|
1.
|
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
|
|
|
2.
|
A new benchmark of soft X-ray transition energies of $\mathrm {Ne}$, $\mathrm {CO}_2$, and $\mathrm {SF}_6$: paving a pathway towards ppm accuracy
/ Stierhof, J. (Erlangen - Nuremberg U.) ; Kühn, S. (Heidelberg, Max Planck Inst.) ; Winter, M. (Erlangen - Nuremberg U. ; Neel Lab, Grenoble) ; Micke, P. (CERN) ; Steinbrügge, R. (DESY) ; Shah, C. (NASA, Goddard ; Heidelberg, Max Planck Inst. ; LLNL, Livermore) ; Hell, N. (LLNL, Livermore) ; Bissinger, M. (Erlangen - Nuremberg U.) ; Hirsch, M. (Erlangen - Nuremberg U.) ; Ballhausen, R. (Erlangen - Nuremberg U.) et al.
A key requirement for the correct interpretation of high-resolution X-ray spectra is that transition energies are known with high accuracy and precision. We investigate the K-shell features of Ne, CO$_2$, and SF$_6$ gases, by measuring their photo ion-yield spectra at the BESSY II synchrotron facility simultaneously with the 1s-np fluorescence emission of He-like ions produced in the Polar-X EBIT. [...]
arXiv:2203.03725.-
2022-03-01 - 13 p.
- Published in : Eur. Phys. J. D
Fulltext: 2203.03725 - PDF; Corrigendum - PDF; Publication - PDF; Erratum - PDF;
|
|
|
3.
|
Charge state tailoring of relativistic heavy ion beams for the Gamma Factory project at CERN
/ Kröger, F M (U. Jena (main) ; Helmholtz Inst., Jena) ; Weber, G (Helmholtz Inst., Jena ; Darmstadt, GSI) ; Shevelko, V P (LPI, Moscow (main)) ; Hirlaender, S (CERN) ; Krasny, M W (CERN ; Paris U., VI-VII) ; Stöhlker, Th (U. Jena (main) ; Helmholtz Inst., Jena ; Darmstadt, GSI)
We present charge‐state evolution studies for Pb$^{54+}$ ion beams passing through stripper foils at relativistic energies of 5.9 GeV/u. The purpose of this investigation is to determine the optimum target material and non‐equilibrium thickness for the efficient production of few‐electron lead ions, that is, Pb$^{80+}$ and Pb$^{81+}$, at the present European Organization for Nuclear Research, CERN, accelerator facility at energies as high as 5.9 GeV/u. [...]
2019 - 4 p.
- Published in : X-ray Spectrom. 49 (2019) 25-28
In : 19th International Conference on Physics of Highly Charged Ions (HCI 2018), Lisbon, Portugal, 3 - 7 Sep 2018, pp.25-28
|
|
|
4.
|
A 410 MHz resonant cavity pickup for heavy ion storage rings
/ Sanjari, M S (Darmstadt, GSI) ; Dmytriiev, D (Darmstadt, GSI ; U. Heidelberg (main)) ; Litvinov, Yu A (Darmstadt, GSI ; U. Heidelberg (main)) ; Gumenyuk, O (CERN ; Darmstadt, GSI) ; Hess, R (Darmstadt, GSI) ; Joseph, R (Darmstadt, GSI) ; Litvinov, S A (Darmstadt, GSI) ; Steck, M (Darmstadt, GSI) ; Stöhlker, Th (Darmstadt, GSI)
An improved design of a longitudinally sensitive resonant Schottky cavity pickup for the heavy ion storage rings of the Facility for Antiproton and Ion Research in Europe (FAIR) project is reported. The new detector has a higher measured Q value of ∼3000 and a higher simulated shunt impedance of 473.3 kΩ. [...]
2020 - 10 p.
- Published in : Rev. Sci. Instrum. 91 (2020) 083303
Fulltext: PDF;
|
|
|
5.
|
Charge-state distributions of highly charged lead ions at relativistic collision energies
/ Kröger, Felix M. (Jena U. ; Helmholtz Inst., Jena ; Darmstadt, GSI) ; Weber, Günter (Helmholtz Inst., Jena ; Darmstadt, GSI) ; Hirlaender, Simon (U. Salzburg (main)) ; Alemany‐Fernandez, Reyes (CERN) ; Krasny, Mieczyslaw W. (CERN ; Paris U., VI-VII) ; Stöhlker, Th. (Jena U. ; Helmholtz Inst., Jena ; Darmstadt, GSI) ; Tolstikhina, Inga Yu. (LPI, Moscow (main)) ; Shevelko, Viacheslav P. (LPI, Moscow (main))
Presented is a study of the charge-state evolution of relativistic lead ions passing through a thin aluminum stripper foil. It was motivated by the Gamma Factory project at CERN, where optical laser pulses will be converted into intense gamma-ray beams with energies up to a few hundred MeV via excitation of atomic transitions in few-electron heavy-ions at highly relativistic velocities. [...]
arXiv:2105.13643; CERN-PBC-Notes-2021-015.-
2021-09-29 - 8 p.
- Published in : Ann. Phys. 534 (2021) 2100245
Fulltext: 2105.13643 - PDF; Publication - PDF;
|
|
|
6.
|
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
|
|
|
7.
|
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
|
|
|
8.
|
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
|
|
|
9.
|
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
|
|
|
10.
|
Between atomic and nuclear physics: radioactive decays of highly-charged ions
/ Atanasov, Dinko (Darmstadt, GSI ; Heidelberg, Max Planck Inst.) ; Blaum, Klaus (Heidelberg, Max Planck Inst. ; Heidelberg U.) ; Bosch, Fritz (Darmstadt, GSI) ; Brandau, Carsten (Darmstadt, GSI ; U. Giessen (main)) ; Bühler, Paul (Stefan Meyer Inst. Subatomare Phys.) ; Chen, Xiangcheng (Darmstadt, GSI ; Lanzhou, Inst. Modern Phys.) ; Dillmann, Iris (Darmstadt, GSI ; U. Giessen (main) ; TRIUMF) ; Faestermann, Thomas (Munich, Tech. U.) ; Gao, Bingshui (Darmstadt, GSI ; Heidelberg, Max Planck Inst. ; Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Geissel, Hans (Darmstadt, GSI ; U. Giessen (main)) et al.
/FRS-ESR ; ILIMA ; SPARC ; TBWD,
Highly charged radioactive ions can be stored for extended periods of time in storage rings which allows for precision measurements of their decay modes. The straightforward motivation for performing such studies is that fully ionised nuclei or few-electron ions can be viewed as clean quantum-mechanical systems, in which the interactions of the many electrons can be either excluded or treated precisely. [...]
IOP, 2015 - 17 p.
- Published in : J. Phys. B 48 (2015) 144024
|
|
電郵警報
或訂閱
RSS feed.