Start-Ups Seek to Accelerate Path to Nuclear Fusion

<正>In September 2021, the world's most powerful high-temperature superconducting magnet passed its first test, generating a20 T magnetic field during a 5 h trial [1]. The 3 m tall, 9000 kg device(Fig. 1) is the centerpiece of an ambitious plan by the start-up Commonwealth Fusion Systems, headquartered in Cambridge, MA, USA,