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Re: Current Events Discussion

Posted: Tue Apr 13, 2010 5:03 am
by mrgumby
anyone know if there is any way to get the CMS "Fireworks Event Display Software"? (for windows?) and then of course somehow find a feed for it? :?:

Re: Current Events Discussion

Posted: Wed Apr 14, 2010 11:47 pm
by tomey36
can anyone explain to me what the LBDS studies, and the Schotty measurments are. thanks in advance.

Re: Current Events Discussion

Posted: Thu Apr 15, 2010 12:01 am
by Celladoor
LBDS = LHC Beam Dump System

Re: Current Events Discussion

Posted: Thu Apr 15, 2010 12:06 am
by CharmQuark
Schottky measurements are done by passing the beam through the 2 plates of a capacitor and give extremely detailed results of many beam parameters without disturbing the beam.

Re: Current Events Discussion

Posted: Thu Apr 15, 2010 12:09 am
by mrgumby
tomey36 wrote:can anyone explain to me what the LBDS studies, and the Schotty measurments are. thanks in advance.
Lhc Beam Dumping system.

Because of the amount of energy involved, they can't just turn the beams off. The Beams need to be Dumped in a controlled fashion.

A much more technical explanation is here :http://epaper.kek.jp/e08/papers/wepp059.pdf

Schottky measurement seems to be a way of measuring the beam using capacitance without disturbing the beam. Its a bit beyond me tho so I don't guarantee that.

:)

Re: Current Events Discussion

Posted: Thu Apr 15, 2010 12:10 am
by tomey36
wow thanks for the quick responses that really clears things up :D

Re: Current Events Discussion

Posted: Thu Apr 15, 2010 12:15 am
by mrgumby
No worries....glad to help

Google is excellent at finding all this stuff..just add lhc to the query like "lbds lhc"
:)

Re: Current Events Discussion

Posted: Thu Apr 15, 2010 12:56 am
by pixelmasseuse
some background on Schottky measurements...

http://cdsweb.cern.ch/record/1213284/files/p407.pdf

this has less math, more diagrams:

http://www-bd.gsi.de/conf/juas/schottky_trans.pdf

Re: Current Events Discussion

Posted: Thu Apr 15, 2010 8:18 am
by mrgumby
The big deal at the moment seems to be squeezing the beams. Is there any URL where we can see the squeeze numbers as they happen? I thought op vistars lhcconfig was showing it but that doesn't update the Beta as things change. :)

Re: Current Events Discussion

Posted: Thu Apr 15, 2010 10:16 pm
by mrgumby
I've had people question the amount of money the LHC costs....This is the answer I've come up with.

Why do we need to spend huge amounts of money on the LHC when we could spend it on Starving Children/Cancer Research etc?

There are many answers. The one I like is: We are learning what makes the universe work. The more we understand, the more we can do. An analogy would be the humble kitchen stove. The more we understand it, the more use we can get out of it.
No-one knows what we will discover with the LHC, but we do know that we will find completely new knowledge. If we wish to develop new ways to do things, like fight cancer or grow crops better, we need new knowledge to do it.

If you like it please feel free to use it.
:)

Re: Current Events Discussion

Posted: Thu Apr 15, 2010 10:35 pm
by DCWhitworth
I think it is human nature to push boundaries and it is important that as a society we continue to do this. Ultimately what drives improvement is innovation and discovery not wise investment in food or even infrastructure. Blue-sky thinking and research is crucial, without it we will stagnate as a society.

Re: Current Events Discussion

Posted: Fri Apr 16, 2010 12:14 am
by mrgumby
I agree with that as strongly as it is possible to agree with anything.

Believe it or not..I actually have a Question Mark tattooed on my arm..... :)

I use the other reason when people just don't get the deeper one.

Re: Current Events Discussion

Posted: Fri Apr 16, 2010 12:18 am
by CharmQuark
Mrgumby do you really? :o have you got pictures? :happy-jumpyellow:

Re: Current Events Discussion

Posted: Fri Apr 16, 2010 12:27 am
by mrgumby
yes
Image1.jpg
Image1.jpg (9.13 KiB) Viewed 5569 times

Re: Current Events Discussion

Posted: Fri Apr 16, 2010 12:37 am
by CharmQuark
OMG \o/ that is awesome :D Love it :dance: anyways sorry to sidetrack things :whistle: