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TY - CONF AU - Geithner, R. AU - Kurian, F. AU - Neubert, R. AU - Reeg, H. AU - Schwickert, M. AU - Seidel, P. AU - Stöhlker, T. AU - Vodel, W. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - A SQUID-based Beam Current Monitor for FAIR J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - A Cryogenic Current Comparator (CCC) was developed for the upcoming FAIR-Project, providing a non-destructive online monitoring of the beam current in the nA-range. The CCC was optimized for a lowest possible noise-limited current resolution together with a high system bandwidth. Therefore, the low temperature properties of ferromagnetic core materials used in the pick-up coil were investigated and different SQUID-systems were tested. In this contribution we present results of the completed Cryogenic Current Comparator for FAIR working in a laboratory environment, regarding the improvements in resolution and bandwidth due to the use of suitable ferromagnetic core materials and optimized SQUID-system components. PB - JACoW CP - Geneva, Switzerland SP - 3524 EP - 3526 KW - pick-up KW - cryogenics KW - electronics KW - niobium KW - ion DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-THPME122 UR - http://jacow.org/ipac2014/papers/thpme122.pdf ER -