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Mechanical properties of niobium radio-frequency cavities

Journal Article · · Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
 [1];  [2];  [2];  [2];  [3];  [3];  [3];  [3]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA
  3. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
+ Show Author Affiliations

Radio-frequency cavities made of bulk niobium are one of the components used in modern particle accelerators. The mechanical stability is an important aspect of cavity design, which typically relies on finite-element analysis simulations using material properties from tensile tests on sample. This contribution presents the results of strain and resonant frequency measurements as a function of a uniform pressure up to 722 kPa, applied to single-cell niobium cavities with different crystallographic structure, purity and treatments. In addition, burst tests of high-purity multi-cell cavities with different crystallographic structure have been conducted up to the tensile strength of the material. Finite-element analysis of the single-cell cavity geometry is in good agreement with the observed behavior in the elastic regime assuming a Young's modulus value of 88.5 GPa and a Poisson's ratio of 0.4, regardless of crystallographic structure, purity or treatment. However, the measured yield strength and tensile strength depend on crystallographic structure, material purity and treatment. In particular, the results from this study show that the mechanical properties of niobium cavities with large crystals are comparable to those of cavities made of fine-grain niobium.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-06OR23177
OSTI ID:
1222197
Alternate ID(s):
OSTI ID: 1422676
OSTI ID: 22479406
Report Number(s):
JLAB-ACC--15-2015; DOE/OR/23177-3387; PII: S0921509315301490
Journal Information:
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing, Journal Name: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing Journal Issue: C Vol. 642; ISSN 0921-5093
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (17)

Quality requirements and control of high purity niobium for superconducting RF cavities journal April 2003
On mechanical properties of the superconducting niobium journal November 2006
Review of ingot niobium as a material for superconducting radiofrequency accelerating cavities
  • Kneisel, P.; Ciovati, G.; Dhakal, P.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 774 https://doi.org/10.1016/j.nima.2014.11.083
journal February 2015
Variation of mechanical properties of high RRR and reactor grade niobium with heat treatments journal January 2003
Elasto-Plastic Behavior of High RRR Niobium: Effects of Crystallographic Texture, Microstructure and Hydrogen Concentration
  • Myneni, G. R.
  • HYDROGEN IN MATERIALS & VACUUM SYSTEMS: First International Workshop on Hydrogen in Materials and Vacuum Systems, AIP Conference Proceedings https://doi.org/10.1063/1.1597371
conference January 2003
Physical and Mechanical Properties of Niobium for SRF Science and Technology conference January 2007
Investigations of Residual Stresses and Mechanical Properties of Single Crystal Niobium for SRF Cavities
  • Gnäupel-Herold, Thomas; Myneni, Ganapati Rao; Ricker, Richard E.
  • SINGLE CRYSTAL - LARGE GRAIN NIOBIUM TECHNOLOGY: International Niobium Workshop, AIP Conference Proceedings https://doi.org/10.1063/1.2770678
conference January 2007
Pure Niobium as a Pressure Vessel Material
  • Peterson, T. J.; Carter, H. F.; Foley, M. H.
  • TRANSACTIONS OF THE CRYOGENIC ENGINEERING CONFERENCE—CEC: Advances in Cryogenic Engineering, AIP Conference Proceedings https://doi.org/10.1063/1.3422438
conference January 2010
Tensile Tests of Niobium Material for srf Cavities
  • Wu, G.; Dhanaraj, N.; Cooley, L.
  • TRANSACTIONS OF THE CRYOGENIC ENGINEERING CONFERENCE—CEC: Advances in Cryogenic Engineering, AIP Conference Proceedings https://doi.org/10.1063/1.3422440
conference January 2010
Physical and mechanical metallurgy of high purity Nb for accelerator cavities journal March 2010
Development of large grain cavities journal January 2013
Effect of high temperature heat treatments on the quality factor of a large-grain superconducting radio-frequency niobium cavity journal April 2013
Superconducting TESLA cavities journal September 2000
Mechanical Properties of High RRR Niobium With Different Texture journal June 2007
Development of Superconducting Cavities of Cylindrical Symmetry at Cornell journal August 1983
Superconducting Radio-Frequency Systems for High-β Particle Accelerators journal January 2012
Uncertainties Associated with Strain-Measuring Systems Using Resistance Strain Gauges journal September 2010

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Superconducting radio-frequency cavities made from medium and low-purity niobium ingots journal April 2016

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36 MATERIALS SCIENCE
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