Search found 159 matches

by Danny252
Sat Apr 10, 2010 1:08 am
Forum: The Accelerator
Topic: Current Events Discussion
Replies: 512
Views: 66487

Re: Current Events Discussion

Seems like they've managed a successful test with a 1E11 bunch! Kinda makes the current 5E9 bunches seem inadequate ;)
by Danny252
Tue Apr 06, 2010 1:55 pm
Forum: The Accelerator
Topic: Beam 2 reduced stability?
Replies: 2
Views: 947

Re: Beam 2 reduced stability?

B2 has always been slightly worse than B1 - due to the fact it has a different injection route and path in the LHC, which is apparently (slightly) less well tuned than B1's paths.
by Danny252
Mon Apr 05, 2010 10:39 pm
Forum: The Accelerator
Topic: intensity not dropping in 12 hours
Replies: 13
Views: 2294

Re: intensity not dropping in 12 hours

Can someone explain to me why the intensity was so low with the collisions? I figure it was planned, but would like to confirm it :) Would also appreciate it if someone has a timeplan of increasing intensity :) Tnx They were using only 2 bunches per beam - versus the [quite a few more] bunches they...
by Danny252
Mon Apr 05, 2010 10:35 pm
Forum: The Accelerator
Topic: Current Events Discussion
Replies: 512
Views: 66487

Re: Current Events Discussion

I've just checked the LHC status screen 1 and there's the energy set to 7864 GeV. Is it a test of the maximum energy setting or just some nonsense? I thought that the 2x7 GeV collisions will require major reconfiguration of the whole device after the 2x3.5 burn in. Anyway, I was watching the 18+ ho...
by Danny252
Mon Apr 05, 2010 1:21 pm
Forum: Controversial topics
Topic: Dr Eric Johnson
Replies: 8
Views: 3691

Re: Several biggest errors of particle physicists.

But if you look at the casualty numbers caused by their even less energetic bites Well done, you've proven yet again that you haven't got a clue nor the ability to hold a conversation. Next you'll be called a .gif of a probe intentionally crashing into the moon an unexplained phenomenon... oh, wait...
by Danny252
Mon Apr 05, 2010 1:44 am
Forum: The Accelerator
Topic: Protons
Replies: 11
Views: 2642

Re: Protons

Sphereix8 wrote:Harbles, thanks for the link, great read, question answered. Danny252, thanks captain obvious ;-)
You never know - some people think the LHC has electrons and antiprotons, never mind knowing what Hydrogen is!
by Danny252
Sun Apr 04, 2010 1:33 pm
Forum: The Accelerator
Topic: LHC Cycle Info
Replies: 11
Views: 3001

LHC Cycle Info

Some nice info on the progress page today: End of Fill studies and requested time allocated - http://lhc-commissioning.web.cern.ch/lhc-commissioning/news-2010/EndOfFillStudies.xlsx Procedure from end of ramp to physics (basically, how to run the LHC in Physics mode!) - http://lhc-commissioning.web.c...
by Danny252
Sun Apr 04, 2010 1:30 pm
Forum: The Accelerator
Topic: Why is energy ramp-up/ramp-down so slow?
Replies: 5
Views: 2689

Re: Why is energy ramp-up/ramp-down so slow?

Is there also an element of limits of the local power grid - in that it can only supply/dissapate power at a certain rate?
by Danny252
Sat Apr 03, 2010 12:24 pm
Forum: The Accelerator
Topic: Protons
Replies: 11
Views: 2642

Re: Protons

Does anyone have an understanding of how the proton source works? I've seen pictures of hydrogen bottles on the linacs listed as the proton source, but I don't see how they extract the protons from the hydrogen. Hydrogen is a proton with an electron flying around it - nothing more (excluding the ve...
by Danny252
Fri Apr 02, 2010 2:55 pm
Forum: The Accelerator
Topic: Current Events Discussion
Replies: 512
Views: 66487

Re: Current Events Discussion

Danny252 wrote:by 2000.
2200 now!
by Danny252
Fri Apr 02, 2010 2:11 pm
Forum: The Accelerator
Topic: Current Events Discussion
Replies: 512
Views: 66487

Re: Current Events Discussion

Seems like Cryo is rather borked again today. Page 1 says they intend to sort it out by 2000.

So whilst we wait, seems we'll be attempting to break Igor...
by Danny252
Fri Apr 02, 2010 2:07 pm
Forum: Science
Topic: Britain to get new particle collider
Replies: 10
Views: 3370

Re: Britain to get new particle collider

Kasuha wrote:Moscow tube can provide much bigger circumference, think about energies they could achieve there!
Image
I can see they've even got beam dumps and injection lines in place already!
by Danny252
Thu Apr 01, 2010 2:42 pm
Forum: Science
Topic: Britain to get new particle collider
Replies: 10
Views: 3370

Britain to get new particle collider