Collisions any minute..."We are now at the operating energy, 1.38 TeV in each beam ... the highest energy ever for an accelerated lead beam"
Lead collisions
Lead collisions
From the log book
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- Posts: 1
- Joined: Sat Nov 06, 2010 3:34 pm
Re: Lead collisions
LHC Page 1 on vistar says they are "preparing for squeeze". What exactly is the squeeze?
Re: Lead collisions
Collisions have occurred. Looking for pics now...
Re: Lead collisions
first heavy ion collisions in CMS, ALICE and ATLAS! not yet with "stable beams" so no tracks seen (tracker switched off) but all going well!
http://twitter.com/CMSexperiment/status ... 1639561216
http://twitter.com/CMSexperiment/status ... 1639561216
Re: Lead collisions
I'm glad to see the transition to heavy ions went as smoothly as possible. And more importantly, that we were not eaten by strangelets or vacuum bubbles.
- CharmQuark
- Site Admin
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- Location: Berwick-Upon-Tweed (UK)
Re: Lead collisions
I am just soooooooooooo proud of you for getting though it stephen well doneStephen wrote:I'm glad to see the transition to heavy ions went as smoothly as possible. And more importantly, that we were not eaten by strangelets or vacuum bubbles.
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.
- GrinchQuark
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Re: Lead collisions
Strangelets? I've so much to learn.
Re: Lead collisions
I wonder how could they have collisions in Atlas and CMS... AFAIK there was just one bunch in each beam and that should collide just in ALICE.
Beam-gas collisions?
Beam-gas collisions?
Re: Lead collisions
No, there was two bunches in each beam.Kasuha wrote:AFAIK there was just one bunch in each beam..
http://lhc-commissioning.web.cern.ch/lh ... an2010.htm
Re: Lead collisions
Beam 1 has buckets 1 and 13371
Beam 2 has buckets 1 and 22281
Beam 1 Bucket 1 will collide with Beam 2 bucket 1 at IP1 ATLAS and IP5 CMS
Beam 1 bucket 13371 will collide with Beam 2 bucket 22281 at IP2 ALICE because:
22281 - 13371 = 8910 the exact difference between two buckets to collide at IP2
Beam 2 has buckets 1 and 22281
Beam 1 Bucket 1 will collide with Beam 2 bucket 1 at IP1 ATLAS and IP5 CMS
Beam 1 bucket 13371 will collide with Beam 2 bucket 22281 at IP2 ALICE because:
22281 - 13371 = 8910 the exact difference between two buckets to collide at IP2
- DCWhitworth
- LHCPortal Guru
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- Joined: Mon Nov 30, 2009 8:13 am
- Location: Norwich, UK
Re: Lead collisions
Accelerator mode - Ion Physics.
First time I've seen that
Fun stuff
First time I've seen that
Fun stuff
DC
The LHC - One ring to rule them all !
The LHC - One ring to rule them all !
- DCWhitworth
- LHCPortal Guru
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- Joined: Mon Nov 30, 2009 8:13 am
- Location: Norwich, UK
Re: Lead collisions
El Reg has another awesome story
http://www.theregister.co.uk/2010/11/08 ... omfoolery/
And I have changed the LHCPortal splash screen to a recent CMS lead collision..
http://www.theregister.co.uk/2010/11/08 ... omfoolery/
And I have changed the LHCPortal splash screen to a recent CMS lead collision..
Re: Lead collisions
Now that's a mess of a collision
- CharmQuark
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- Location: Berwick-Upon-Tweed (UK)
Re: Lead collisions
Awesome
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.