Comparison of buffered chemical polished and electropolished 3.9 GHz cavities

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Five 3.9 GHz 9 cell cavities have been measured for the DESY FLASH module. These cavities were BCP processed and reached gradients of typically about 25 MV/m with Q drop starting at about 20 MV/m. Recently a few one cell cavities have been processed with EP and at least one has tested to a gradient of 30 MV/m with Q drop starting at about 25 MV/m. We will compare the results and give an update to the thermal analysis in relation to global thermal breakdown at 3.9 GHz.

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5 pages

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Edwards, Helen; Cooper, Charlie A.; Ge, Mingqi; Gonin, Ivan V.; Harms, Elvin R.; Khabiboulline, Timergali N. et al. October 1, 2009.

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Five 3.9 GHz 9 cell cavities have been measured for the DESY FLASH module. These cavities were BCP processed and reached gradients of typically about 25 MV/m with Q drop starting at about 20 MV/m. Recently a few one cell cavities have been processed with EP and at least one has tested to a gradient of 30 MV/m with Q drop starting at about 25 MV/m. We will compare the results and give an update to the thermal analysis in relation to global thermal breakdown at 3.9 GHz.

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5 pages

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  • Presented at 14th International Conference on RF Superconductivity, Berlin, Germany, 20-25 Sep 2009

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  • Report No.: FERMILAB-CONF-09-482-AD-TD
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 967170
  • Archival Resource Key: ark:/67531/metadc933598

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  • October 1, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 22, 2016, 11:05 p.m.

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Edwards, Helen; Cooper, Charlie A.; Ge, Mingqi; Gonin, Ivan V.; Harms, Elvin R.; Khabiboulline, Timergali N. et al. Comparison of buffered chemical polished and electropolished 3.9 GHz cavities, article, October 1, 2009; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc933598/: accessed December 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.