Design, construction, and operation of an 18 T 70 mm no-insulation (RE)Ba2Cu3O7−<i>x</i> magnet for an axion haloscope experiment

Kim, Jaemin; Kim, Yungil; Yoon, Sanghyun; Shin, Kanghwan; Lee, Jung-Hun; Jung, Jong Seop; Lee, Jung Tae; Kim, Jingeun; Kim, Donglak; Yoo, J.; Lee, Hunju; Moon, Seung‐Hyun; Hahn, Seungyong

doi:10.1063/1.5124432

Cited by 39 publications

(13 citation statements)

References 32 publications

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“…2 shows a photograph of the 18 T HTS solenoid magnet which is designed and built for the axion haloscope experiment. The magnet consists of a stack of 44 double-pancake-coils (DPC) made of GdBa 2 Cu 3 O 7−x (GdBCO) tapes [43]. The peak hoop stress is estimated to be 282 MPa.…”

Section: T Axion Haloscopementioning

confidence: 99%

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Axion Haloscope Using an 18 T High Temperature Superconducting Magnet

Yoon¹,

Ahn²,

Yang³

et al. 2022

Preprint

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We report details on the axion dark matter search experiment that uses the innovative technologies of a High-Temperature Superconducting (HTS) magnet and a Josephson Parametric Converter (JPC). An 18 T HTS solenoid magnet is developed for this experiment. The JPC is used as the first stage amplifier to achieve a near quantum-limited low-noise condition. The first dark matter axion search was performed with the 18 T axion haloscope [1]. The scan frequency range is from 4.7789 GHz to 4.8094 GHz (30.5 MHz range). No significant signal consistent with Galactic dark matter axion is observed. Our results set the best limit of the axion-photon-photon coupling (gaγγ) in the axion mass range of 19.764 to 19.890 µeV. Using the Bayesian method, the upper bounds of gaγγ are set at 0.98×|g KSVZ aγγ | (1.11×|g KSVZ aγγ |) in the mass ranges of 19.764 to 19.771 µeV (19.863 to 19.890 µeV), and at 1.76 ×|g KSVZ aγγ | in the mass ranges of 19.772 to 19.863 µeV with 90% confidence level, respectively. We report design, construction, operation, and data analysis of the 18 T axion haloscope experiment.

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Section: T Axion Haloscopementioning

confidence: 99%

“…The key specifications of the magnet are summarized in Table I, and engineering details can be found in Ref. [43].…”

Section: T Axion Haloscopementioning

confidence: 99%

Axion Haloscope Using an 18 T High Temperature Superconducting Magnet

Yoon¹,

Ahn²,

Yang³

et al. 2022

Preprint

Self Cite

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“…These efforts include employing a much stronger magnet, further advancing the multiple-cell cavity approach, and developing a superconducting cavity and quantum-limited amplifiers [251]. For the stronger magnet, they have been testing a new 12 T low-temperature superconducting (LTS) magnet with a bore size of 32 cm and an 18 T hightemperature superconducting (HTS) magnet with a bore size of 7 cm [252]. Although their 18 T magnet is the strongest magnet ever adopted for axion haloscopes, its relatively small bore limits the size of the cavity.…”

Section: Axion Searches With Microwave Cavitiesmentioning

confidence: 99%

Superconducting detectors for rare event searches in experimental astroparticle physics

Kim,

Lee,

Yang

2021

Preprint

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Superconducting detectors have become an important tool in experimental astroparticle physics, which seeks to provide a fundamental understanding of the Universe. In particular, such detectors have demonstrated excellent potential in two challenging research areas involving rare event search experiments, namely, the direct detection of dark matter and the search for neutrinoless double beta decay. Here, we review the superconducting detectors that have been and are planned to be used in these two categories of experiments. We first provide brief histories of the two research areas and outline their significance and challenges in astroparticle physics. Then, we present an extensive overview of various types of superconducting detectors with a focus on sensor technologies and detector physics, which are based on calorimetric measurements and heat flow in the detector components. Finally, we introduce leading experiments and discuss their future prospects for the detection of dark matter and the search for neutrinoless double beta decay employing superconducting detectors.

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“…Magnets capable of generating 20-30 T and operating in background fields of similar strength will be required for pure and applied research in several disciplines, including particle physics [1], electron microscopy [2] and magnetic confinement fusion. For context, the ITER tokamak, intended to be the first reactor to achieve net energy generation through controlled fusion, will generate 5.3 T toroidal fields on plasma major radius, but will experience peak axial fields of 12.8-13.5 T on its central solenoid with operating currents up to 46 kA [3].…”

Section: Introductionmentioning

confidence: 99%

A cryostat for a 6 T conduction-cooled, no-insulation multi-pancake HTS solenoid

Barkas

Zhai

Safabakhsh

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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There is a growing requirement for high-field (>20 T) magnets capable of continuous operation, driven by the needs of both fundamental research and technological advance, particularly in application to an eventual pilot plant for magnetic confinement fusion. Even with HTS windings, such magnets will still require cryogenic cooling, and liquid helium (LHe) immersion, the typical solution to this problem, adds significantly to the operating expenses of such facilities. This reality makes cryogen-free cooling systems a necessity in future high-field magnet systems. The Princeton Plasma Physics Laboratory (PPPL) is exploring conduction-cooling systems of HTS pancake solenoids for a scanning tunneling microscopy (STM) facility at Princeton University, and potentially also for the central solenoid of the Fusion Nuclear Science Facility (FNSF). To these ends, PPPL is designing a cryostat to evaluate the thermal stability of a 5-6 T, 30 double-pancake (DP) REBCO insert coil of 40 mm ID / 70 mm OD, and smaller prototypes, operated in self-field with conduction cooling provided by a 2-stage GM cryocooler. The current design is expected to achieve 1st and 2nd stage temperatures of 44 K and 4-10 K, respectively, with the resistivity of DP-DP solder joints being the principal source of uncertainty in 2nd stage temperature predictions.

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Design, construction, and operation of an 18 T 70 mm no-insulation (RE)Ba2Cu3O7−x magnet for an axion haloscope experiment

Cited by 39 publications

References 32 publications

Axion Haloscope Using an 18 T High Temperature Superconducting Magnet

Axion Haloscope Using an 18 T High Temperature Superconducting Magnet

Superconducting detectors for rare event searches in experimental astroparticle physics

A cryostat for a 6 T conduction-cooled, no-insulation multi-pancake HTS solenoid

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