That is what we plan to find out!
There is nothing fundamental which prevents it.
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Is anyone following us:
http://indico.cern.ch/event/282344/
You thought LHC was good! This will blow it out of the water.
http://indico.cern.ch/event/282344/
You thought LHC was good! This will blow it out of the water.
- Wed Dec 11, 2013 6:23 pm
- Forum: The Accelerator
- Topic: RF frequncy of LHC: 400.789 MHz
- Replies: 5
- Views: 10380
Re: RF frequncy of LHC: 400.789 MHz
The beam must always see the same RF each time it passes. What this means is that the RF frequency, the Circumference of the machine and the speed of the particles are related. The ratio of the RF wavelength to the circumference is called the harmonic number - in LHC this is 35,640 exactly. Once thi...
- Sun Jul 15, 2012 7:56 am
- Forum: The Accelerator
- Topic: 2012 Events Discussion
- Replies: 100
- Views: 216588
Re: 2012 Events Discussion
... Mainly having more time to get ready!
- Wed Jul 11, 2012 7:50 pm
- Forum: The Accelerator
- Topic: 2012 Events Discussion
- Replies: 100
- Views: 216588
Re: 2012 Events Discussion
The decision has been taken to extend the run to beyond Christmas with the likely scenario to continue p-p until Christmas and delay the p-Pb run until January (exact arrangement still under discussion). Last beams will be on 11th Feb 2013. The main reason for the extension is technical, and not Phy...
- Wed Jul 11, 2012 7:44 pm
- Forum: The Accelerator
- Topic: Why So QUIET ??? Machine Development !!!!!
- Replies: 4
- Views: 10481
Re: Why So QUIET ??? Machine Development !!!!!
OK Lets give it a go .... 25 ns. . . . . new settings !! . . . . . . . (what does 25ns mean if you are injecting one bunch ? just a doubled RF ?) 25ns is the distance between 2 adjacent bunches which are delivered from the injectors. It only makes sense in multi-bunch injections. A maximum of 72 bun...
- Wed May 23, 2012 7:22 pm
- Forum: The Accelerator
- Topic: 1fb/week?
- Replies: 5
- Views: 10553
Re: 1fb/week?
Will continue to adiabatically push up the bunch intensity - to around 1.6x10+11 ppb. We know we can do this without increasing the emittance from the injectors too much. but don't expect any jumps ... If 1.6 is reached you can expect 20% more lumi ... say 7x10+33. Unlikely to get much higher than t...
- Tue May 22, 2012 7:30 pm
- Forum: The Accelerator
- Topic: 2012 Events Discussion
- Replies: 100
- Views: 216588
Re: 2012 Events Discussion
Can anybody explain to me what causes the short downward blips every 100 mins or so in the luminosity trace during stable beams? At first I thought they were glitches but they seem too regular to be unintentional. Fingers crossed but things seem to be running smoothly again. Impressive work. Every ...
- Tue May 22, 2012 7:27 pm
- Forum: The Accelerator
- Topic: 1fb/week?
- Replies: 5
- Views: 10553
Re: 1fb/week?
Made 980pb-1 last week ... hopefully more this week
- Thu Apr 19, 2012 6:50 pm
- Forum: The Accelerator
- Topic: Why is there a difference in the Cms and Atlas luminosities?
- Replies: 9
- Views: 15071
Re: Why is there a difference in the Cms and Atlas luminosit
Last year they reached 3.5/nb/s with beta* = 1.0 so with beta* = 0.6 they should expect 3.5/0.6 = 5.8/nb/s assuming intensity and emittance are the same. So the CMS figure looks better. the VdM scans still need analysis before feeding back new calibrations. The "correct" value will lie somewhere be...
- Thu Dec 15, 2011 9:51 pm
- Forum: New Users Start Here
- Topic: just to say Hi. thinking about gyroscopes
- Replies: 3
- Views: 7149
Re: just to say Hi. thinking about gyroscopes
Just wondered. The speed being almost c, resulting in very high relativistic mass, and very high omega (10e5 to 10e6 or so), what is the gyrocopic effect of a one direction mass/energy flow through the LHC on the orientation of the rotational axis of the earth?? Anyone did the math? Now that there ...
- Mon Oct 17, 2011 8:27 pm
- Forum: The Accelerator
- Topic: 2011 Events Discussion
- Replies: 184
- Views: 257061
Re: 2011 Events Discussion
For those who don't know already, 5 fb-1 represents around 350 trillion proton-proton collisions (3.5x10+14). In that lot we might reasonably expect to have recorded around 100 million W's and Z's, maybe a million top events and perhaps 20-30,000 higgs (if it exists!). Talk about looking for a piece...
- Tue Oct 04, 2011 7:05 pm
- Forum: The Accelerator
- Topic: Hang gliding weasels ???
- Replies: 3
- Views: 7245
Re: Hang gliding weasels ???
...It goes back a lot further than that ...
the original quote was used in LEP and came from Steven Wright
"Eagles may soar, but weasels don't get sucked into jet engines."
the original quote was used in LEP and came from Steven Wright
"Eagles may soar, but weasels don't get sucked into jet engines."
- Tue Sep 20, 2011 6:00 pm
- Forum: The Accelerator
- Topic: Presentation for the Grid for UK Particle Physics
- Replies: 5
- Views: 9453
Re: Presentation for the Grid for UK Particle Physics
It won't tell you lot anything you don't already knowTalking of LHC status reports, next week there is an LHCC open session which starts with an LHC status report by someone familiar http://indico.cern.ch/conferenceDisplay ... fId=153317
- Tue Aug 02, 2011 10:47 am
- Forum: The Accelerator
- Topic: 2011 Events Discussion
- Replies: 184
- Views: 257061
Re: 2011 Events Discussion
Record Peak luminosity is now around 2050 ub-1s-1looks like they did manage 2000/ubs good stuff!