Study of materials and adhesives for superconducting cable feedthroughs

Perin, Antonio; Jareño, R. Macias; Metral, L.

doi:10.1063/1.1472065

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…The conductor will be glued on the inside of the support cylinder with an epoxy resin type adhesive. These can have a shear strength of up to 76.8 MPa at 77 K depending on the type of resin used [42]. Initial mechanical simulations reveal that the IDEA magnet has a peak hoop stress of 105 MPa and for CLD is 75 MPa [39].…”

Section: Fcc-eementioning

confidence: 99%

Superconducting detector magnets for high energy physics

et al. 2023

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Various superconducting detector solenoids for particle physics have been developed in the world. The key technology is the aluminum-stabilized superconductor for almost all the detector magnets in particle physics experiments. The coil fabrication technology is also important and it has advanced along with the conductor technology, such as the inner coil winding technique, indirect cooling, transparent vacuum vessel, quench protection scheme using pure aluminum strips and so on. The detector solenoids design study is in progress for future big projects in Japan and Europe, that is, ILC (International Linear Collider), FCC (Future Circular Collider) and CLIC (Compact LInear Collider), based on the technologies established over many years. The combination of good mechanical properties and keeping a high RRR is a key point for the development of Al-stabilized conductor. The present concern for the detector solenoid development is to have been nearly losing the key technologies and experiences. Nowadays, there are no industrial companies having the capacity to manufacture such aluminum stabilized superconductor. Complementary efforts are seriously required to re-realize and validate the performance required in the future projects in collaboration with worldwide institutes and industries. Some mid-scale physics experiments required detector solenoids wound with not aluminum stabilized conductor but conventional copper stabilized conductor. The specific requirement is to control the magnetic field distribution precisely, and the efforts to realize the requirement are on going with regard to the magnetic field design technology with high precision simulation, coil fabrication technology and so on.

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Section: Fcc-eementioning

confidence: 99%

Superconducting detector magnets for high energy physics

et al. 2023

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“…(2) Eccobond ® epoxy used to fill in holes, chosen for its He II leak-proofness [45] (5) Sapphire substrate making up the bulk of the Cernox ® sensor body. Thickness 203 ±25 µm;…”

Section: Setupmentioning

confidence: 99%

Millisecond Time-Scale Measurements of Heat Transfer to an Open Bath of He II

Ghini¹,

Auchmann²,

Baudouy³

2022

Preprint

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We explore steady state and transient heat transfer from a narrow, rectangular stainless steel heater strip cooled from one side by an open bath of He II. Setup validation is done by fitting the Kapitza heat transfer expression Q = a K (T nK s − T nK b ) to steady state measurements, finding fit parameters within the expected range;We find critical heat flux in line with estimates from literature, and the time between a step in heating and the onset of film boiling follows the expected ∝ Q −4 dependence.During the first millisecond after a step in applied heating power density our measurements show a slower thermal rise time than that found by a time-dependent onedimensional model of our setup using the steady state Kapitza heat transfer expression as the cooling boundary condition. However, the results compare favourably with transient measurements in literature. After the first millisecond, agreement between measurement and model is excellent.We do not find conclusive evidence of an orientation dependence of the Kapitza heat transfer mechanism, nor heat transfer differences that can be attributed to local surface variations along the same heater.

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“…The plug is made of polyetherimide (PEI) [2], the busbar is simulated by a copper bar. The RRR of the copper rod is 70 and it is insulated by layers of 50 µm-thick polyimide (PI) tape for cases 3 & 4.…”

Section: Methodsmentioning

confidence: 99%

Measurement of the thermal properties of prototype lambda plates for the LHC

Marie

Metral

Perin

et al. 2005

Proceedings of the Twentieth International Cryogenic Engineering Conference (ICEC20)

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In order to power the LHC superconducting magnets, thousands of busbars will be routed from electrical feedboxes containing saturated helium at 4.5 K to magnets operating in pressurized superfluid helium at 1.9 K. Between those two volumes, the busbars will pass through special feedthroughs also called lambdaplates. This article presents heat flow measurements performed on several configurations of vertical prototype lambda-plates feedthroughs. The results show that the heat flow is strongly influenced by the configuration of the busbar insulation in the saturated helium. Measurement of the thermal properties of prototype lambda plates for the LHC Marie R., Metral L., Perin A., Rieubland J.-M. CERN Accelerator Technology Division, CH-1211 Geneva 23In order to power the LHC superconducting magnets, thousands of busbars will be routed from electrical feedboxes containing saturated helium at 4.5 K to magnets operating in pressurized superfluid helium at 1.9 K. Between those two volumes, the busbars will pass through special feedthroughs also called lambdaplates. This article presents heat flow measurements performed on several configurations of vertical prototype lambda-plates feedthroughs. The results show that the heat flow is strongly influenced by the configuration of the busbar insulation in the saturated helium.

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Study of materials and adhesives for superconducting cable feedthroughs

Cited by 9 publications

References 2 publications

Superconducting detector magnets for high energy physics

Superconducting detector magnets for high energy physics

Millisecond Time-Scale Measurements of Heat Transfer to an Open Bath of He II

Measurement of the thermal properties of prototype lambda plates for the LHC

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