Published October 1, 2011
| Version v1
Report
Dissipative hydride precipitates in superconducting niobium cavities
Creators
- 1. Fermi National Accelerator Laboratory, Batavia, IL (United States)
- 2. Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- 3. Argonne National Laboratory, Argonne, IL (United States)
Description
We report the first direct observation of the microstructural features exhibiting RF losses at high surface magnetic fields of above 100 mT in field emission free superconducting niobium cavities. The lossy areas were identified by advanced thermometry. Surface investigations using different techniques were carried out on cutout samples from lossy areas and showed the presence of dendritic niobium hydrides. This finding has possible implications to the mechanisms of RF losses in superconducting niobium at all field levels.
Availability note (English)
Available from http://lss.fnal.gov/cgi-bin/find_paper.pl?pub-11-553.pdf; PURL: https://www.osti.gov/servlets/purl/1034826/Additional details
Identifiers
Publishing Information
- Imprint Pagination
- 9 p.
- Report number
- FERMILAB-PUB--11-553-TD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 43048628
- Subject category
- S43: PARTICLE ACCELERATORS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- FIELD EMISSION; HYDRIDES; MAGNETIC FIELDS; NIOBIUM; NIOBIUM HYDRIDES; RF SYSTEMS; SUPERCONDUCTING CAVITY RESONATORS
- Descriptors DEC
- CAVITY RESONATORS; ELECTRONIC EQUIPMENT; ELEMENTS; EMISSION; EQUIPMENT; HYDRIDES; HYDROGEN COMPOUNDS; METALS; NIOBIUM COMPOUNDS; REFRACTORY METAL COMPOUNDS; REFRACTORY METALS; RESONATORS; SUPERCONDUCTING DEVICES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS
Optional Information
- Contract/Grant/Project number
- AC02-07CH11359
- Notes
- Submitted to Applied Physics Lett.
- Funding organization
- DOE Office of Science (United States)