Search found 159 matches

by Danny252
Wed Dec 02, 2009 12:47 am
Forum: The Accelerator
Topic: Daily Schedules and Hiccups
Replies: 41
Views: 10300

Re: Daily Schedules and Hiccups

"18kV Drop at Point 1, 6 LHC Sectors Tripped".

Page 1 suggests 3 hours to fix, more info coming soon. Sounds like a superconductor problem of some sort
by Danny252
Tue Dec 01, 2009 10:48 pm
Forum: The Accelerator
Topic: Daily Schedules and Hiccups
Replies: 41
Views: 10300

Re: Daily Schedules

Tuesday 1st Evening: -- Comments: Just a lot of testing hardware, seemingly. -- Afternoon/evening: - MPS BLM tests, including collimator moves provoke magnet trips (orbit correctors) check phase space coverage of collimators Night: - Aperture/kick response Look ahead: Wednesday Morning: - TDI set up...
by Danny252
Tue Dec 01, 2009 8:51 pm
Forum: The Accelerator
Topic: Old Breaking news 11/30-12/2/09
Replies: 20
Views: 8679

Re: *** Breaking news ***

heladepela wrote:Great stuff Danny, Xymox, been digging around a bit more !!
Got a JCB we can borrow? It's getting quite hard to dig further with just these spades :(

Hopefully we may be getting information on some of the other VISTARs - such as the SPS and LINAC screens.
by Danny252
Tue Dec 01, 2009 8:37 pm
Forum: New Users Start Here
Topic: What do the displays mean ?
Replies: 85
Views: 59821

Re: What do the displays mean ?

Tim Bergel wrote:I found BRAN in the acronyms list:

Beam RAte Neutrals (TAN type luminosity monitor) and TAN means Target Absorber Neutral

so yes, a type of luminosity monitor ...
It helps if I turn "case sensitive" off when searching - no wonder FF couldn't find "bran" on the acronyms sheet...
by Danny252
Tue Dec 01, 2009 7:02 pm
Forum: The Accelerator
Topic: Old Breaking news 11/30-12/2/09
Replies: 20
Views: 8679

Re: *** Breaking news ***

Page1 format has also changed: the beamTV images are not showing now and the whole mid-page area is different ( blank for now). I also noticed the "Page 1" and "LHC Operations" " Beam Current"(I) values were very different since yesterday. The "LHC Operations" I values seemed to match the Intensity...
by Danny252
Tue Dec 01, 2009 1:53 pm
Forum: The Accelerator
Topic: Daily Schedules and Hiccups
Replies: 41
Views: 10300

Daily Schedules and Hiccups

I'll keep this topic updated with the Daily Schedules that can be found in LHCb's Logbook. Maybe mention the odd hiccup too if it affects schedules Tuesday 1st: -- Comments: Collisions planned this week (for Experiments to play around with?) at 450GeV per beam. Schedule is going as planned, they're ...
by Danny252
Tue Dec 01, 2009 1:46 pm
Forum: The Accelerator
Topic: Old Breaking news 11/30-12/2/09
Replies: 20
Views: 8679

Re: *** Breaking news ***

Thanks for the info, LHC_Insider - certainly given me a better understanding of some parts of the machine.

Currently the machine is set to 7.864 TeV - I don't know if the plan is to ramp a beam up to this energy today?
by Danny252
Tue Dec 01, 2009 1:43 pm
Forum: New Users Start Here
Topic: What do the displays mean ?
Replies: 85
Views: 59821

Re: What do the displays mean ?

Status Op has changed today! First off the background graphs have been changed to logarithmic scales - which has lead to them making much more sense and being more readable. Also, the luminosity reading on the top graph and integrated luminosity reading have both been replaced with BRAN Count. I bel...
by Danny252
Mon Nov 30, 2009 4:43 pm
Forum: New Users Start Here
Topic: What do the displays mean ?
Replies: 85
Views: 59821

Re: What do the displays mean ?

Latest Page 1 - thanks to employees of CERN for their input on this version.

Image
by Danny252
Sun Nov 29, 2009 12:16 am
Forum: The Accelerator
Topic: Schedule
Replies: 7
Views: 2461

Re: Schedule

These gluons can split to give a quark and an antiquark, which then recombine to give the original gluon again; while it is on its travels. Similar to Photons and Pair Production? Well, there's something I learnt today (along with the rest of your post, really!). Though surely you get some antiquar...
by Danny252
Sat Nov 28, 2009 10:32 pm
Forum: The Accelerator
Topic: LHC page 1 Moveable devices
Replies: 2
Views: 2915

Re: LHC page 1 Moveable devices

It also includes LHCb's VELO - but thanks for working out what "Roman Pots" meant!

Both detectors are liable to be damaged if used on anything but a stable beam.
by Danny252
Sat Nov 28, 2009 7:22 pm
Forum: New Users Start Here
Topic: How do I find out what's going on?
Replies: 1
Views: 1325

How do I find out what's going on?

Over the last week I've worked out quite reliably how to check on what the LHC is up to. This isn't a guide to deciphering displays - it's a guide to which ones to check to get an idea of what's happening right now without having to ask. Check out the growing help pages and "What do the displays mea...
by Danny252
Sat Nov 28, 2009 6:58 pm
Forum: New Users Start Here
Topic: What do the displays mean ?
Replies: 85
Views: 59821

Re: What do the displays mean ?

Updated Page 1 down 2 posts

Status Op:

Image
by Danny252
Sat Nov 28, 2009 5:50 pm
Forum: Portal link and forum suggestions
Topic: Portal Link Changes 11/27/09
Replies: 5
Views: 3884

Re: Portal Link Changes 11/27/09

Possibly we could have a "What's This?" link somewhere on your frames around the pages - so on Page 1, it links to a page giving details for Page 1; on Op Status, it links to a page on that. Would be an idea to have a central page linking to all these help pages instead/as well. But we do need to tr...
by Danny252
Sat Nov 28, 2009 5:22 pm
Forum: The Accelerator
Topic: problems 10/26/09 - 10/28/09
Replies: 28
Views: 4747

Re: ** Current problem **

Xymox wrote:people puting on Tin Foil Hats
You take yours off?! My god, there's no hope left now...

...I'll get my tinfoil coat.