Search found 161 matches

by Tau
Sat May 30, 2015 2:00 pm
Forum: The Accelerator
Topic: MUFO?
Replies: 20
Views: 5533

Re: MUFO?

The MUFO stands for "Mega Unknown Falling Object", which is probably some dust falling down the tube, that gets hit by the high energy photons resulting in a spray of particles that set off the detectors. The ULO is something lying in the tube, which might be a heap of dust of a few mm high. The big...
by Tau
Fri May 29, 2015 9:28 am
Forum: The Accelerator
Topic: 2014 machine commissioning and 2015 start up
Replies: 59
Views: 62072

Re: 2014 machine commissioning and 2015 start up

And yesterday we had collisions with a beta of 80 cm. The beta is a measurement for the focus of the beam. If they say "we are at 80 cm", they mean "the beta is 80 cm at the collision points". The lower it is, the more focusued the beams are. Previous run the lowest possible value was 80 cm, but sin...
by Tau
Fri May 29, 2015 4:19 am
Forum: New Users Start Here
Topic: New Guy
Replies: 2
Views: 1134

Re: New Guy

Welcome to this little corner of the internet!
by Tau
Thu May 21, 2015 7:32 am
Forum: The Accelerator
Topic: The first 13 TeV collisions are a fact
Replies: 2
Views: 1456

The first 13 TeV collisions are a fact

As I type this, it is happening! The first 13 TeV collisions are happening right now, in ATLAS and CMS. Edited: now in all four IPs. Now the experiments have some test data to adjust their machines. But there is still plenty to do before the real production run: Beams are not yet stable The movable ...
by Tau
Wed May 20, 2015 12:32 pm
Forum: The Accelerator
Topic: MUFO?
Replies: 20
Views: 5533

Re: MUFO?

The presentation is there, but it is not very conclusive...
by Tau
Sun May 17, 2015 10:06 am
Forum: New Users Start Here
Topic: Hi
Replies: 4
Views: 1350

Re: Hi

I found my old password! I am the real Tau again! No more Tau 2 from now on...
:dance:
by Tau
Tue Apr 03, 2012 12:42 pm
Forum: New Users Start Here
Topic: Link found: lots of info about LHC
Replies: 1
Views: 2138

Link found: lots of info about LHC

Hi folks,
I stumbled on a great website that tell everything about the LHC you want to know (and more, unless you are as crazy as I am!):
http://www.lhc-closer.es/

Take a look.
I think we must thank the author(s) for collecting all this stuff nicely together!
by Tau
Sat Sep 17, 2011 2:25 pm
Forum: New Users Start Here
Topic: Fascinating Facts about the LHC
Replies: 13
Views: 13303

Re: Fascinating Facts about the LHC

My personal favorite facts: The tube is 26659.883 m long. But, this differs about 1 mm with the phase of the moon. And that is enough to compensate for, as stated before. The driver frequency of the RF is 400.789 MHz. When ramping from injection energy to the 3.5 TeV, this has to be increased by onl...
by Tau
Mon May 23, 2011 7:42 pm
Forum: The Accelerator
Topic: Possible LHC convention!!!!
Replies: 15
Views: 9163

Re: Possible LHC convention!!!!

How about a an internet convention? That way, the many people who can't afford (timewise, moneywise or otherwise) to go can join in. I was thinking of one or more IRC sessions/video chats with interesting people. And indeed, we already knowt the LHC is important, otherwise we wouldn't be here... But...
by Tau
Fri Jan 07, 2011 10:00 am
Forum: End Of The World
Topic: Mini Black Holes
Replies: 30
Views: 9154

Re: Mini Black Holes

LarryS wrote:Tau,

Nice to see that you are back posting; however, I must warn you that Scientific Facts will only confuse "them."
Agreed.
However, I *still* am allergic to nonsense, and sometimes I fail to hide it. :-)
by Tau
Tue Jan 04, 2011 2:24 pm
Forum: End Of The World
Topic: Mini Black Holes
Replies: 30
Views: 9154

Re: Mini Black Holes

At the moment there no direct explanation of «Earth black holes» in Guatemala, China, Ukraine, Russia et al. Oh yes there is: http://www.inspectapedia.com/vision/sinkholes.htm http://www.portal.state.pa.us/portal/server.pt/community/sinkholes/10637/what_causes_a_sinkhole_/554362 http://www.travelpo...
by Tau
Tue Jan 04, 2011 2:20 pm
Forum: Off topic
Topic: Impact! Earth!
Replies: 7
Views: 2033

LHC calculator

How hard can it be to make a website that allows you to input all kinds of parameters and then says: "the probability that the LHC will destroy the earth under these circumstances is zero"?
by Tau
Sun Oct 03, 2010 7:10 pm
Forum: The Accelerator
Topic: Current Events Discussion
Replies: 512
Views: 81869

Re: Current Events Discussion

If you don't want to watch the 40 minute video, you can see just the slides at
http://indico.cern.ch/getFile.py/access ... fId=103500
The information about the dust is on slide 20.
by Tau
Mon Sep 27, 2010 9:39 am
Forum: The Accelerator
Topic: Portal updates.
Replies: 4
Views: 2071

Re: Portal updates.

My quick wishlist of things that are very useful for keeping up with the LHC. I would keep this together somehow: Frequently used vistar pages: LHC1, LHC3, LHCCONFIG, LHCCOORD, LHC2, LHCluminosity The progress page: http://lhc-commissioning.web.cern.ch/lhc-commissioning/news-2010/LHC-latest-news.htm...