Fabrication and testing of a high field dipole mechanical model

Citation
N. Andreev et al., Fabrication and testing of a high field dipole mechanical model, IEEE APPL S, 10(1), 2000, pp. 314-317
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
1051-8223 → ACNP
Volume
10
Issue
1
Year of publication
2000
Pages
314 - 317
Database
ISI
SICI code
1051-8223(200003)10:1<314:FATOAH>2.0.ZU;2-B
Abstract
As a first step towards the development of a high field Nb3Sn superconducti ng dipole for a Very Large Hadron Collider (VLHC), a short mechanical model was built and tested at Fermilab, The aim of this work was to develop simp ler fabrication techniques and test new structural materials to use in the dipole model. The coil design was based on a two-layer, cos(theta) approach . The end parts were designed using ROXIE magnet optimization program and m anufactured using a 6-axis EDM machine. The two layers of each half-coil we re wound using one piece of cable without any interlayer splices. After win ding, a ceramic matrix was applied to the each half-coil and the coil was c ured under compression at 150 degrees C. The two half-coils were then assem bled together in a reaction fixture for heat treatment at 450 degrees C for 8 hours. After reaction, the coils were placed in a curing fixture for epo xy impregnation. Finally some mechanical and electrical tests were performe d after which the coils were sectioned to check the cable positioning and i mpregnation quality. This paper summarizes the results and experience obtai ned from the mechanical model.