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Design and construction of an enhanced thermal conductivity measurement set-up in the temperature range of 1.8 K to 50 K at CERN
/ Rhandi, M (CERN) ; Bischof, S (CERN) ; Hashinokuti Iwamoto, B (CERN) ; Borges De Sousa, P (CERN) ; Koettig, T (CERN)
Within the goals of the High-Field Magnet (HFM) program at CERN, ongoing research focuses on achieving magnetic flux densities of up to 16 T using superconducting coils. Understanding the thermal properties of composite materials used as impregnation resins or insulation layers in superconducting magnets is crucial for the design of effective cooling methods. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012149
Fulltext: PDF;
In : 29th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012149
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2.
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Cryogenic options for future accelerators: case study for the Muon Collider ring
/ Borges De Sousa, P (CERN) ; Naydenov, B (CERN) ; Delprat, L (CERN) ; Koettig, T (CERN) ; Van Weelderen, R (CERN)
Future, multi-km particle accelerator projects will be under heavy scrutiny to be energetically sustainable. Compared to previous accelerators, these machines must sustain increasingly high beam-induced, static, and dynamic heat loads per meter length. [...]
2025 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng.: 1327 (2025) , no. 1, pp. 012109
Fulltext: PDF;
In : 26th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2024, Geneva, Switzerland, 22 - 26 July 2024, pp.012109
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3.
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Non-magnetic glass-fiber cryostat for MADMAX prototype tests
/ Kreikemeyer-Lorenzo, D. (Garching, Max Planck Inst.) ; Koettig, T. (CERN) ; Borges de Sousa, P. (CERN) ; Gooch, C. (Garching, Max Planck Inst.) ; Kittlinger, D. (Garching, Max Planck Inst.) ; Majorovits, B. (Garching, Max Planck Inst.) ; Maldonado, J.P.A. (Garching, Max Planck Inst.) ; Pralavorio, P. (Marseille, CPPM)
MADMAX, an axion dark matter search experiment, is currently in the prototype testing phase. Its working principle is based on the conversion of axions in a magnetic field into photons. [...]
arXiv:2412.12818.-
2025-02-18 - 8 p.
- Published in : JINST 20 (2025) T02005
Fulltext: 2412.12818 - PDF; document - PDF;
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4.
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5.
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Magnets for a Muon Collider—Needs and Plans
/ Bottura, L (CERN) ; Accettura, C (CERN) ; Amemiya, N (Kyoto U.) ; Auchmann, B (PSI, Villigen) ; Berg, J S (Brookhaven Natl. Lab.) ; Bersani, A (INFN, Genoa) ; Bertarelli, A (CERN) ; Boattini, F (CERN) ; Bordini, B (CERN) ; Borges de Sousa, P (CERN) et al.
We describe the magnet challenges for a Muon Collider, an exciting option considered for the future of particle physics at the energy frontier. Starting from the comprehensive work performed by the US Muon Accelerator Program, we have reviewed the performance specifications dictated by beam physics and the operating conditions to satisfy the accelerator needs. [...]
2024 - 8 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 1-8
Fulltext: PDF;
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6.
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Study on transient heat transfer at metal to dielectric interfaces in the temperature range between 3.5 K and 30 K
/ Koettig, T (CERN) ; Golm, J (CERN) ; Liberadzka, J (CERN) ; Borges de Sousa, P (CERN) ; Bremer, J (CERN)
The thermal conductivity and diffusivity across a combination of metallic and
insulating layers are important thermodynamic input parameters for cooling studies of composite
materials or assemblies built out of layers of different electrical and thermal conductivity. The
dynamic response of such thermal contacts across electrically insulating layers can be expressed
in terms of a diffusivity-like value, which is giving insight on the interface thermal resistance. [...]
2019 - 5 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 502 (2019) 012094
Fulltext: PDF;
In : 27th International Cryogenic Engineering Conference - International Cryogenic Materials Conference 2018, Oxford, United Kingdom, 3 - 7 Sep 2018, pp.012094
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7.
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Conceptual Design of the Cryostat for a Highly Radiation Transparent 2 T Superconducting Detector Solenoid for FCC-ee+
/ Ilardi, Veronica (CERN ; Twente U., Enschede) ; Dudarev, Alexey (CERN) ; Silva, Helder (CERN) ; Koettig, Torsten (CERN) ; Busch, Lennard N (CERN ; KIT, Karlsruhe) ; Borges de Sousa, Patricia (CERN) ; Ten Kate, Herman H. J. (CERN)
The Future Circular Collider electron-positron version (FCC-ee$^{+}$) may be the next step towards a next generation of particle colliders. It may include an Experiment for probing ee$^{+}$ collisions using the IDEA (International Detector for Electron-positron Accelerator), or a similar detector, requiring a solenoid enclosing the inner tracking detector. [...]
2020 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4500405
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8.
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Mechanical Design and Analysis of the Baby-IAXO Magnet Cold Mass, Cryostat and Support System
/ Pais Da Silva, Helder (CERN) ; Bykovskiy, Nikolay (CERN) ; Borges de Sousa, Patricia (CERN) ; Dudarev, Alexey (CERN) ; Ten Kate, Herman H. J. (CERN)
According to the so-called Primakoff effect, axions and axion-like particles can transform into photons in the presence of a strong magnetic field. To continue the search for these hypothetical particles, a new helioscope called the International Axion Observatory IAXO, and its subscale but fully functional demonstrator Baby-IAXO, are being designed. [...]
2020 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4500206
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Study on heat transfer between the High-Luminosity LHC beam screens and the He II-cooled beam tube
/ Borges de Sousa, P (CERN) ; Morrone, M (CERN) ; Garion, C (CERN) ; Van Weelderen, R (CERN) ; Koettig, T (CERN) ; Bremer, J (CERN)
The new beam screens for the inner triplets in the HL-LHC are designed to intercept heat loads of up to 25 Wm$^{-1}$ between 60 K and 80 K. The screens need to be mechanically supported by the beam tube at 1.9 K while limiting heat transfer to the same tube to less than 0.5 W m$^{-1}$. [...]
IOP, 2019 - 6 p.
- Published in : IOP Conf. Ser. Mater. Sci. Eng. 502 (2019) 012088
Fulltext: PDF;
In : 27th International Cryogenic Engineering Conference - International Cryogenic Materials Conference 2018, Oxford, United Kingdom, 3 - 7 Sep 2018, pp.012088
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