Current Events Discussion

The place to discuss the LHC. Commissioning, operation, issues, events ....
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Tim Bergel
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Re: Current Events Discussion

Post by Tim Bergel » Tue Aug 17, 2010 9:13 am

> And they're planning to test bunch trains too

So I see. I haven't managed to find out exactly what a bunch train is - though I can make a good guess - can anybody give me a shortish description?

And 48 bunch operations too ... very impressive steady progress.
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ikarus177
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Re: Current Events Discussion

Post by ikarus177 » Tue Aug 17, 2010 9:36 am

Hi,

as they are planning to test "bunch train operation (1 train of 4 bunches, each separated by 150 ns)", i think they are just going to put the bunches in buckets separated by 150ns (i.e. moving the bunches closer together).

Please correct me, if I should be wrong!

Best regards
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jmayes
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Re: Current Events Discussion

Post by jmayes » Wed Aug 18, 2010 10:51 pm

:dance: :clap: Man I like that chart now Ramp up to 3.5 and back down in 30 minutes!!!

Now they can really step up the short tests.

Great job guys!!! :angry-screaming:
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CharmQuark
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Re: Current Events Discussion

Post by CharmQuark » Wed Aug 18, 2010 11:10 pm

nice work guys :clap:
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DCWhitworth
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Re: Current Events Discussion

Post by DCWhitworth » Thu Aug 19, 2010 6:09 pm

48 bunches coming up !! Hold onto your hat. :dance:
DC

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CharmQuark
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Re: Current Events Discussion

Post by CharmQuark » Thu Aug 19, 2010 6:36 pm

this pleases me sooooooooooooo much :dance:
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PhilG
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Re: Current Events Discussion

Post by PhilG » Thu Aug 19, 2010 6:49 pm

Expected 12 steps for 48 bunches, but saw 14!
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DCWhitworth
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Re: Current Events Discussion

Post by DCWhitworth » Thu Aug 19, 2010 7:27 pm

PhilG wrote:Expected 12 steps for 48 bunches, but saw 14!
Looks like a number of them are of different sizes.
DC

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Bornerdogge
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Re: Current Events Discussion

Post by Bornerdogge » Thu Aug 19, 2010 7:31 pm

Does anyone know when they're going to use 10A/s ramp rate for regular operations? Since the successful test of last week end I haven't seen anything...
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Harbles
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Re: Current Events Discussion

Post by Harbles » Thu Aug 19, 2010 9:29 pm

New record inst. Luminosity >6 (ub.s)^-1 using 48 bunch beams.

Bornerdogge I would assume so as anything to speed up recovery times is a good thing.
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CharmQuark
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Re: Current Events Discussion

Post by CharmQuark » Thu Aug 19, 2010 9:53 pm

Harbles wrote:New record inst. Luminosity >6 (ub.s)^-1 using 48 bunch beams.

Bornerdogge I would assume so as anything to speed up recovery times is a good thing.
Good stuff :thumbup:
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.
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tomey36
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Re: Current Events Discussion

Post by tomey36 » Fri Aug 20, 2010 2:20 am

they are movin fast! allready 48 on 48 stable beams!
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jmayes
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Re: Current Events Discussion

Post by jmayes » Fri Aug 20, 2010 3:30 am

This machine is really starting to hum now! Just think we are still in baby steps, man whats to come will be awesome. :dance: :dance: :dance: :dance: :dance:
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morgad
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Re: Current Events Discussion

Post by morgad » Fri Aug 20, 2010 3:28 pm

A perfect first 48 bunch run ... then we lose cyro in point 6 for 18 hours (no beam before Sat lunch)

Dave
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CharmQuark
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Re: Current Events Discussion

Post by CharmQuark » Fri Aug 20, 2010 5:35 pm

morgad wrote:A perfect first 48 bunch run ... then we lose cyro in point 6 for 18 hours (no beam before Sat lunch)

Dave
ugh :crazy:
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.
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