22-27 September 2019
Hyatt Regency Hotel Vancouver
Canada/Pacific timezone

Tue-Af-Po2.18-03 [35]: HL-LHC D2 Short model recombination dipole cold test results and analysis

24 Sep 2019, 14:00
Level 2 Posters 1

Level 2 Posters 1


Arnaud Pascal Foussat (CERN)


The new D2 recombination superconducting dipole is a key two-in-one NbTi magnet with a 105 mm bore aperture for the LHC high luminosity upgrade project (HL-LHC) expected in operation from 2024. A short model magnet of 1.6 m magnetic length has been designed by INFN (Genova), built by Ansaldo Superconductors Group, and cold tested at CERN within a INFN-CERN collaboration framework. This model magnet features novel magnetic and mechanical design elements, which include the cancellation of unwanted cross-talk field multipoles through asymmetric coils, aluminium alloy collar pack preloading rings and a peculiar axial structure design. The future series of four 8.5 m long full-length dipole magnets shall be installed on both sides of ATLAS and CMS interaction points with an integral field of 35 T.m and 4.5 T bore magnetic field
This paper shall present the first power test mechanical results including training, protection, and field quality. Short model results will give a relevant feedback on the prototype construction and the series production.

Primary author


Prof. Pasquale Fabbricatore (INFN e Universita Genova (IT)) Juan Carlos Perez (CERN) Stefania Farinon (INFN e Universita Genova (IT)) BARBARA CAIFFI (INFN - National Institute for Nuclear Physics) Franco Julio Mangiarotti (CERN) Mr Roberto Cereseto (INFN Genova) Andrea Bersani (INFN e Universita Genova (IT)) Mr Oussama Id’Bahmane (CERN) Dr Filippo Levi (INFN Genova) Thomas Sahner (CERN) Marta Bajko (CERN) Ezio Todesco (CERN)

Presentation Materials