EuCARD-WP7-HFM meeting15 November 2011
Status of construction ofFRESCA2 dummy coilassembly
Attilio Milanese, Juan Carlos Perez
15 Nov. 2011, A. Milanese
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Hardware for FRESCA2
In progress:
•aluminium alloy shell raw material
•components for the “dummy coil assembly”
•cryostat
•aluminium oxide insulating coating
•Nb3Sn reaction oven
•winding tooling (layer 3-4)
•components for the external splices
•[superconducting cable]
To be done:
•components for the “coil pack”: islands, end shoes, wedges
•winding (layer 1-2)/ reaction / impregnation tooling
•assembly tooling
•cable insulation, traces and other instrumentation
15 Nov. 2011, A. Milanese
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Procurement of mechanical components
•All the components will be used for the real magnet, with theexception of the dummy coils, that are two blocks of Al alloy.
•The order for the Al alloy (AA 7175 T652) raw cylinder wasplaced mid Sept. 2011 in France. We agreed on alloycharacteristics and controls (material certificate, ultrasonicinspection, tensile test at room and cryogenic temperatures).The expected delivery is in mid Jan. 2012.
•The procurement of the other components has been split inthree lots, as follows:
•cold mass: half yokes, shell, keys and slipshims
•coil pack mock up: horizontal and vertical pads, coil mock-up
•axial compression system: end plate, rods, components forpre-tension at room temperature
15 Nov. 2011, A. Milanese
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Procurement of mechanical components
•On the basis of the call for tender, three firms are considered:
•cold mass: Spanish company
•coil pack mock up:Dutch company
•axial compression system: Finnish company
•We visited the Dutch and Spanish companies in Oct. 2011, todiscuss the details of the fabrication and to evaluate theirmanufacturing capabilities. In both cases the feedback ispositive. There is no need to visit the Finnish company.
•In all cases, the lead time from the placement of the order(which could be by the end of Nov. 2011, if the updateddrawings are ready) to delivery is around 3 ½ - 4 months.
•The sum of the three orders is ≈ 150 kEUR (without the Alcylinder, which is an extra ≈ 30 kEUR).
15 Nov. 2011, A. Milanese
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FRESCA2 cryostat
[from Arnaud Vande Craen, Pierre Minginette, Vladislav Benda]
•The conceptual design of the cryostat is finished.
•The engineering design is on-going, as well as the design of thecryogenic lines.
•The call for tenders for the components should be published atthe beginning of 2012. Also in that case the lot will be probablysplit in several parts.
•By end of 2012 all the components should be delivered at CERN.
•The cryostat should be operational at the beginning of 2013.
15 Nov. 2011, A. Milanese
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Others
•The feasibility of the aluminium oxide coating for the pieces ofFRESCA2 in contact with the coil is done. Our supplier gave us aquote for the plasma ceramic coating Al2O3 with bondcoat,coating thickness 0.1 – 0.2 mm.
•The order of the Nb3Sn reaction oven has been signed at theend of October. It will be manufactured by a German company.The working volume has been specified as 2500 × 600 × 500mm. It’s an argon furnace. The delivery is envisaged for end ofMay, beginning of June 2012 [Friedrich Lackner].
15 Nov. 2011, A. Milanese
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Study of splice layout
•The geometry of the Nb3Sn / Nb-Ti splice is being modelled indetail, as well as the Nb-Ti / Nb-Ti splices external to themagnet [Marc Timmins]
15 Nov. 2011, A. Milanese
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Thank you.