Current Events Discussion

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Harbles
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Re: Current Events Discussion

Post by Harbles » Sat Aug 07, 2010 10:38 pm

Several of the topics raised in this thread are addressed in this most recent LHC Update of 23 July http://indico.cern.ch/conferenceDisplay ... fId=101927
Should be another one out in a few days.

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DCWhitworth
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Re: Current Events Discussion

Post by DCWhitworth » Sat Aug 07, 2010 10:50 pm

4 x 10e30cm-2s-1 luminosity at the start of the current run ! How did that happen ?
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Re: Current Events Discussion

Post by oxodoes » Sun Aug 08, 2010 12:21 am

AFAIK this was the first time they corrected for chromacity after a ramp ....

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PhilG
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Re: Current Events Discussion

Post by PhilG » Sun Aug 08, 2010 6:44 am

They are also celebrating 1/pb = 1000/nb of integrated luminosity.
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CharmQuark
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Re: Current Events Discussion

Post by CharmQuark » Sun Aug 08, 2010 4:16 pm

WOOOOOOOOOOOHOOOOOOOOOOOOOOO :dance:

WAY TO GO GUYS :clap:
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jochen
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Re: Current Events Discussion

Post by jochen » Wed Aug 11, 2010 5:18 pm

Does anyone know, why the luminosity of alice is so low?

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morgad
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Re: Current Events Discussion

Post by morgad » Wed Aug 11, 2010 8:28 pm

Thursday afternoon plan looks interesting on the co-ordination page ...

10 Amps/sec ramp test :-)

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jmayes
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Re: Current Events Discussion

Post by jmayes » Wed Aug 11, 2010 9:44 pm

What's the amps/sec rate they use now?

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morgad
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Re: Current Events Discussion

Post by morgad » Wed Aug 11, 2010 9:54 pm

2 for ramp, 10 for cycle/rampl down (e.g. no beam)
so they are trying to keep the beam unter control while it is changing 5x faster :-)

I would rather herd cats ...

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chriwi
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Re: Current Events Discussion

Post by chriwi » Thu Aug 12, 2010 6:18 am

will save quite some time once it works.
bye

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jmayes
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Re: Current Events Discussion

Post by jmayes » Fri Aug 13, 2010 2:21 am

Looking forward it, too bad there has to be a ramp down but perhaps it could be made a little faster too. Just don't over do it guys, hate to see another 1 year hold :problem:

Things are progressing well, I am always keeping my fingers crossed ;)

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CharmQuark
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Re: Current Events Discussion

Post by CharmQuark » Sun Aug 15, 2010 12:50 am

they had a record turnaround time today 3 hours 40 mins between physics runs :thumbup:
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Bornerdogge
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Re: Current Events Discussion

Post by Bornerdogge » Mon Aug 16, 2010 9:07 am

They're moving to 48 bunches this week!! :clap:

Plus, if anyone noticed, the beta* values of the LHC configuration page are now updated live...

The last 10A/s ramp attend was done without problems!

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DCWhitworth
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Re: Current Events Discussion

Post by DCWhitworth » Mon Aug 16, 2010 1:25 pm

Bornerdogge wrote:They're moving to 48 bunches this week!! :clap:

Plus, if anyone noticed, the beta* values of the LHC configuration page are now updated live...

The last 10A/s ramp attend was done without problems!
And they're planning to test bunch trains too.

I love the way more and more bits are falling into place :)
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CharmQuark
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Re: Current Events Discussion

Post by CharmQuark » Mon Aug 16, 2010 5:20 pm

: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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