Test results of [beta]=0.64, 700 MHZ, 5-cell elliptical cavities

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Six 5-cell superconducting elliptical cavities have been fabricated at LANL and in industry and tested at LANL and TJNAF. The APT (Accelerator Production of Tritium) specification requires Qo > 5 x 109 at an accelerating field of 5 MV/m. So far, the results of vertical tests have shown maximum accelerating fields of 12 MV/m (peak surface field of 41 MV/m and 835 Oe ) and maximum Q0 of 3.6 x 1010 at 2 K (2.1 x 1010 at Eacc = 5 MV/m). The present limitations are available input power, field emission and quench. With a new 600 W amplifier and ... continued below

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5 p.

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Chan, K. D. (Kwok-Chi D.); Edwards, R. L. (Randall L.); Gentzlinger, R.C. (Robert C.); Haynes, W. B. (William B.); Kelley, J. P. (John Patrick); Krawczyk, F. L. (Frank L.) et al. January 1, 2001.

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Description

Six 5-cell superconducting elliptical cavities have been fabricated at LANL and in industry and tested at LANL and TJNAF. The APT (Accelerator Production of Tritium) specification requires Qo > 5 x 109 at an accelerating field of 5 MV/m. So far, the results of vertical tests have shown maximum accelerating fields of 12 MV/m (peak surface field of 41 MV/m and 835 Oe ) and maximum Q0 of 3.6 x 1010 at 2 K (2.1 x 1010 at Eacc = 5 MV/m). The present limitations are available input power, field emission and quench. With a new 600 W amplifier and a mapping system for surface temperature and x-ray radiation, we are trying to identify and localize the emission/quench source(s) to further improve the cavity performance.

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5 p.

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  • "Submitted to: 10th Workshop on RF Superconductivity, Tsukuba, Japan, September 6-11, 2001"

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  • Report No.: LA-UR-01-5049
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975737
  • Archival Resource Key: ark:/67531/metadc927473

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  • January 1, 2001

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 1:39 p.m.

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Chan, K. D. (Kwok-Chi D.); Edwards, R. L. (Randall L.); Gentzlinger, R.C. (Robert C.); Haynes, W. B. (William B.); Kelley, J. P. (John Patrick); Krawczyk, F. L. (Frank L.) et al. Test results of [beta]=0.64, 700 MHZ, 5-cell elliptical cavities, article, January 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc927473/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.