Search found 40 matches
- Fri Aug 24, 2018 5:53 pm
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
Getting 1.0/fb daily is achievable, but only with initial lumi in excess of 20,000. This used to be achievable, but apparently no more. What's the problem?
- Sun Jul 22, 2018 12:16 am
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
A whole 1/fb within 24 hrs!
- Wed Jun 13, 2018 7:45 pm
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
Ah OK tnx. MD currently...
- Tue Jun 12, 2018 5:09 am
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
22:32 to 23:55 I believe?
- Sun Jun 10, 2018 9:59 pm
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
New switchover record! Run #6773->6774 took 1h23m !! (dump->SB).
Good lumi too, so we shall see...
Good lumi too, so we shall see...
- Sat Jun 09, 2018 4:42 pm
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
Looks like the current run (#6675) will smash all previous LHC records for sustainable integrated lumi per 24 hour period - at least 1/fb. :dance: Notionally this consists of 2 switchovers (time of dump to time of next stable beams) and 2 runs. The switchovers can be 2 hours each and the runs can b...
- Sun Jun 03, 2018 5:49 pm
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
There have since been a raft of subsequent faults, all different in nature. The latest is a pair of cryo failures.
- Sun May 20, 2018 6:05 am
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
16L2 wreaking havoc once more. Maybe clean it out for good?
- Thu May 17, 2018 9:15 am
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
I raise my beer to the unsung Operator heroes!
- Tue May 15, 2018 9:22 pm
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
I thought they'd fixed 16L2 by removing a bunch of frozen air during the shutdown. What's the theory about the nature of the 16L2 UFO?
- Tue May 15, 2018 10:11 am
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
What's the highest energy particle that can be discovered currently? (assuming such a beast exists). Is it in fact 13 TeV?
- Mon May 14, 2018 7:06 pm
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
Yes, the machine is purring along on song now. Clearly there's an optimal run time for average delivered lumi per time period, which depends on the switchover duration and on the decay exponent coefficient. I suspect that, with 2 hour switchovers, 13+ hours is somewhat too long.
- Sat May 12, 2018 10:09 pm
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
Looks like the current run (#6675) will smash all previous LHC records for sustainable integrated lumi per 24 hour period - at least 1.0 1/fb. :dance: Notionally this consists of 2 switchovers (time of dump to time of next stable beams) and 2 runs. The switchovers can be 2 hours each and the runs ca...
- Thu May 10, 2018 5:20 am
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
Thanks so much for the exquisite detail. As a rank amateur I noticed that the peak initial lumi had been dialled back after 3 abortive starts at 2556b. Seems like starting with >20,000 lumi is a no-no, even though achievable.
- Sun May 06, 2018 10:49 pm
- Forum: The Accelerator
- Topic: 2018 Operation
- Replies: 78
- Views: 235708
Re: 2018 Operation
t(SB) or the current stable beams duration is DIFFERENT on the Page 1 display and the Dashboard display (currently 10:10 hrs on Page1, 11:xx on Dashboard). Fixable? Which is correct?