Weekend of 12-3-09 collision events !
Re: *** COLLISION ALERT ***
We need some web based one... No software install
If someone knows how to do it right quick... Lets do it now
If someone knows how to do it right quick... Lets do it now
- DCWhitworth
- LHCPortal Guru
- Posts: 599
- Joined: Mon Nov 30, 2009 8:13 am
- Location: Norwich, UK
Re: *** COLLISION ALERT ***
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 . . .
You'll just all have to make history without me . . .
DC
The LHC - One ring to rule them all !
The LHC - One ring to rule them all !
Re: *** COLLISION ALERT ***
beams dumped
Re: *** COLLISION ALERT ***
Page 1 back up....
Danny: Poor Markus... Page 1 has been freezing and stuff..
Danny: Poor Markus... Page 1 has been freezing and stuff..
Re: *** COLLISION ALERT ***
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.
Also, today IRC clients are integrated in a lot of IM softwares.
Re: *** COLLISION ALERT ***
Can you help me find something.. I will set it up now if I can...
Links ? Ideas ?
Links ? Ideas ?
Re: *** COLLISION ALERT ***
Beams "debunched" thats interesting.... CMS
Re: *** COLLISION ALERT ***
So we still have beam... But the Page 1 and LHC-OP cant see it CMS Page
Re: *** COLLISION ALERT ***
Ok Here it comes
4X4 collisions..... CMS
4X4 collisions..... CMS
Re: *** COLLISION ALERT ***
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.
- aperture_science
- Posts: 4
- Joined: Fri Dec 04, 2009 10:48 pm
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- LHCPortal Guru
- Posts: 15
- Joined: Sat Nov 28, 2009 11:05 pm
Re: *** COLLISION ALERT ***
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.Xymox wrote:Beams "debunched" thats interesting.... CMS
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.
Re: *** COLLISION ALERT ***
The most popular IRC server are here:
http://irc.netsplit.de/networks/top100.php
Still need to find a good web client.
http://irc.netsplit.de/networks/top100.php
Still need to find a good web client.
Re: *** COLLISION ALERT ***
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
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
Re: *** COLLISION ALERT ***
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
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