Paper |
Title |
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THPME122 |
A SQUID-based Beam Current Monitor for FAIR |
3524 |
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- R. Geithner, T. Stöhlker, W. Vodel
HIJ, Jena, Germany
- R. Geithner, R. Neubert, P. Seidel
FSU Jena, Jena, Germany
- F. Kurian, H. Reeg, M. Schwickert
GSI, Darmstadt, Germany
- T. Stöhlker
IOQ, Jena, Germany
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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.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-THPME122
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THPME103 |
Beam Current Monitors for FAIR |
3483 |
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- M. Schwickert, H. Bräuning, F. Kurian, H. Reeg, A. Reiter
GSI, Darmstadt, Germany
- R. Geithner, W. Vodel
HIJ, Jena, Germany
- R. Neubert
FSU Jena, Jena, Germany
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The FAIR (Facility for Antiproton and Ion Research) accelerator facility presently under construction at GSI will supply a wide range of beam intensities for physics experiments. Design beam intensities range from 2.5·1013 protons/cycle to be delivered to the pBar-target and separator for production of antiprotons, to beams of e.g. 109 ions/s in the case of slowly extracted beams. The large intensity range demands for dedicated beam current monitors for precise, non-destructive beam intensity measurements in the synchrotrons, transport lines and storage rings of the FAIR facility. This report describes GSI developments of purpose-built beam current monitors for the SIS100 synchrotron and high-energy beam transport lines (HEBT) of FAIR. Prototype measurements with a SQUID-based Cryogenic Current Comparator and a resonant beam charge transformer are presented, and possibilities for further upgrades are discussed.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-THPME103
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Export • |
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※ Text/Word,
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