A joint Fermilab/SLAC publication

LHC update: July 20, 2009

07/20/09

In the latest issue of the CERN Bulletin, the laboratory reports that vacuum leaks have been found in two "cold" sectors of the Large Hadron Collider. Repairing the leaks will require the affected part of each sector to be warmed to room temperature, but will not affect the vacuum in the beam pipe. The repairs will push the collider's restart date to mid-November.

All planned repairs have been completed to the sector damaged last fall when a connection, or splice, between two superconducting magnets failed. Four of the LHC's eight sectors, and one-third of a fifth sector, have been equipped with new pressure release ports. The ports allow for a greater rate of helium escape from the magnets, thus avoiding the possibility of dangerous pressure build-ups that contributed to September's damage. The remaining sectors will not receive new ports until the next shutdown, so for the upcoming running period will receive an interim fix, with spring release clips replacing their standard release ports.

Latest news articles
07/16/19
Berkeley Lab

Major deliveries in June set the stage for the next phase of work on LUX-ZEPLIN project.

07/13/19
BBC

The Spektr-RG telescope is a joint venture between Russia and Germany that will map X-rays across the entire sky in unprecedented detail.

07/11/19

Satellite galaxies provide new clues about dark matter

A new study shows that light dark matter is 1000 times less likely to bump into regular matter than previous analyses allowed.

07/08/19
Berkeley Lab

Researchers will pick 35 million galaxies and quasars to target during DESI’s 5-year mission.