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CERN gears up to ship antimatter across Europe

arstechnica.com

171–180 of 188 posts

Re: CERN gears up to ship antimatter across Europe

#171
post #131

Earlier quoted context omitted.

If you want to visit Atlas (control room) or CERN’s first accelerator (a synchrocyclotron) just show up in the morning when the visitor center opens. The tour guides are often passionate scientists. The museum is worth visiting, you’ll get to see the first www server (Tim-Berner Lee’s nextcube). The live shows are well put together. And everything is pretty much free of charge. The only thing I can think of that has…

That is great news. The last time I checked, there was a long waitlist and needed to book online (maybe COVID-related?). Appreciate you sharing this story.

This link might interest you: https://cms.cern/interact-with-cms/on-site-visits

If the timing works out for you, you'll be able to visit both, the visitor center and CMS!

Re: CERN gears up to ship antimatter across Europe

#172

Earlier quoted context omitted.

Can you visit CMS? https://en.wikipedia.org/wiki/Compact_Muon_Solenoid

Per https://cms.cern/interact-with-cms/on-site-visits , you can visit CMS if you book ~1 week out.

Thank you!

Re: CERN gears up to ship antimatter across Europe

#173
post #63

Earlier quoted context omitted.

I work for the control group at another accelerator, so we were visiting and meeting their control guys. Super friendly people all of them, they treated us like kings... and their control centre is bigger than our whole facility xD

So they allowed you to know that you are in the control group? Doesn't that introduce bias ;)

Sorry, I don't understand your comment :/

Re: CERN gears up to ship antimatter across Europe

#174
post #98

> There's a facility being built in Düsseldorf, Germany ... [and shipping] appears we are just a liquid helium supply away from getting it to work That "just" is not just a "just"! As far as I understand, given the low reserves of helium we have, using a largish quantity for an experiment must be a political decision as much as it has to be a technical one.

We vent the vast majority of helium by not separating it from natural gas, I still think the "shortage" of helium is still way overblown. We shouldn't be wasting it, but I don't believe the doom and gloom about helium. Basically every gas well has helium, and we aren't going to run out of gas wells anytime soon, it just costs a little more to extract because its a little bit lower percentage than the ideal wells.

Extraction is the challenge...

The US has subsidized Helium via this mindset for a long time.

Where I get confused is, after all these years, surely others could make a bigger effort? (unless the nature of US reserves put us in a unique position)

Re: CERN gears up to ship antimatter across Europe

#175

Earlier quoted context omitted.

The bullet should consist of several parts. Maybe it's more rocket than a bullet. 1. Part that makes it move from the gun to the target. May be ordinary powder or reactive engine. 2. Part that creates an energy when bullet hits the target. That's where antimatter would be useful. 3. Part that converts energy to damage. For example compressed gas which gets very hot, expands and pushes shrapnel to hit things around wi…

That would be a "shell" or warhead rather than a bullet. Bullets are generally inert bits of metal propelled from a barrel. Shells are are filled with explosives to detonate at some point once far away from the launching barrel.

Since you've already been pedantic here, I'll note that a 'shell' can also consist of pellets fired from a shotgun round, which are still 'inert bits of metal propelled from a barrel' but for at least a traditional round (e.x. 'buckshot') do not detonate later...

Re: CERN gears up to ship antimatter across Europe

#176
post #131

Earlier quoted context omitted.

That is great news. The last time I checked, there was a long waitlist and needed to book online (maybe COVID-related?). Appreciate you sharing this story.

This link might interest you: https://cms.cern/interact-with-cms/on-site-visits If the timing works out for you, you'll be able to visit both, the visitor center and CMS!

Definitely will check it out. Thanks on a subatomic scale!

Re: CERN gears up to ship antimatter across Europe

#177

Earlier quoted context omitted.

It's just too expensive. I think a quadrillion per gram. You can bribe the whole population with a million dollars or if you prefer a more classic method just give the enemy president a trillion dollars.

You wouldn't need anything near a gram. It isn't used for its explosive power but to create particles to increase the efficiency of the surrounding nuclear reaction, not actually contribute any explosive force on its own.

Do you have a link that explais that? Asking for a friend.

Re: CERN gears up to ship antimatter across Europe

#178

Earlier quoted context omitted.

So they allowed you to know that you are in the control group? Doesn't that introduce bias ;)

Sorry, I don't understand your comment :/

He was referring that in many experiments (especially in medical/biological) you usually have a control group, e.g. the group that is being given a placebo.

Took me a moment to understand it as well :)

Re: CERN gears up to ship antimatter across Europe

#179
post #17

Last week I had the chance to visit CERN's Antimatter Factory, and let me tell you I was feeling like a child on Christmas Day. The ridiculously advanced technology required to produce only a few picograms of antimatter is truly impressive. That they are considering sending it hundreds of km away is mind blowing.

I designed some of the kit in that building! (Specifically for the alpha G experiment) Super proud of it.

That is super cool, you should be proud. I took plenty of pictures of all the machines xD

Re: CERN gears up to ship antimatter across Europe

#180

Earlier quoted context omitted.

Sorry, I don't understand your comment :/

He was referring that in many experiments (especially in medical/biological) you usually have a control group, e.g. the group that is being given a placebo. Took me a moment to understand it as well :)

Ah shit, you are right. I worked at a medical research center aeons ago so I should have known, but I am still dizzy from the jet lag xD
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