Max bunches under the new scheme is about 1920 according to the following report:
http://home.cern/cern-people/updates/20 ... tion-holes
Search found 13 matches
- Tue Sep 12, 2017 3:40 pm
- Forum: The Accelerator
- Topic: 2017 Operation
- Replies: 72
- Views: 171239
- Sun Jun 12, 2016 1:24 am
- Forum: The Accelerator
- Topic: How can the intensity be increased?
- Replies: 3
- Views: 8160
Re: How can the intensity be increased?
You might find the following calculator interesting, especially the INPUT parameters and the formulae in the OUTPUT section: https://lpc.web.cern.ch/lpc/lumi2.html I think that this paper provides a quite accessible introduction to how each of these parameters contributes to the resulting luminosity...
- Wed Jun 01, 2016 11:54 pm
- Forum: The Accelerator
- Topic: How stringent is the ~100fb for 2016-2018?
- Replies: 7
- Views: 11978
Re: How stringent is the ~100fb for 2016-2018?
Currently at 2048b, the LHC is accumulating ~1.5fb/week for 30% stable beams which is great news, considering the lost two weeks over bad luck. If they can get to 2800 bunches, that should mean ~2fb/week bringing 25fb/year on target! At the moment they appear to be limited to 72 bunches per injecti...
- Wed Dec 05, 2012 6:44 pm
- Forum: The Accelerator
- Topic: 2012 Events Discussion
- Replies: 100
- Views: 217861
Re: 2012 Events Discussion
For interest, a video of the latest machine status report by Steve Myers at today's 112th LHCC:
http://cdsweb.cern.ch/record/1497688
http://cdsweb.cern.ch/record/1497688
- Mon Jun 25, 2012 8:48 pm
- Forum: Science
- Topic: sub-atomic particles travelling faster than light
- Replies: 7
- Views: 13468
Re: sub-atomic particles travelling faster than light
I'm hopeful that the relocation would generate discussion rather than intending to be critical of the subject. :-)CharmQuark wrote:I see no reason why it shouldn't stay here Terry :thumbup:
- Thu Jun 21, 2012 4:10 pm
- Forum: Science
- Topic: sub-atomic particles travelling faster than light
- Replies: 7
- Views: 13468
Re: sub-atomic particles travelling faster than light
I would suggest that moving this post into Other topics » Off topic or (tangentially) Other topics » Quantum Philosophy might generate discussion.
- Thu Jun 21, 2012 3:58 pm
- Forum: The Accelerator
- Topic: How easy is it to switch between 25ns and 50ns operation?
- Replies: 13
- Views: 21703
Re: How easy is it to switch between 25ns and 50ns operation
I don't know what is going on with the injection kickers heating up. It's not an issue I've come across before and I don't know if it was expected or not. Presumably they will look at ways of addressing it in LS1. If it's related to bunch intensity then presumably it will be eased by 25 ns too. Fro...
- Wed Jun 13, 2012 12:26 pm
- Forum: The Accelerator
- Topic: 2012 Events Discussion
- Replies: 100
- Views: 217861
Re: 2012 Events Discussion
For those with an interest...
The latest machine status report was presented at this morning's LHCC 110:
http://indico.cern.ch/getFile.py/access ... fId=194183
The video recording is expected to follow:
http://cdsweb.cern.ch/record/1455674?ln=en
The latest machine status report was presented at this morning's LHCC 110:
http://indico.cern.ch/getFile.py/access ... fId=194183
The video recording is expected to follow:
http://cdsweb.cern.ch/record/1455674?ln=en
- Wed May 16, 2012 12:43 am
- Forum: The Accelerator
- Topic: 2012 Events Discussion
- Replies: 100
- Views: 217861
Re: 2012 Events Discussion
Onwards indeed... "During the stable beams, the injectors profited to fix the problem of emittance blow-up. The investigation was so proficuous that the SPS started re-measuring low emittances as before the TS and we decided to dump to refill." The current fill had initial luminosities exceeding 530...
- Sat Oct 02, 2010 9:38 pm
- Forum: The Accelerator
- Topic: Current Events Discussion
- Replies: 512
- Views: 612578
Re: Current Events Discussion
The incidence of the UFOs does not appear to be concentrated at the location of the events of September 2008.
Source is three weeks old: http://cdsweb.cern.ch/record/1294051 (at 35 mins)
Source is three weeks old: http://cdsweb.cern.ch/record/1294051 (at 35 mins)
- Sat Oct 02, 2010 10:11 am
- Forum: The Accelerator
- Topic: Current Events Discussion
- Replies: 512
- Views: 612578
Re: Current Events Discussion
At the moment the machine operators believe the UFOs to be the result of dislodged dust falling through the beam. They hope that this exists as an artefact of the machine construction rather than a systematic problem and that it will be burned away by continual use so that the number of UFO events d...
- Tue Jul 13, 2010 11:38 pm
- Forum: The Accelerator
- Topic: Current Events Discussion
- Replies: 512
- Views: 612578
- Thu Apr 01, 2010 9:16 pm
- Forum: New Users Start Here
- Topic: Hi - and please let me in :-)
- Replies: 3
- Views: 6709