NDLI: Structure for an LHC 90 mm Nb/sub 3/Sn quadrupole magnet

Content Provider	IEEE Xplore Digital Library
Author	Hafalia, A.R. Caspi, S. Bartlett, S.E. Dietderich, D.R. Ferracin, P. Gourlay, S.A. Hannaford, C.R. Higley, H. Lietzke, A.F. Lau, B. Liggins, N. Mattafirri, S. McInturff, A.D. Nyman, M. Sabbi, G.L. Scanlan, R.M. Swanson, J.
Copyright Year	2002
Abstract	A full-scale mechanical model of the LHC Nb/sub 3/Sn quadrupole magnet structure has been designed, built and tested. The structure will support a 90 mm bore, lm long magnet prototype as part of the US LHC Accelerator Research Program (LARP). The structure utilizes Bladder and Key Technology to control and transfer pre-stress from an outer aluminum shell to an inner coil. Axial aluminum rods take care of pre-stress at the ends-ensuring that the coil is fully constrained along all three axes. The outer aluminum shell and an inner "dummy coil" (aluminum tube) were extensively instrumented with strain gauges. The gauges were used to monitor and map the effectiveness of the stress relation between the loading structure and a "dummy" coil through varying mechanical load conditions-from bladder and key pre-stress at room temperature through cool-down. Test results of the stress distribution in the structure and the in dummy coil is reported and compared with expected results calculated with the structural analysis program ANSYS.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1444
Ending Page	1447
Page Count	4
File Size	1554877
File Format	PDF
ISSN	10518223
Volume Number	15
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Large Hadron Collider Niobium Coils Aluminum Testing Bladder Stress Tin Boring Prototypes quadrupole Bladders keys
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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