Paper | Title | Page |
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TUPO046 | Results on Large Grain Nine-Cell Cavities at DESY: Gradients up to 45 MV/m after Electropolishing | 490 |
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Since 2009 a series of eight nine-cell cavities (AC151 – AC158) of TESLA shape fabricated of large grain (LG) niobium material is under preparation and test at DESY. In a first step all cavities were tested after a BCP treatment. In a second step additional electro polishing is applied to all cavities. In this paper the treatment will be discussed and present results will be reported | ||