| Paper | Title | Page |
|---|
| TUP44 | Development and RF Test Results of a New HF and H2SO4 Free Electro Polishing Method for Superconducting Niobium Cavities | 227 |
| | - M. Pekeler, S. Bauer, H. Vogel
ACCEL - D. Reschke, J. Ziegler
DESY
| |
| | A new Electro Polishing method for superconducting
cavities using an acid mixture without hydrofluoric and
sulphuric acid was developed at ACCEL Instruments
GmbH based on an exclusive license from Poligrat GmbH
in Munich, Germany (patent pending). Two 1.3 GHz
single cell cavities were built and are used for
qualification of the new Electro Polishing method. After
the Electro Polishing at ACCEL, the cavities are
transported to DESY for RF testing. At DESY no further
surface removal by any means is done, but a high pressure
water rinsing is carried out. Very promising test results
were achieved right away. During the first RF test of the
first treated cavity, Q values above 2x10^10 and accelerating
gradients above 20 MV/m were measured at a helium
bath temperature of 1.8 K. | |
| WEP52 | SRF activities at ACCEL instruments | 612 |
| | - M. Pekeler, S. Bauer, M. Peiniger, P. vomStein, H. Vogel
ACCEL
| |
| | We report on the current activities and achievements in
the field of SRF technology at ACCEL Instruments.
During the last two years a wide range of projects
covering cavity and component production, cavity surface
preparation, SRF module development and construction
has been carried out. Details of the results will be
presented in the related papers. | |