Inside ATLAS at the Large Hadron Collider - Sixty Symbols

[@coldsoup49]

Love his enthusiasm!

[@IronWarrior4Ever]

+coldsoup49 The result of loving what you do for a living. We all should pursue our passions, it's the secret to a happy life.

[@RadagonTheRed]

This is mind-bendingly interesting. This device represents the pinnacle of human scientific development, not just in the field of physics, but in our fundamental understanding of the very fabric of the universe. I just wish I understood it.

[@toxbreathexin]

So, I'm new here, but I think this has officially become my favourite channel on KZbin.

[@theswayzeexpress1]

Brady is awesome at asking clarifying questions!

[@Edge0fPain]

This is the best channel on KZbin. Period. But, you can't measure how good something is :(

[@Naddan9]

It's amazing, I just can't comprehend how complex the construction is.

[@TobiBaronski]

Is there any footage on this channel or elsewhere of the thing actually running? Not the beam itself, of course, but just the machine humming and the data being transmitted and etc.? Like surveillance footage or some such? Or do video cams somehow get fcked up by all that collateral from the collisions?

[@AluminumStudios]

Show us the beam dump please! I've never seen any coverage of it, but it's fascinating.

[@Hufekf32]

Seeing this guy wear a helmet standing in front of all that makes me so happy. It looks like the future and I'm here to experience it! Just imagine what we'll be doing in 15 years.

[@sixtysymbols]

we've got a video coming on that!!!

[@JeremyRemele]

That mans enthusiasm restores my faith in humanity. #Science #ToBoldlyGo

[@exibitions]

Every minute there are 24 hours of video uploaded to youtube, on average. No one will ever see every video, it is impossible. But I agree, Brady's videos and channels are amazing.

[@01rai01]

ohh man wish it went for longer, Great job Brady

[@mumubear123]

Unfortunately no picture does this monstrosity justice. I felt like a little child when I saw it, just starring at it in total awe.

[@Pommy381125]

How do the two opposing beams get brought together to collide? If the beams are speeding up in different directions when are the "points" switched to force the beams to collide and how? What makes the protons in the first place - what kind of atoms are the protons from?

[@Usul]

There are many videos on-line of the LHC "in action." Also, you can find real-time updates from CERN regarding the status of the beams, etc. CERN is incredibly open about how things work. I'm wondering what you'd expect to see.

[@DivingDeveloper]

The most informative video I've ever seen at the LHC, thanks! Just make sure that you don't leave Brady behind without a safety key!

[@Bptips]

i love all these CERN vids as i was there on a school trip not so long ago. although we didn't get to see the actual LHC or the detectors. but its still nice to think i have been what your looking at and showing people

[@gencofilmco]

Tweeted. His enthusiasm is wonderful. You've got a great job Brady, and do wonders with it.

[@MrKireek]

how do they isolate those protons? i'm asking this because for as far as i know protons are usually a particle in a complete atom right? so there would have to me electrons and neutrons involved aswell in those collisions right? can someone explain this?

[@insu_na]

There's really no point in that because even 10^11 protons are ridiculously few and carry extremly little energy, again most of the protons would miss the molecules that made up your replica. If I remember correctly they just slam it into a lead wall and collect some data off it. Funny fact to the ATLAS detector (and any other particle detector of that magnitude): Even the network cables around them are measured to the µm precise to reduce transfer times

[@yusukeshinyama]

Great tour!

[@RobKinneySouthpaw]

It'd be fun to put an apple or something at the location where they shoot the "beam dump" and see what happens to it.

[@yep2yel]

I'm an American teenager, but it's my absolute DREAM to work here :D

[@michaeldowney24]

big thanks to Brady for mentioning that the construction was "sped up".

[@RustyDustyCrusty]

only "slightly" :D

[@CorruptReaper]

I'm not sure if I understand your question but I'll try to answer anyways. The reason why they travel at nearly the speed of light is because of their weight, without any weight they could travel at the speed of light. As an object gets faster it also gains mass which works to slow it making it impossible to reach the speed of weight regardless of how little mass you have. The ones that hit however are broken into base particles that are scattered and (hopefully) observed.

