Weekend of 12-3-09 collision events !

The place to discuss the LHC. Commissioning, operation, issues, events ....
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Xymox
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Re: *** COLLISION ALERT ***

Post by Xymox » Sun Dec 06, 2009 1:07 am

We need some web based one... No software install

If someone knows how to do it right quick... Lets do it now :)

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DCWhitworth
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Re: *** COLLISION ALERT ***

Post by DCWhitworth » Sun Dec 06, 2009 1:07 am

Both beams dumped <sighs> I gotta be somewhere tomorrow morning and it's 1am here.

You'll just all have to make history without me . . .
DC

The LHC - One ring to rule them all !

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Xymox
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Re: *** COLLISION ALERT ***

Post by Xymox » Sun Dec 06, 2009 1:07 am

beams dumped

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Xymox
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Re: *** COLLISION ALERT ***

Post by Xymox » Sun Dec 06, 2009 1:13 am

Page 1 back up....

Danny: Poor Markus... Page 1 has been freezing and stuff..

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Re: *** COLLISION ALERT ***

Post by Lexa » Sun Dec 06, 2009 1:14 am

For IRC, some java applet/webstart exist, but you still need to open, and most likely register, a chat room on a irc server.


Also, today IRC clients are integrated in a lot of IM softwares.

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Xymox
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Re: *** COLLISION ALERT ***

Post by Xymox » Sun Dec 06, 2009 1:16 am

Can you help me find something.. I will set it up now if I can...

Links ? Ideas ?

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Xymox
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Re: *** COLLISION ALERT ***

Post by Xymox » Sun Dec 06, 2009 1:17 am

Beams "debunched" thats interesting.... CMS

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Xymox
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Re: *** COLLISION ALERT ***

Post by Xymox » Sun Dec 06, 2009 1:18 am

So we still have beam... But the Page 1 and LHC-OP cant see it CMS Page

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Xymox
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Re: *** COLLISION ALERT ***

Post by Xymox » Sun Dec 06, 2009 1:18 am

Ok Here it comes

4X4 collisions..... CMS

Wombat
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Re: *** COLLISION ALERT ***

Post by Wombat » Sun Dec 06, 2009 1:21 am

CMS status page says collisions coming next:
6 Dec, 2:15, 4x4 Collisions to come next

LHC informs us that we go for 4-on-4 bunches with collisions next.

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Re: *** COLLISION ALERT ***

Post by aperture_science » Sun Dec 06, 2009 1:22 am

stable beams are..
♪ This was a triumph ♪

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Re: *** COLLISION ALERT ***

Post by LHC_Insider » Sun Dec 06, 2009 1:23 am

Xymox wrote:Beams "debunched" thats interesting.... CMS
The history of why we care about debunched beams... Firstly the bunch-train profile of the LHC has a big gap (the abort gap) at the end which allows the dump kickers to ramp up with no particles passing, otherwise it would spray them as the kicker ramped.

The Tevatron has an identical dump setup - you don't want to ramp kickers with beam. On one occasion, a fully accelerated beam was in the Tevatron when for a variety of reasons the beam debunched. This means that you lose the abort gap. A beam dump was triggered, but with no abort gap, and with CDF (one of the Tevatron experiments) just upstream of the dump kickers, their silicon detector got sprayed with very high energy protons, wiping out a proportion of the sensing and electronics.

The LHC has protection mechanisms in place to ensure that debunched beam dumps are safe(r), and these need to be tested, along with all the other machine protection systems.

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Re: *** COLLISION ALERT ***

Post by Lexa » Sun Dec 06, 2009 1:24 am

The most popular IRC server are here:
http://irc.netsplit.de/networks/top100.php

Still need to find a good web client.

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Re: *** COLLISION ALERT ***

Post by Xymox » Sun Dec 06, 2009 1:27 am

Lost Page 1....

Yes I found a IRC place... We could just use a room of our choice with no on in it... Rude as that is....

Lemme play with it for a minute

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Re: *** COLLISION ALERT ***

Post by Xymox » Sun Dec 06, 2009 1:32 am

Ok we could try out this one..

Go to http://searchirc.com/irc-LHC-1 and choose #2 by clicking the #LHC...

Hey it says LHC doesn't it ?

Lets see if everybody can use it...

Im already in the room as user 127

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