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1.
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Comparative Measurement and Characterisation of Three Cryogenic Current Comparators Based on Low-Temperature Superconductors
/ Tympel, Volker (Helmholtz Inst., Jena) ; De Gersem, Herbert (Darmstadt, Tech. Hochsch.) ; Fernandes, Miguel (Cockcroft Inst. Accel. Sci. Tech. ; CERN ; U. Liverpool (main)) ; Golm, Jessica (U. Jena (main)) ; Haider, David (Darmstadt, GSI) ; Kurian, Febin (Darmstadt, GSI) ; Marsic, Nicolas (Darmstadt, Tech. Hochsch.) ; Müller, Wolfgang (Darmstadt, Tech. Hochsch.) ; Neubert, Ralf (U. Jena (main) ; TLS, Tautenburg) ; Schmelz, Matthias (Inst. Photonic Tech., Jena) et al.
A Cryogenic Current Comparator (CCC) is a non-destructive, metrological-traceable charged particle beam intensity measurement system for the nano-ampere range. Using superconducting shielding and coils, low temperature Superconducting Quantum Interference Devices (SQUIDs) and highly permeable flux-concentrators, the CCC can operate in the frequency range from DC to several kHz or hundreds of kHz depending on the requirement of the application. [...]
JACoW, 2019 - 4 p.
- Published in : 10.18429/JACoW-IBIC2018-MOPC06
Published fulltext: PDF;
In : 7th International Beam Instrumentation Conference, Shanghai, China, 9 - 13 Sep, 2018, pp.MOPC06
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2.
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Different versions of Cryogenic Current Comparators with magnetic core for beam current measurements
/ Golm, Jessica (Jena U. ; Helmholtz Inst., Jena) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Fernandes, Miguel (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Haider, David (Darmstadt, GSI) ; Kurian, Febin (Darmstadt, GSI) ; Marsic, Nicolas (Darmstadt, Tech. U.) ; Müller, Wolfgang (Darmstadt, Tech. U.) ; Neubert, Ralf (Jena U. ; TLS, Tautenburg) ; Schmelz, Matthias (Inst. Photonic Tech., Jena) ; Schmidl, Frank (Jena U.) et al.
For more than 20 years Cryogenic Current Comparators (CCC) are used to measure the current of charged particle beams with low intensity (nA-range). The device was first established at GSI in Darmstadt and was improved over the past two decades by the cooperation of institutes in Jena, GSI and CERN. [...]
CERN-ACC-2019-230.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-THYYPLS2
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THYYPLS2
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3.
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Optimization of the Cryogenic Current Comparator (CCC) for Beam Intensity Measurement
/ Sieber, Thomas (Darmstadt, GSI) ; De Gersem, Herbert (Darmstadt, Tech. Hochsch.) ; Fernandes, Miguel (CERN ; Liverpool U.) ; Golm, Jessica (Unlisted, DE) ; Jones, Robert (CERN) ; Kowina, Piotr (Darmstadt, GSI) ; Kurian, Febin (Darmstadt, GSI) ; Marsic, Nicolas (Darmstadt, Tech. Hochsch.) ; Neubert, Ralf (Unlisted, DE) ; Reeg, Hansjörg (Darmstadt, GSI) et al.
Triggered by the need for current measurement in the nA range for slow extracted beams and for the beams in the storage rings at FAIR and CERN, the idea of the CCC as a current transformer has been revitalized during the last ten years. Compared to the first prototype, developed at GSI in the 90s, the second generation of CCCs is based on the possibility of detailed simulation of superconducting magnetic shielding properties, new nano-crystalline materials for the magnetic ring-cores, and on superior commercially available SQUID systems. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IBIC2017-TH2AB3
Fulltext: PDF;
In : 6th International Beam Instrumentation Conference, Grand Rapids, MI, USA, 20 -24 Aug 2017, pp.TH2AB3
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4.
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Optimized Cryogenic Current Comparator for CERN's Low-Energy Antiproton Facilities
/ Fernandes, Miguel (CERN ; U. Liverpool (main)) ; Alves, Diogo (CERN) ; Geithner, Rene (U. Jena (main) ; Helmholtz Inst., Jena) ; Koettig, Torsten (CERN) ; Lees, Andrew (CERN) ; Neubert, Ralf (U. Jena (main) ; Helmholtz Inst., Jena) ; Oponowicz, Ewa (CERN) ; Schwickert, Marcus (Darmstadt, GSI) ; Stöhlker, Thomas (U. Jena (main) ; Helmholtz Inst., Jena) ; Tan, Jocelyn (CERN) et al.
