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TY - CPAPER AU - Keckert, S. AU - Kleindienst, R. AU - Knobloch, J. AU - Kugeler, O. TI - Design and First Measurements of an Alternative Calorimetry Chamber for the HZB Quadrupole Resonator J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - The systematic research on superconducting thin films requires dedicated testing equipment. The Quadrupole Resonator (QPR) is a specialized tool to characterize the superconducting properties of circular samples. A calorimetric measurement of the RF surface losses allows the surface resistance to be measured with sub nano-ohm resolution. This measurement can be performed over a wide temperature and magnetic field range, at frequencies of 433, 866 and 1300 MHz. The system at Helmholtz-Zentrum Berlin (HZB) is based on a resonator built at CERN and has been optimized to lower peak electric fields and an improved resolution. An alternative calorimetry chamber has been designed in order to provide flat samples for coating and to ease changing of samples. Furthermore it enables exchangeability of samples between the QPRs at HZB and CERN. With this poster the design and first measurements of the new calorimetry chamber is presented. PB - JACoW CY - Geneva, Switzerland SP - 739 EP - 743 KW - niobium KW - quadrupole KW - SRF KW - simulation KW - operation DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-TUPB067 UR - http://srf2015.vrws.de/papers/tupb067.pdf ER -