WA104 Aluminum Cold Vessels A possible scenario

CAVEAT Definition of the experimental layout still under discussion within the ICARUS Collaboration (dimensions and geometry). All readout and pipes are assumed to be the one of today. Need to decide on final layout  For the moment (for this discussion) lets assume the layout of the existing ICARUS detector

To be constructed : two cold vessels with these dimensions

Strategy Construction in 6 steps: 1)Prepare all technical specs 2)Produce extruded Aluminum plates and corner plates of limited dimension with a press, move the pieces to an assembly firm 3)Assemble 8 x 20 m long walls with all the required holes and chamfers 4)Transfer the long walls to CERN 5)At CERN assemble the 2 cryostats 1New contract with an engineering firm (we have an offer) 2 & 3 can be the same contract (but not necessarily) 4Transport organized by CERN 5 to be done in bldg 185, contract welding to a firm, assembly with local manpower, contract for QA

2 & 3 Scenario : Extrusion firm produces : 350 basic panels (0.497 width), include spares 95 ml of corner pieces (~5.5 m), include spares Extrusion offer today ~400Keuro Extrusion firm passes the material to a second firm which assemble: 2 x 20m welded floor assemblies + corner piece +chamfers + feet holes 4 x 20m welded walls assemblies + corner piece + chamfers 2 x 20m welded roof assemblies + corner piece + chamfers + feedthrough holes 4 x 4m welded end caps + bolted flange Transport to CERN of the 8 large panels (20m), one/two special transports  1 single contract, 1 single MS + tender : need detailed construction drawings  Advantage : all geometrical parameters well defined (dimensions + planarity + tolerances  To be clarified : end doors assembly

Base material: extruded Aluminum profiles ~ 5.2 euro/kg Corner pieces : 2 x (4 x (4 x 5.5)) ~ kg/ml -> ~ 2.95 Tons ~ 15K+31K= 46 keuro Walls pieces : 2 x (4 x (40 )) ~ kg/m2 ~ -> 168 kg/panel ~ Tons = = 312 keuro m m Total ~ 400Keuro

2 & 3 & 4 Scenario summary : Assembly workshop - panels welding - panels machining To CERN bldg 185 Extrusion Firm

What arrives to CERN (4 pieces/vessel) ?

Step 5 assembly tools

Step 5 assembly step 5.1

Step 5 assembly step 5.2 welding

Step 5 assembly step 5.3 welding

Step 5 assembly step 5.4 welding