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Single Crystal and Large Grain Niobium Research at Michigan State University [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 2007.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators
Thomas Jefferson National Accelerator Facility (U.S.), United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
As Superconducting Radio Frequency (SRF) technology is used in more accelerator designs, research has focused on increasing the efficiency of these accelerators by pushing gradients and investigating cast reduction options. Today, most SRF structures are fabricated from high purity niobium. Over years of research, a material specification has been derived that defines a uniaxial, fine gain structure for SRF cavity fabrication. Most recently a push has been made to investigate the merits of using single or large grain niobium as a possible alternative to fine grain niobium. Michigan State University (MSU), in collaboration with Fermi National Accelerator Laboratory (FNAL) and Thomas Jefferson National Accelerator Facility (JLAB), is researching large grain niobium via cavity fabrication processes end testing, as well as exploring materials science issues associated with recrystallization and heat transfer. Single-cell 1.3 GHz (Beta=0.081) cavities made from both fine end large grain niobium were compared both in terms of fabrication procedures and performance. Two 7-cell cavities are currently being fabricated.
Report Numbers
E 1.99:jlab-aco-07-710
E 1.99: doe/er/40150-4324
doe/er/40150-4324
jlab-aco-07-710
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Note
Published through SciTech Connect.
09/01/2007.
"jlab-aco-07-710"
" doe/er/40150-4324"
Single Crystal Niobium Technology Workship, Araxá, Brazil, October 30-November 1, 2006.
Peter Kneisel; Matt Johnson; Claire Antoine; Terry Grimm; Walter Hartung; Chris Compton; Ahmad Aizaz; Derek Baars; Tom Bieler; John Bierwagen; Steve Bricker; Hairong Jiang; John Popielarski; Laura Saxton; Bob Wagner.
Funding Information
AC05-84ER40150
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