SPIE Digital Library Get updates from SPIE Newsroom
  • Newsroom Home
  • Astronomy
  • Biomedical Optics & Medical Imaging
  • Defense & Security
  • Electronic Imaging & Signal Processing
  • Illumination & Displays
  • Lasers & Sources
  • Micro/Nano Lithography
  • Nanotechnology
  • Optical Design & Engineering
  • Optoelectronics & Communications
  • Remote Sensing
  • Sensing & Measurement
  • Solar & Alternative Energy
  • Sign up for Newsroom E-Alerts
SPIE Defense + Commercial Sensing 2017 | Register Today

OPIE 2017

OPIC 2017

SPIE Journals OPEN ACCESS

SPIE PRESS

SPIE PRESS




Print PageEmail Page

Lasers & Sources

Hadron startup delayed until next year

The world's newest and largest particle accelerator, the Large Hadron Collider, will not begin operations again until April, officials at the European Center for Nuclear Research said last week. Two weeks ago, the center for nuclear research, which is outside Geneva, sent the first beams of protons around the machine's 17-mile-long underground racetrack.

But last Friday the machine was shut down after an electrical connection between two of the superconducting electromagnets that steer the protons suffered a so-called quench, heating up, melting and leaking helium into the collider tunnel. Liquid helium is used to cool the magnets to superconducting temperatures of only about 3.5 degrees Fahrenheit above absolute zero. Stray heat can cause the magnets to lose their superconductivity with potentially disastrous consequences.

Full story from New York Times