[@sixtysymbols]

it was a small hutch for equipment while people go through some of the security stuff!!!

[@Android480]

Coming from the most recent video about the proposal of the new massive LHC, its almost sad to see just how optimistic physicists were that the LHC would find dark matter and confirm super symmetry. Like there wasn't a doubt in their minds, this was the machine to do it. I guess thats how science goes though, and I don't think anyone could make the claim that the LHC was a bad investment. Even without confirming these specific theories, the amount of knowledge and understanding this machine gave us is worth more than the price tag. Even more important, the amount of press and recognition the higgs and LHC brought into public view is something money can't buy. I wonder just how many thousands of students entered their PhD program just because of the LHC alone. So many kids were inspired by this thing, its a real beam of light. Its sort of like the Apollo program in that sense, it got people into science.

[@Barnekkid]

I can feel the excitement. It's the closest I'll ever get to it.

[@Dazzle-Delight]

I'm not smart enough for such science like this, and that's why is amazes me every time I think our species has created the means to do difficult and intricate experiments. Just wow!

[@sugnaangus]

Your videos ARE the best on all of KZbin!

[@DaithiDublin]

That was a really nice explanation of the collisions.

[@JRBendixen]

You should tell us more about the other experiments and detectors.

[@CorruptReaper]

The advantage of that is that you would have a much more narrow stream increasing likely hood for a collision because there would be virtually no area in which an atom could go past without hitting another one, like in an hour glass only allowing a few grains of sand through at a time. I asked specifically because I would assume there is a specific reason they chose a much larger chamber as opposed to a narrow chamber with a higher probability of collision

[@fritzheini9867]

very nice to come back to a time when the Higgs event was still under debate and being checked

[@CorruptReaper]

The comparison with the reader was just to mention I know the technology exists to create something (like a tube) on a small scale. I wasn't saying that the length of the LHC was too short (it's needed to increase the speed) and I'm not saying to remove sensors (you could pretty much keep them as they are) I am talking about the chamber in which they collide should be funnelled into a chamber that is only a few atoms big so that there is less volume in the chamber specifically.

[@IgorKaratayev]

These particle collision wall paints are beautiful.

[@MakoSidhe]

This is the kind of stuff that made me love science when I was little. :)

[@DoctaBeetz]

I can't thank you enough for these videos

[@VerbandFilmhistorie]

The security is in the LHC not for preventing all the technics--but also to prevent YOU against all this LHC ZOMBIERS crawling through this damned tunnel!"!!!!

[@kotzwell88]

I'm just in med school and this stuff is way over my head, but, man is it exciting. Striving to unlock the secrets of the universe... Are you not entertained?!

[@daymeinvines1699]

Kinda makes you giddy to see such a gorgeous machine.

[@superdau]

No, not as far as I know. It really is called "Large Hadron Collider", because it is that huge assembly of instruments. I don't know if there even is a distinction by size between hadrons, at least never heard of it.

[@PopeLando]

CERN's home video producers are a bit Route 1 when it comes to public domain music: The Planets, the Flight of the Bumblebee. Does it begin with Beethoven's Fifth and finish with the Ride of the Valkyries?

[@AlexChanNZ]

I've noticed the sixtysymbols course on iTunes U has got 6 videos last updated last year. Do you think it is possible for more to be uploaded onto it and it as very helpful resource, especially meaning you can view the videos any time.

[@burny6666]

i still don't understand why i love this channel so much...makes me wonder if i should go take a class in physics....

[@superdau]

You need the size because many of the particles generated pass through matter and only have a small chance of interacting. If you got only one sensor layer, if it passes through and did nothing, you lost it. So sensors are stacked. Then there is no single detector, which can detect every particle. They are very specific and different types are aranged in layers. you also need cables, structural support, temperature control, a many more things. And why would it be called LHC if it was small ;)

[@Usul]

There have been many been dump experiments at various detectors at other coliders. Two main roadblocks are 1) interest. 2) money. There actually are some experiments at the beam dumps, but more engineering tests and general theoretical work with beam control, etc. There may be more going on... but I am not aware.

