Apparatus and process for passivating an SRF cavity
Abstract
An apparatus and process for the production of a niobium cavity exhibiting high quality factors at high gradients is provided. The apparatus comprises a first chamber positioned within a second chamber, an RF generator and vacuum pumping systems. The process comprises placing the niobium cavity in a first chamber of the apparatus; thermally treating the cavity by high temperature in the first chamber while maintaining high vacuum in the first and second chambers; and applying a passivating thin film layer to a surface of the cavity in the presence of a gaseous mixture and an RF field. Further a niobium cavity exhibiting high quality factors at high gradients produced by the method of the invention is provided.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1164667
- Patent Number(s):
- 8903464
- Application Number:
- 12/925,503
- Assignee:
- Jefferson Science Associates, LLC (Newport News, VA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- DOE Contract Number:
- AC05-06OR23177
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2010 Oct 23
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; 36 MATERIALS SCIENCE
Citation Formats
Myneni, Ganapati Rao, and Wallace, John P. Apparatus and process for passivating an SRF cavity. United States: N. p., 2014.
Web.
Myneni, Ganapati Rao, & Wallace, John P. Apparatus and process for passivating an SRF cavity. United States.
Myneni, Ganapati Rao, and Wallace, John P. Tue .
"Apparatus and process for passivating an SRF cavity". United States. https://www.osti.gov/servlets/purl/1164667.
@article{osti_1164667,
title = {Apparatus and process for passivating an SRF cavity},
author = {Myneni, Ganapati Rao and Wallace, John P},
abstractNote = {An apparatus and process for the production of a niobium cavity exhibiting high quality factors at high gradients is provided. The apparatus comprises a first chamber positioned within a second chamber, an RF generator and vacuum pumping systems. The process comprises placing the niobium cavity in a first chamber of the apparatus; thermally treating the cavity by high temperature in the first chamber while maintaining high vacuum in the first and second chambers; and applying a passivating thin film layer to a surface of the cavity in the presence of a gaseous mixture and an RF field. Further a niobium cavity exhibiting high quality factors at high gradients produced by the method of the invention is provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {12}
}
Works referenced in this record:
Process for the manufacture of NbN superconducting cavity resonators
patent, August 1989
- Halbritter, Jürgen; Baumgärtner, Hartmut
- US Patent Document 4,857,360
Superconducting accelerating tube and a method for manufacturing the same
patent, August 1993
- Sakano, Misao; Mukoyama, Shinichi; Shimano, Takeshi
- US Patent Document 5,239,157
Passivated niobium cavities
patent, December 2006
- Myneni, Ganapati Rao; Hjörvarsson, Björgvin; Ciovati, Gianluigi
- US Patent Document 7,151,347