15度之上1.9 K华氏3.4度的液氦冷却的强大超导磁体，用于确保质子的运行并且将之加速到更高的速度。
Degrees Fahrenheit, or -273.15 degrees Celsius, keep the protons on course and accelerate them to higher speeds.
液氦也用来冷却红外线探测器，核反应堆，以及核磁共振成像器械的超导磁体等。
Liquid helium cools infrared detectors, nuclear reactors, and the superconducting magnets used in MRI machines, too.
实验利用了一种单层离子势阱，并将其浸在液氦浴中冷却到零下269摄氏度。
The experiments were made possible by a novel, one-layer ion trap cooled to minus 269 C (minus 452 F) with a liquid helium bath.
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