Fabrication of Niobium Cavities Directly from Large Grain Ingot

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-09ER85278
Agency Tracking Number: 91099
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solicitation Year: 2008
Solicitation Topic Code: 37 a
Solicitation Number: DE-PS02-08ER08-34
Small Business Information
1012 N. Walnut Street, Lansing, MI, 48906
DUNS: 621290001
HUBZone Owned: Y
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Terry Grimm
 (517) 999-3475
Business Contact
 Jerry Hollister
Title: Dr.
Phone: (517) 230-7417
Email: hollister@niowaveinc.com
Research Institution
A key impediment to the broader use and acceptance of superconducting linear accelerators has been the cost, both financial and time, of developing niobium superconducting radio frequency (SRF) structures. In the present fabrication method, the dominant costs are (1) the procurement of fine grain bulk niobium and (2) electron beam welding. This project will develop a new fabrication method for SRF cavities that greatly reduces the cost and time to deliver the cavity. The new fabrication method will use traditional metal forming techniques to shape cavity components directly from a niobium large grain ingot. This approach would eliminate the need for fine grain niobium sheet metal and would greatly reduce the number of electron beam welds necessary to fabricate SRF cavities. Phase I will develop ingot forming methods, prototype a 1.3 GHz dumbbell from a single piece of large grain ingot material, and measure the frequency to verify that dimensional tolerances are met. End cells could then be added to further check the dumbbell as a two cell cavity. Phase II would prototype the end assemblies, and build and test two 9-cell ILC cavities. Commercial Applications and other Benefits as described by the awardee: The proposed fabrication methods have the potential to cut cost and development time by half or more. The inexpensive ingot-formed cavities could be marketed to the international accelerator community.

* Information listed above is at the time of submission. *

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