Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires
Superconducting magnets are an invaluable tool for scientific discovery, energy research, and medical diagnosis. To date, virtually all superconducting magnets have been made from two Nb-based low-temperature superconductors (Nb-Ti with a superconducting transition temperature <i>T</i>&l...
Main Authors: | , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-06-01
|
Series: | Instruments |
Subjects: | |
Online Access: | https://www.mdpi.com/2410-390X/4/2/17 |
id |
doaj-828ec1edee2949c38707f9fd07ed6424 |
---|---|
record_format |
Article |
spelling |
doaj-828ec1edee2949c38707f9fd07ed64242020-11-25T03:14:19ZengMDPI AGInstruments2410-390X2020-06-014171710.3390/instruments4020017Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round WiresTengming Shen0Laura Garcia Fajardo1Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USALawrence Berkeley National Laboratory, Berkeley, CA 94720, USASuperconducting magnets are an invaluable tool for scientific discovery, energy research, and medical diagnosis. To date, virtually all superconducting magnets have been made from two Nb-based low-temperature superconductors (Nb-Ti with a superconducting transition temperature <i>T</i><sub>c</sub> of 9.2 K and Nb<sub>3</sub>Sn with a <i>T</i><sub>c</sub> of 18.3 K). The 8.33 T Nb-Ti accelerator dipole magnets of the large hadron collider (LHC) at CERN enabled the discovery of the Higgs Boson and the ongoing search for physics beyond the standard model of high energy physics. The 12 T class Nb<sub>3</sub>Sn magnets are key to the International Thermonuclear Experimental Reactor (ITER) Tokamak and to the high-luminosity upgrade of the LHC that aims to increase the luminosity by a factor of 5–10. In this paper, we discuss opportunities with a high-temperature superconducting material Bi-2212 with a <i>T</i><sub>c</sub> of 80–92 K for building more powerful magnets for high energy circular colliders. The development of a superconducting accelerator magnet could not succeed without a parallel development of a high performance conductor. We will review triumphs of developing Bi-2212 round wires into a magnet grade conductor and technologies that enable them. Then, we will discuss the challenges associated with constructing a high-field accelerator magnet using Bi-2212 wires, especially those dipoles of 15–20 T class with a significant value for future physics colliders, potential technology paths forward, and progress made so far with subscale magnet development based on racetrack coils and a canted-cosine-theta magnet design that uniquely addresses the mechanical weaknesses of Bi-2212 cables. Additionally, a roadmap being implemented by the US Magnet Development Program for demonstrating high-field Bi-2212 accelerator dipole technologies is presented.https://www.mdpi.com/2410-390X/4/2/17high-temperature superconducting magnetsHTSBi-2212accelerator magnets |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tengming Shen Laura Garcia Fajardo |
spellingShingle |
Tengming Shen Laura Garcia Fajardo Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires Instruments high-temperature superconducting magnets HTS Bi-2212 accelerator magnets |
author_facet |
Tengming Shen Laura Garcia Fajardo |
author_sort |
Tengming Shen |
title |
Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires |
title_short |
Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires |
title_full |
Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires |
title_fullStr |
Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires |
title_full_unstemmed |
Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires |
title_sort |
superconducting accelerator magnets based on high-temperature superconducting bi-2212 round wires |
publisher |
MDPI AG |
series |
Instruments |
issn |
2410-390X |
publishDate |
2020-06-01 |
description |
Superconducting magnets are an invaluable tool for scientific discovery, energy research, and medical diagnosis. To date, virtually all superconducting magnets have been made from two Nb-based low-temperature superconductors (Nb-Ti with a superconducting transition temperature <i>T</i><sub>c</sub> of 9.2 K and Nb<sub>3</sub>Sn with a <i>T</i><sub>c</sub> of 18.3 K). The 8.33 T Nb-Ti accelerator dipole magnets of the large hadron collider (LHC) at CERN enabled the discovery of the Higgs Boson and the ongoing search for physics beyond the standard model of high energy physics. The 12 T class Nb<sub>3</sub>Sn magnets are key to the International Thermonuclear Experimental Reactor (ITER) Tokamak and to the high-luminosity upgrade of the LHC that aims to increase the luminosity by a factor of 5–10. In this paper, we discuss opportunities with a high-temperature superconducting material Bi-2212 with a <i>T</i><sub>c</sub> of 80–92 K for building more powerful magnets for high energy circular colliders. The development of a superconducting accelerator magnet could not succeed without a parallel development of a high performance conductor. We will review triumphs of developing Bi-2212 round wires into a magnet grade conductor and technologies that enable them. Then, we will discuss the challenges associated with constructing a high-field accelerator magnet using Bi-2212 wires, especially those dipoles of 15–20 T class with a significant value for future physics colliders, potential technology paths forward, and progress made so far with subscale magnet development based on racetrack coils and a canted-cosine-theta magnet design that uniquely addresses the mechanical weaknesses of Bi-2212 cables. Additionally, a roadmap being implemented by the US Magnet Development Program for demonstrating high-field Bi-2212 accelerator dipole technologies is presented. |
topic |
high-temperature superconducting magnets HTS Bi-2212 accelerator magnets |
url |
https://www.mdpi.com/2410-390X/4/2/17 |
work_keys_str_mv |
AT tengmingshen superconductingacceleratormagnetsbasedonhightemperaturesuperconductingbi2212roundwires AT lauragarciafajardo superconductingacceleratormagnetsbasedonhightemperaturesuperconductingbi2212roundwires |
_version_ |
1724643158593110016 |