[@bimblinghill]

Yup.. that's right. There's a calc on the CERN website (can't post a link, but I just searched for 'LHC+mosquito').

[@Usul]

Good question. Nearly all the running cost is getting the entire machine ready for collisions in the first place. The actual beams are not that expensive to produce. Keeping them zipping around the LHC is the hard part. Try cooling down _anything_ to 1.8 kelvin. Now, do it across 27 kilometers! The beam gets dumped all the time and basically produces a bunch of useless particles and heat.

[@martixy2]

Awesome! So there is hope for humanity yet... :) Sometimes you just gotta step back and look at the bigger picture. People need to be reminded of that from time to time.

[@Scraebler]

How many safety keys do they have? I assume there must be quite a number, to ensure that they always have enough for the staff (if every staff member carries one, that is).

[@HaokoTheDude]

And what all this comes down to is to find the number 42

[@ruadeil_zabelin]

Perhaps you could explain a bit more. In this video it's mentioned the higgs event maybe being detected, however in other recent videos on LHC they talk about higgs not been found yet and that there's quite a group of people there that suspect it doesn't actually exist. But if it does exist, the area in which it exists got a lot smaller over the year. Could you clear that up a little? What's the current status? Thanks

[@Usul]

There are a lot more bunches than just 2. They way they control where beams interact is at specified interaction points using magnets to steer them.

[@Jesusisyhwh]

And to think that a machine like this (but even more powerful) was planned to be built in Texas and they canceled the project. What a shame and what short sightedness. :(

[@Skandalos]

ah Gordon, weren't you supposed to be in the test chamber half an hour ago?

[@zachmiller9175]

wow, i live within 5 minutes of the tevatron but this is incredible

[@RedChicow]

I maybe have a silly question here. But I can't understand that if the protons can go around again, what stops them colliding somewhere else in the tube. Is it two tubes or one and how do they control direction of the protons?

[@Usul]

Great question. Once the beams have been around so many times, and been through all kinds of abuse, they start to go a little wonky. They dump them out at a minimum beam energy to prevent even the slightest bit of wonky-ness from developing... Which is the last thing you want in a beam. Basically, you dump it while it is still fully controllable, you don't wait for it to become a problem because you might have a microsecond or 10 before bad things happen.

[@2livecrew88]

great vids and explainations of the LHC

[@aikighost]

Is there any energy recovery from the proton dump at the end? Or is there not enough heat generated?

[@schizer]

How come there are no videos of the LHC in action? I can never seem to find any videos of the machine being switched on and detecting the collisions. Anybody knows where I can find them? And why issit so difficult?

[@mrnosy1]

You should make a video on the double slit experiment

[@LA6UOA]

Thank you!! Questions I have been wandering about for a long time ia answered here! How broad are the beam? How many collisions pr second? And bonus: Only 20 of 'LOADS' of protons are colliding! Again, THANK YOU!!

[@gdog48001]

Saw another large hadron collider video and was like uughhhh.. THEN i saw it was sixtysymbols! You guys really are the best

[@Strontius89]

I'm very skeptical of that. Could you provide some of the sources so I can read up on it?

[@nawedy]

I understand why you think that. But think about it this way: Those guys are experimenting at the frontiers of known physics. It's true that there aren't yet that many practical applications (although antimatter is an excellent candidate for efficient energy production!). But that doesn't mean that it doesn't have lots of practical applications, it's only that they haven't found them yet (bear in mind, they are only starting!).

[@constantinople999]

The clip where you show the helium tanks was on another video on periodic videos, when DID you go to the LHC and why have you been holding out on us for so long? ;)

[@nawedy]

Because they are attached to the building plus the container alone probably weights enough to counteract the difference between the density of He and air.

[@vkotis]

Awesome videos!!! Always looking forward to them, especially the LHC vids! That thing is just humungous!

[@bimblinghill]

Yeah, although it wasn't put politely, he kinda has a point. Much as I love what they're doing at the LHC, I think the ITER project is more important for our immediate future. It was delayed by several years due to budget shortfalls.

