Assembly Tests of the First Nb ₃ Sn Low-Beta Quadrupole Short Model for the Hi-Lumi LHC

Journal Article · 17 January 2016 · IEEE Transactions on Applied Superconductivity

DOI: https://doi.org/10.1109/TASC.2016.2516584 · OSTI ID:1260271

Pan, H. ^[1]; Felice, H. ^[2]; Cheng, D. W. ^[1]; Anderssen, E. ^[1]; Ambrosio, G.  ^[3]; Perez, J. C. ^[4]; Juchno, M. ^[4]; Ferracin, P. ^[4]; Prestemon, S. O. ^[1]

---

1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
2. French Atomic Energy Commission, Saclay (France)
3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
4. European Organization for Nuclear Research (CERN), Geneva (Switzerland)

In preparation for the high-luminosity upgrade of the Large Hadron Collider (LHC), the LHC Accelerator Research Program (LARP) in collaboration with CERN is pursuing the development of MQXF: a 150-mm-aperture high-field Nb3Sn quadrupole magnet. Moreover, the development phase starts with the fabrication and test of several short models (1.2-m magnetic length) and will continue with the development of several long prototypes. All of them are mechanically supported using a shell-based support structure, which has been extensively demonstrated on several R&D models within LARP. The first short model MQXFS-AT has been assembled at LBNL with coils fabricated by LARP and CERN. In our paper, we summarize the assembly process and show how it relies strongly on experience acquired during the LARP 120-mm-aperture HQ magnet series. We also present comparison between strain gauges data and finite-element model analysis. Finally, we present the implication of the MQXFS-AT experience on the design of the long prototype support structure.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• Grant/Contract Number: AC02-05CH11231; AC02-07CH11359
• OSTI ID: 1260271
• Report Number(s): FERMILAB-PUB-16-060-TD; 1466578
• Journal Information: IEEE Transactions on Applied Superconductivity, Journal Name: IEEE Transactions on Applied Superconductivity Journal Issue: 4 Vol. 26; ISSN 1051-8223
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)Copyright Statement
• Country of Publication: United States
• Language: English