Publications
Publication Information
| Title | Forged Ingot Niobium Technology for Accelerator Applications and Scientific Frontiers |
| Authors | G. Myneni, G. Ciovati, P. Dhakal, T. Dohmae, A. Fajardo, N. Lannoy, F. Marhauser, N. Miles, S. Michizono, R. Rimmer, T. Saeki, M. Yamanaka, K. Umemori, A. Yamamoto |
| JLAB number | JLAB-ACC-21-3611 |
| LANL number | (None) |
| Other number | DOE/OR/23177-6184 |
| Document Type(s) | (Meeting) |
| Category: | SRF Technology |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Meeting Abstract compiled for SRF 2021 | |
| Publication Abstract: | Accelerator applications and world?s science frontier programs demand high performance and cost-effective SRF technology. Fine-grain (FG) and Large-grain (LG) ingot niobium technologies have been developed and implemented. However, forged ingot niobium technology is the focus of this presentation which is cost-effective and expected to have several technical advantages. FG niobium sheet production involves more than ten processing steps making them prone to contamination. The LG disc production cost is significantly low compared to FG niobium sheet. However, there are draw backs due to non-homogeneity of the grain boundary distribution, resulting in non-uniform mechanical properties. Medium-grain (MG) niobium disk production may be realized with a new approach/process, the disc directly sliced from the forged ingot, involves a simpler process steps contributing major production cost reduction. These discs are expected to be superior as they tend to be homogeneous with uniform sub millimeter grains and mechanical properties. We will present MG Nb SRF accelerator technology characteristics and its use in world-wide scientific frontier programs and for distributed heat & energy sources. |
| Experiment Numbers: | |
| Group: | SRF Research & Dev |
| Document: | docx |
| DOI: | |
| Accepted Manuscript: | |
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