Seminar at CERN, Geneve

tullio
tullio
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Topic 191787

Watch this seminar on public resource computing,September 12:
seminar

Tullio

hockeyguy
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Seminar at CERN, Geneve

i dont see a video there.

tullio
tullio
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RE: i dont see a video

Message 45038 in response to message 45037

Quote:
i dont see a video there.


You're right, but they usually put text material and/or slides online a few days after the event. I should have beem more precise. Sorry.
Tullio

hockeyguy
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when does cern open up? 07

Message 45039 in response to message 45038

when does cern open up? 07 right?

Andreas
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RE: when does cern open up?

Message 45040 in response to message 45039

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when does cern open up? 07 right?

CERN is quite opened up as it is. The Large Hadron Collider will start up next year.

Click my stat image to go to the BOINC Synergy Team site!

tullio
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Next Monday a beam of

Next Monday a beam of mu-neutrinos shall be fired from CERN Labs to the underground Gran Sasso laboratory in central Italy, over a distance of 732 km. There a detector of 1800 metric tons will try to catch the neutrinos and see how many of them have changed flavor (to electron-neutrino or tau-neutrino). This should give informations about the neotrino mass.
Tullio

Alexander W. Janssen
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tullio wrote: RE: Next

Message 45042 in response to message 45041

tullio wrote:

Quote:
Next Monday a beam of mu-neutrinos shall be fired from CERN Labs to the underground Gran Sasso laboratory in central Italy, over a distance of 732 km. There a detector of 1800 metric tons will try to catch the neutrinos and see how many of them have changed flavor (to electron-neutrino or tau-neutrino). This should give informations about the neotrino mass.


Wow. Now this is cool. I ain't no physicist but i never heard about an experiment in which they fired a load of particles "just like that" to some location right through earth :)

I mean i *know* it's not dangerous, but i bet a fiver that if the tabloid-press picks that up all those crazy conspiracy-guys will crawl out of their holes... ;-)

However, cool! Thanks for that bit, really interesting. I only know about that project in Antarctica (or was it Arctica?) where they drilled deep holes into the ice and installed a massive amount of photodetectors in the ice, creating a cube-grid of sensors. Intention: Not only detect neutrinos but also where they come from.

Alex.

"I am tired of all this sort of thing called science here... We have spent
millions in that sort of thing for the last few years, and it is time it
should be stopped."
-- Simon Cameron, U.S. Senator, on the Smithsonian Institute, 1901.

tullio
tullio
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RE: I mean i *know* it's

Message 45043 in response to message 45042

Quote:


I mean i *know* it's not dangerous, but i bet a fiver that if the tabloid-press picks that up all those crazy conspiracy-guys will crawl out of their holes... ;-)

However, cool! Thanks for that bit, really interesting. I only know about that project in Antarctica (or was it Arctica?) where they drilled deep holes into the ice and installed a massive amount of photodetectors in the ice, creating a cube-grid of sensors. Intention: Not only detect neutrinos but also where they come from.

Alex.


Antarctica. There is another project in the Mediterranean (project Antares), You need a big amount of a scintillating liquid or water and/or ice to detect neutrinos. And no, people aren't scared by neutrinos. They have such a nice name, invented by Fermi. Cheers.
Tullio

gravywavy
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RE: I ain't no physicist

Message 45044 in response to message 45042

Quote:
I ain't no physicist but i never heard about an experiment in which they fired a load of particles "just like that" to some location right through earth :)

NATO did experiments on this in the late 1970's, trying to use sea water as a detector from a nukesub deep in the ocean. In paricular it is one of the isotopes of Chlorine in the salt that would give off light when its nucleus captures a neutrino. The fact that the atom is ionised makes no difference to the nuclear physics, of course.

It was all very nasty and not "pure" science. They were looking for possibilities of a one-way communication system to tell the sub when to surface for radio comms, or more worryingly I bet they were also wanting to be able to send a message saying "push your button now". They dropped the experiments as not being practical due to the neutrino flux from the sub's power plant (or if you are a conspiracy theorist it was a total success so they lied to fool the Soviets). My guess is that there would also be some flux from the plutonium in the warheads (used as a fuse for the fusion bomb) as it turns into Americium.

Of course NATO were only interested in seeing a signal, not trying to identify what flavour the neutrinos were on arrival.

~~gravywavy

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