Non-perturbative measurement of low-intensity charged particle beams is particularly challenging for beam diagnostics due to the low amplitude of the induced electromagnetic fields. In the low-energy Antiproton Decelerator (AD) and the future Extra Low ENergy Antiproton (ELENA) rings at CERN, an absolute measurement of the beam intensity is essential to monitor operational efficiency and provide important calibration data for all AD experiments. [...]
2017 - 4 p.
- Published in : 10.18429/JACoW-IBIC2016-MOPG48
Fulltext: PDF;
In : International Beam Instrumentation Conference, Barcelona, Spain, 11 - 15 Sep 2016, pp.MOPG48
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5.
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Superconducting beam charge monitors for antiproton storage rings
/ Tympel, Volker (Jena U.) ; Neubert, Ralf (Jena U.) ; Seidel, Paul (Jena U.) ; Geithner, René (Jena U. ; Helmholtz Inst., Jena) ; Golm, Jessica (Jena U. ; Helmholtz Inst., Jena) ; Stöhlker, Thomas (Jena U. ; Helmholtz Inst., Jena ; Darmstadt, GSI) ; Kurian, Febian (Jena U. ; Helmholtz Inst., Jena ; Darmstadt, GSI) ; Sieber, Thomas (Darmstadt, GSI) ; Schwickert, Marcus (Darmstadt, GSI) ; Fernandes, Miguel (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U. ; CERN)
A Cryogenic Current Comparator (CCC) is a new type of instruments for monitoring charged beams like ions or antiprotons. Using superconducting effects is it possible to create a nondestructive, contactless and easy to calibrate beam measurement system with a high current resolution in amplitude and time. [...]
2017 - 6 p.
- Published in : JPS Conf. Proc. 18 (2017) 011042
Fulltext: PDF;
In : 12th International Conference on Low Energy Antiproton Physics, Kanazawa, Japan, 6 - 11 Mar 2016, pp.011042
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6.
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Cryogenic Current Comparator for Storage Rings and Accelerators
/ Geithner, Rene (Helmholtz Inst., Jena ; Jena U.) ; Fernandes, Miguel (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Kurian, Febin (Darmstadt, GSI) ; Neubert, Ralf (Jena U.) ; Reeg, Hansjörg (Darmstadt, GSI) ; Schwickert, Marcus (Darmstadt, GSI) ; Seidel, Paul (Jena U.) ; Sieber, Thomas (Darmstadt, GSI) ; Stöhlker, Thomas (Darmstadt, GSI ; Helmholtz Inst., Jena ; Jena U.)
A Cryogenic Current Comparator (CCC) was developed for a non-destructive, highly sensitive monitoring of nA beams at the planned FAIR accelerator facility at GSI. The sensor part of the CCC was optimized for lowest possible noise-limited current resolution in combination with a high system bandwidth of about 200 kHz. [...]
2016 - 5 p.
- Published in : 10.18429/JACoW-IBIC2015-MOPB013
Fulltext: PDF;
In : International Beam Instrumentation Conference , Melbourne, Australia, 13 - 17 Sep 2015, pp.MOPB013
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7.
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A Cryogenic Current Comparator for the Low-Energy Antiproton Facilities at CERN
/ Fernandes, Miguel (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Geithner, Rene (Jena U. ; Helmholtz Inst., Jena) ; Neubert, Ralf (Jena U.) ; Schwickert, Marcus (Darmstadt, GSI) ; Stöhlker, Thomas (Helmholtz Inst., Jena ; Darmstadt, GSI ; Jena U.) ; Tan, Jocelyn (CERN) ; Welsch, Carsten (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.)
Several laboratories have shown the potential of Cryogenic Current Comparators (CCC) for an absolute measurement of beam intensity down to the nA level. This type of current monitor relies on the use of Superconducting QUantum Interference Device (SQUID) magnetometers and superconductor magnetic shields. [...]
2016 - 5 p.
- Published in : 10.18429/JACoW-IBIC2015-MOPB043
Fulltext: PDF;
In : International Beam Instrumentation Conference , Melbourne, Australia, 13 - 17 Sep 2015, pp.MOPB043
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8.
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A New SQUID-based Measurement Tool for Characterization of Superconducting RF Cavities
/ Knaack, Klaus (DESY, Hamburg) ; Neubert, Ralf (FSU Jena, Jena) ; Nietzsche, Sandor (FSU Jena, Jena) ; Peters, Andreas (GSI, Darmstadt) ; Vodel, Wolfgang (FSU Jena, Jena) ; Wittenburg, Kay (DESY, Hamburg)
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.1070
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