Header Ads Widget

Ticker

6/recent/ticker-posts

LHC - Coldest Place In The Universe?

This news report covers the recent high energy physics meeting in France. One of the most important outcome of the meeting was the urge to build the ILC as the next generation particle collider to refine the results obtained at the LHC.

That is all fine and dandy. However, my eyes widened when I read this paragraph:

In March, the Large Hadron Collider produced a tiny bang, the most potent force on the tiny atomic level that humans have ever created.

Two beams of protons were sent hurtling in opposite directions toward each other in a 17-mile (27-kilometer) tunnel below the Swiss-French border — the coldest place in the universe at slightly above absolute zero.


Two problems with this last part:

1. LHC uses superconducting magnets to steer and control the proton beams. The beams do not collide under cryogenic temperatures. As far as I know, none of the detectors (ATLAS, CMS, etc.) are "superconducting".

2. While the magnets are cooled using liquid Helium, I can't imagine them being any lower than 1K. This is not "cold" at all, considering that we can get to milli Kelvin temperatures in many experiments already. So even on earth, the LHC is not the coldest place. I would guess that the rest of the Universe will have quite a say in that claim.

I suppose this is another example of a bit of bad reporting.

Zz.

Post a Comment

0 Comments