[@Snagabott]

Luminosity? A static target gets you only half the energy per collision, but if you can increase the number of collisions by a huge factor, why not install a small detector there?

[@Skeluz]

Could you mention something about the actual "investigations" of the collisions? I've heard that the amount of data generated is huge. Do they have 10,100,1000 people that look through all the data? Thanks.

[@tomtoonotavaiable]

Come over a nice idear. Why not pop pocorn in the beam dump area ?

[@fruitcake117]

Good call on naming that music used at that point of the video.

[@8DX]

Thanks for this.. don't know how I missed it. But thanks for CERN. Only thing it gives me worries about is that the last real news and interest push I've heard about ITER is years back. I'm wondering if these projects shouldn't be communicating, endorsing each other, or why we the public haven't heard about it.

[@nawedy]

Not really. A neutron is formed of three quarks, the Higgs boson is something entirely different. But energy is a form of mass (e=mc2) so when the protons (also formed by three quarks) collide, the energy is transformed into other particles that did not form part of the proton at all. That's how you get the Higgs, photons, muons and so on :)

[@thisrideisfree]

Your videos would really benefit if you had a wide angle lens!

[@jorritschulte]

could you do a video on the Majorana Fermion? seems really fascinating

[@Blazzedtrail]

Wheres a new video already!?!

[@TPRJones]

That bit about dumping the beam, it sounds like there are some missed opportunities there. They should set it up so that the beam can be dumped into a target area where they test the effects of the beam on various substances. Like, say, a meat-based replica of the human hand.

[@PaulGrahamHealth]

Great video . what is the source of the protons?

[@Snagabott]

Is there a detector at the beam dump? That would get fantastic luminosity...

[@richd506]

Did you get to see a collision while you were there?

[@jackwhitey2]

new particle discovered at CERN- talk about that next please

[@ccam042]

This is an amazing video! Thanks and keep posting!

[@Rulerofwax24]

When he said that the protons have the energy of a mosquito, that surprised me. I find that to be very very large. Was that just an exaggeration or do they really pump up THAT much energy? (I know it's a lot, but I didn't think that much)

[@namenloss730]

"They will never have the chance to be involved in a collision" in this context: sad in pretty much any other context; really good!!!

[@altosmusiclab2248]

how do they clean out all the little bits afterward?

[@roboosh]

can the dumped beam not be used some how. rather than just pissing it up a wall? what does it cost to fill an LHC beam?

[@SgtClueLs]

Does CERN offer any public tours?

[@Usul]

Great question. I know the answer, and the comment system at YT is not nearly big enough to explain it. Basically, they use magnets to control the beams. When they are ready for collisions they ramp down the magnets separating the beams. Also, it is highly important to prevent beam loss (it smashing in to the side of the pipes). There are a host of ways they try to avoid this. It gets complicated really fast.

[@Usul]

The record is something like 10-15 minutes (can't recall actual time). Work done at CERN, actually.

[@FirstSecondThoughts]

Because Imagination and human creativity is being celebrated every time a proton is smashed to oblivion. Human ingenuity is something absolutely worth celebrating in such a royal and lavish way. (On a side note that is more relatable. Particle accelerates around the world do research on Bio-physics. So they produce particles that can target cancer. The knowledge gained is enormous.)

[@Tonjevic]

What does it look like when they dump the beam at the place where it is dumped?

[@nessdude14]

If you doubt the applications of quantum mechanics and particle physics, think about this: The transistor only exists thanks to quantum mechanics. Transistors are in every piece of electronics you see. If it weren't for research in quantum mechanics, we'd still be using vacuum tubes in electronics, and your cell phone would be the size of a stereo.

[@KillaMarci]

How do they just "Take a couple of protons" and make them run around the beam? This thing is so complicated I have absolutely no clue how anyone could ever build something like that. This is mindblowing...

[@ruben307]

how much time do the protons "think" they are in this circle?

[@CorruptReaper]

That makes a lot more sense, thank you!