in the manufacturing country Barrel Then we will import 40 module structures with their transport and storage boxes, of size L, l, H = 2 x 0. 6 x 1. 3 m 3 ground occupation : they have to be checked by eye and stored 1. 2 m² x 40 = 48 m² + 50 m² passage waiting to be assembled in staves. about 100 m² we will import the slabs, in their transport boxes, entirely equipped and checked 15 per alveolus gives: 15 x 40 = 3000 slabs in about 200 boxes, 250 kg each box size: L, H, l = 2 x 0. 3 x 0. 25 = 0. 15 m 3 area: 0. 5 m² → 100 m² can probably be piled-up by 4 → 50 x 2 x 0. 25 = 25 m² + access 3 m wide for the tooling ~35 m² storage about 60 m² they have to be fully tested for reception ( 3 days with acquisition) (30 in parallel)(1 year? ) then wait for mounting in the staves testing space: 40 m² Slab storage and testing areas should be adjacent, Location: ILC campus No need for crane Total: 100 + 60 + 40 = 200 m² Henri Videau Integration meeting, Orsay Octobre 2015

5 we consider assembling staves from 5 modules on a cradle where the slabs can be inserted the cooling and cabling installed with the electronics and cooling up to close by patch panels position to be found, interference with Hcal? The staves are then stored and fully tested electronically and with cosmics (needs acquisition and cooling ), calibration They are ready for installation in the HCal after completion of the test space needed For a stave assembly in 2 batches of 4 : 7 x 6 m² for 4 : 200 m² for storage and testing (per cradle ): 7 x 4 m² for 4 : 120 m² may use the space left by the modules and slabs (at least the test space) but we have the empty structure and slab boxes to store The slabs storage area should be adjacent, we need a 15 t crane Total 320 m² +200 → 500 m² We should provide a drawing of the area From then transportation to pit Location: ILC campus Henri Videau Integration meeting, Orsay Octobre 2015

6 Cabling path A reminder Patch panels: Space Not far Easy access From barrel on barrel From EC on EC unlikely Henri Videau Integration meeting, Orsay Octobre 2015

7 Module assembly and slabs insertion to make a stave Double click on the image To start the video Henri Videau Integration meeting, Orsay Octobre 2015

8 Path of assembly We consider that, in the assembly hall, the central yoke ring has been mounted, (muon chambers? ) the coil installed, the Hcal barrel inserted and fully equipped up to patch panels and surveyed. No additional space is needed for ECal (probably), the space left by the Hcal should be enough First the female rails have to be mounted on the HCal Each stave is then installed the stave beam is put on a wheel to be presented in front of the Hcal slot and then drawn in. It is still not decided if the cables and services run all on one side. Would be better Services are connected to the patch panels. Define where they will go. Tests are run as soon as the DAQ is ready. A precise survey can be done, in particular if the SET hangs from the ECal Then this ensemble is lowered down in the cavern alternatively all this could be done in the cavern Request for the assembly hall: Space for assembling the tooling Henri Videau Integration meeting, Orsay Octobre 2015

9 Installing the fully equipped staves into the HCal barrel Double click on the image To start the video Henri Videau Integration meeting, Orsay Octobre 2015

10 Description of the tooling: big cradle to be used also by the HCal rotating wheel and sliding tool for ECal only From CMS including colours This will be used in the assembly hall but has to be assembled and stored - on the ILC campus if adequate transportation - or assembly hall but at what time should it be available for how long? Volume of the cradle: 6 x 6 x 6 m 3 need 3 times the space for assembling: 100 m² Weight estimated around 100 t Henri Videau Integration meeting, Orsay Octobre 2015

11 Path of assembly This was for the barrel in the baseline model A similar task is done by Denis for the end caps (see his presentation) but needs to know the HCal end cap structure and assembly. Here too the module structures (24 only but bigger) and the slabs are independently imported have to be checked and stored The Hcal end caps should have been assembled as a full disk for the ECal to be installed. An horizontal mounting could be considered. Should take almost the same area (500 m²) as for the barrel Henri Videau Integration meeting, Orsay Octobre 2015

12 Somewhat similar for the alternative models Transportation requirements If the assembly of the staves and quadrants is done not at the pit but on the ILC campus a specific transportation system (10 t staves + cradle) (6 t quadrants + cradle) has to be conceived. The cradles should weight few tons (2 -3? ). A 15 t transport system should do the job. Only the insertion on the Hcal would then be done at the pit : reserve space for (mounting and) storing the tooling. Miscellaneous Where to dispose of the transportation boxes, to be discarded? When can we release the spaces? What about the dismantling? Henri Videau Integration meeting, Orsay Octobre 2015

13 Conclusions We need for ECal about 1000 m² at the ILC campus The request by Yasuhiro to halve that space by plus at the assembly hall - space for mounting (already requested by HCal) building end cap and barrel one after the other has to be studied with a clear idea of the - space for mounting and storing the tooling, time allowed and needed. if it cannot be transported. How much money do we save? Part of it already for HCal Should’nt we do that discussion later when we know better the overall sketch? An ECal assembly detailed design implies - to know grossly the assembly procedure of the yoke, coil and Hcal, - to have solved some interface problems with the HCal. We should (will) make a comprehensive description, a technical note with drawings, with space and tooling requested, time chart, movements, people. Henri Videau Integration meeting, Orsay Octobre 2015