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1.
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Cryogenic Current Comparators as Low Intensity Diagnostics for Ion Beams
/ Sieber, Thomas (Darmstadt, GSI) ; Crescimbeni, Lorenzo (U. Jena (main) ; Darmstadt, GSI) ; Haider, David (Darmstadt, GSI) ; Marsic, Nicolas (Denmark, Tech. U.) ; Schmelz, Matthias ; Schmidl, Frank (U. Jena (main)) ; Schwickert, Marcus ; Stöhlker, Thomas (Helmholtz Inst., Jena ; Darmstadt, GSI) ; Stolz, Ronny (Ilmenau Tech. U.) ; Tan, Jocelyn (CERN) et al.
The Cryogenic Current Comparator (CCC) is a SQUID based superconducting device for intensity measurement, firstly proposed as a beam diagnostics instrument in the 90s at GSI. After prove of principle the CCC was introduced into other facilities, attesting great potential for high resolution measurements but at the same time considerable mechanical and cryogenics challenges and costs. [...]
2023 - 5 p.
- Published in : JACoW IBIC 2023 (2023) TUP036
Fulltext: PDF;
In : 12th International Beam Instrumentation Conference (IBIC 2023), Saskatoon, Canada, 10 - 14 Sep 2023, pp.TUP036
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2.
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First Measurements of a New Type of Coreless Cryogenic Current Comparators (4C) for Non-Destructive Intensity Diagnostics of Charged Particles
/ Tympel, Volker (Helmholtz Inst., Jena) ; Anders, Solveig (Inst. Photonic Tech., Jena) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Golm, Jessica (Jena U.) ; Haider, David (Darmstadt, GSI) ; Kunert, Juergen (Inst. Photonic Tech., Jena) ; Marsic, Nicolas (Darmstadt, Tech. U.) ; Müller, Wolfgang (Darmstadt, Tech. U.) ; Schmelz, Matthias (Inst. Photonic Tech., Jena) ; Schmidl, Frank (Darmstadt, GSI) et al.
The non-destructive and highly sensitive measurement of a charged particle beam is of utmost importance for modern particle accelerator facilities. A Cryogenic Current Comparator (CCC) can be used to measure beam currents in the nA-range. [...]
2019 - 3 p.
- Published in : 10.18429/JACoW-IBIC2019-MOPP008
Fulltext: PDF;
In : 8th International Beam Instrumentation Conference (IBIC 2019), Malmo, Sweden, 8 - 12 Sep 2019, pp.MOPP008
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3.
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Versatile Beamline Cryostat for the Cryogenic Current Comparator (CCC) for FAIR
/ Haider, David (Darmstadt, GSI) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Golm, Jessica (Jena U. ; CERN) ; Koettig, Torsten (CERN) ; Kurian, Febin (Darmstadt, GSI) ; Marsic, Nicolas (Darmstadt, Tech. U.) ; Müller, Wolfgang (Darmstadt, Tech. U.) ; Schmelz, Matthias ; Schwickert, Marcus (Darmstadt, GSI) ; Sieber, Thomas (Darmstadt, GSI) et al.
The Cryogenic Current Comparator (CCC) extends the measurement range of traditional non-destructive current monitors used in accelerator beamlines down to a few nano-amperes of direct beam current. This is achieved by a cryogenic environment of liquid helium around the beamline, in which the beam’s magnetic field is measured with a Superconducting Quantum Interference Device (SQUID), which is itself enclosed in a superconducting shielding structure. [...]
2019 - 4 p.
- Published in : 10.18429/JACoW-IBIC2019-MOPP007
Fulltext: PDF;
In : 8th International Beam Instrumentation Conference (IBIC 2019), Malmo, Sweden, 8 - 12 Sep 2019, pp.MOPP007
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4.
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Beam Intensity Monitoring with nA Resolution - the Cryogenic Current Comparator (CCC)
/ Haider, David (Darmstadt, GSI) ; De Gersem, Herbert (Darmstadt, Tech. Hochsch.) ; Fernandes, Miguel (CERN) ; Forck, Peter (Darmstadt, GSI) ; Golm, Jessica (Unlisted, DE) ; Kurian, Febin (Darmstadt, GSI) ; Marsic, Nicolas (Darmstadt, Tech. Hochsch.) ; Schmelz, Matthias (Inst. Photonic Tech., Jena) ; Schmidl, Frank (Unlisted, DE) ; Schwickert, Marcus (Darmstadt, GSI) et al.
The storage of low current beams as well as the long extraction times from the synchrotrons at FAIR require non-destructive beam intensity monitoring with a current resolution of nanoampere. To fulfill this requirement, the concept of the Cryogenic Current Comparator (CCC), based on the low temperature SQUID, is used to obtain an extremely sensitive beam current transformer. [...]
JACoW, 2019 - 4 p.
- Published in : 10.18429/JACoW-IBIC2018-MOPC08
Published fulltext: PDF;
In : 7th International Beam Instrumentation Conference, Shanghai, China, 9 - 13 Sep, 2018, pp.MOPC08
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5.
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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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6.
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Next generation Cryogenic Current Comparator (CCC) for nA intensity measurement
/ Sieber, Thomas (Darmstadt, GSI) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Golm, Jessica (U. Jena (main)) ; Haider, David (Darmstadt, GSI) ; Marsic, Nicolas (Darmstadt, Tech. U.) ; Müller, Wolfgang (Darmstadt, Tech. U.) ; Reeg, Hansjörg (Darmstadt, GSI) ; Schmelz, Matthias (Inst. Photonic Tech., Jena) ; Schmidl, Frank (U. Jena (main)) ; Schwickert, Marcus (Darmstadt, GSI) et al.
A Cryogenic Current Comparator (CCC) is an extremely sensitive DC-Beam Transformer based on superconducting SQUID technology. Recently, a CCC without a toroidal core and with an axially oriented magnetic shielding has been developed at the Institute of Photonic Technologies (IPHT) Jena/Germany. [...]
CERN-ACC-2019-193.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPGW020
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPGW020
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7.
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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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8.
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Operation of a Cryogenic Current Comparator with Nanoampere Resolution for Continuous Beam Intensity Measurements in the Antiproton Decelerator at CERN
/ Fernandes, Miguel (CERN ; U. Liverpool (main)) ; Alves, Diogo (CERN) ; Koettig, Torsten (CERN) ; Lees, Andrew (CERN) ; Schwickert, Marcus (Darmstadt, GSI) ; Stöhlker, Thomas (Darmstadt, GSI ; U. Jena (main)) ; Tan, Jocelyn (CERN) ; Welsch, Carsten (U. Liverpool (main))
Low-intensity charged particle beams are particularly challenging for non-perturbative beam diagnostics due to the small amplitude of induced electromagnetic fields. The Antiproton Decelerator (AD) and Extra Low ENergy Antiproton (ELENA) rings at CERN decelerate beams containing 10⁷ antiprotons. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPML044
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPML044
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9.
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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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10.
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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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