Optimized and practical electrical joints for CORC type HTS cables

Tim  Mulder; A.V. Dudarev; D.C. van der Laan; M.G.T. Mentink; Marc M.J. Dhalle; Herman H.J. ten Kate

doi:10.1088/1757-899X/102/1/012026

Optimized and practical electrical joints for CORC type HTS cables

Tim Mulder, A.V. Dudarev, D.C. van der Laan, M.G.T. Mentink, Marc M.J. Dhalle, Herman H.J. ten Kate

Energy Materials Systems

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Abstract

Within CERN the development of REBCO-CORC (Conductor On Round Core) type
cables is pursued in view of possible application in future detector and accelerator magnets. An important issue is the design and qualification of terminations for connecting CORC cables mutually or to bus-bars. A termination design is envisaged that combines a simple manufacturing process with a lowest possible joint terminal resistance in the few nΩ range at 4.2 K, first for a single CORC cable and subsequently for CORC based Cable-in-Conduit Conductors. The investigation concerns the effect of tapering the CORC cable within the joint to form a staircase like geometry, which allows current to pass more directly from the copper joint casing to the inner REBCO layers of the CORC cable. Simulations have shown a substantial decrease in joint resistance at operating current in the case both CORC cable and joint casing are tapered. The CORC cable and new joint were tested at CERN. In this paper, some details of the new joint design, fabrication process, and model are presented and the results are summarized.

Original language	English
Article number	012026
Number of pages	8
Journal	IOP Conference Series: Materials Science and Engineering
Volume	102
Issue number	1
DOIs	https://doi.org/10.1088/1757-899X/102/1/012026
Publication status	Published - 2015

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Optimized_and_practical_electrical_joints_for_CORCFinal published version, 1.24 MBLicence: CC BY

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title = "Optimized and practical electrical joints for CORC type HTS cables",

abstract = " Within CERN the development of REBCO-CORC (Conductor On Round Core) typecables is pursued in view of possible application in future detector and accelerator magnets. An important issue is the design and qualification of terminations for connecting CORC cables mutually or to bus-bars. A termination design is envisaged that combines a simple manufacturing process with a lowest possible joint terminal resistance in the few nΩ range at 4.2 K, first for a single CORC cable and subsequently for CORC based Cable-in-Conduit Conductors. The investigation concerns the effect of tapering the CORC cable within the joint to form a staircase like geometry, which allows current to pass more directly from the copper joint casing to the inner REBCO layers of the CORC cable. Simulations have shown a substantial decrease in joint resistance at operating current in the case both CORC cable and joint casing are tapered. The CORC cable and new joint were tested at CERN. In this paper, some details of the new joint design, fabrication process, and model are presented and the results are summarized. ",

author = "Tim Mulder and A.V. Dudarev and {van der Laan}, D.C. and M.G.T. Mentink and Dhalle, {Marc M.J.} and {ten Kate}, {Herman H.J.}",

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language = "English",

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T1 - Optimized and practical electrical joints for CORC type HTS cables

AU - Mulder, Tim

AU - Dudarev, A.V.

AU - van der Laan, D.C.

AU - Mentink, M.G.T.

AU - Dhalle, Marc M.J.

AU - ten Kate, Herman H.J.

PY - 2015

Y1 - 2015

N2 - Within CERN the development of REBCO-CORC (Conductor On Round Core) typecables is pursued in view of possible application in future detector and accelerator magnets. An important issue is the design and qualification of terminations for connecting CORC cables mutually or to bus-bars. A termination design is envisaged that combines a simple manufacturing process with a lowest possible joint terminal resistance in the few nΩ range at 4.2 K, first for a single CORC cable and subsequently for CORC based Cable-in-Conduit Conductors. The investigation concerns the effect of tapering the CORC cable within the joint to form a staircase like geometry, which allows current to pass more directly from the copper joint casing to the inner REBCO layers of the CORC cable. Simulations have shown a substantial decrease in joint resistance at operating current in the case both CORC cable and joint casing are tapered. The CORC cable and new joint were tested at CERN. In this paper, some details of the new joint design, fabrication process, and model are presented and the results are summarized.

AB - Within CERN the development of REBCO-CORC (Conductor On Round Core) typecables is pursued in view of possible application in future detector and accelerator magnets. An important issue is the design and qualification of terminations for connecting CORC cables mutually or to bus-bars. A termination design is envisaged that combines a simple manufacturing process with a lowest possible joint terminal resistance in the few nΩ range at 4.2 K, first for a single CORC cable and subsequently for CORC based Cable-in-Conduit Conductors. The investigation concerns the effect of tapering the CORC cable within the joint to form a staircase like geometry, which allows current to pass more directly from the copper joint casing to the inner REBCO layers of the CORC cable. Simulations have shown a substantial decrease in joint resistance at operating current in the case both CORC cable and joint casing are tapered. The CORC cable and new joint were tested at CERN. In this paper, some details of the new joint design, fabrication process, and model are presented and the results are summarized.

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DO - 10.1088/1757-899X/102/1/012026

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VL - 102

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

SN - 1757-8981

IS - 1

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ER -

Optimized and practical electrical joints for CORC type HTS cables

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