JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Tympel, V. AU - Crescimbeni, L. AU - Haider, D.M. AU - Machalett, F. AU - Schmelz, M. AU - Schmidl, F. AU - Schwickert, M. AU - Schönau, T. AU - Seidel, P. AU - Sieber, T. AU - Stolz, R. AU - Stöhlker, T. AU - Zakosarenko, V. ED - Forck, Peter ED - Wawrzyniak, Adriana ED - Schaa, Volker R.W. ED - Kowalski, Grzegorz W. ED - Cudek, Agnieszka (SOLARIS, Kraków TI - Creation of the First High-Inductance Sensor of the New CCC-Sm Series J2 - Proc. of IBIC2022, Kraków, Poland, 11-15 September 2022 CY - Kraków, Poland T2 - International Beam Instrumentation Conference T3 - 11 LA - english AB - Cryogenic Current Comparators (CCC) are presently used at CERN-AD (100 mm beamline diameter) and in the FAIR project at CRYRING (150 mm beamline diameter) for non-destructive absolute measurement of beam currents below 20 ’A (current resolution 10 nA). Both sensor versions (CERN-Nb-CCC and FAIR-Nb-CCC-XD) use niobium as superconductor for the DC-transformer and magnetic shielding. The integrated flux concentrators have an inductance of below 100 ’H at 4.2 Kelvin. The new Sm-series (smart & small) is designed for a beamline diameter of 63 mm and uses lead for the superconducting shield. The first sensor (IFK-Pb-DCCC-Sm-200) has two core-based pickup coils (2x 100 µH at 4.2 K) and two SQUID units, to eliminate Barkhausen current jumps as part of the low frequency 1/f-noise. During the construction some basic experiments on noise behavior (fluctuation’dissipation theorem, white noise below 2 pA/sqrt(Hz)) and magnetic shielding (flux concentrator and shielding as LC circuit resonance , additional mu-metal shielding) were undertaken, the results of which are presented here. Finally, a current resolution of 500 pA could be achieved in the laboratory. PB - JACoW Publishing CP - Geneva, Switzerland SP - 469 EP - 472 KW - shielding KW - pick-up KW - cryogenics KW - resonance KW - antiproton DA - 2022/12 PY - 2022 SN - 2673-5350 SN - 978-3-95450-241-7 DO - doi:10.18429/JACoW-IBIC2022-WEP30 UR - https://jacow.org/ibic2022/papers/wep30.pdf ER -