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Title: Comparison of buffered chemical polished and electropolished 3.9 GHz cavities

Conference ·
OSTI ID:967170

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.

Research Organization:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-07CH11359
OSTI ID:
967170
Report Number(s):
FERMILAB-CONF-09-482-AD-TD; TRN: US0904311
Resource Relation:
Conference: Presented at 14th International Conference on RF Superconductivity, Berlin, Germany, 20-25 Sep 2009
Country of Publication:
United States
Language:
English

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