Large Hadron Collider LHC Exhibition Tour

[@Saxie81]

We should send Dave to Cern. He would be like a kid in a candy store.

[@_MarosMacko]

Who wouldn't? ;)

[@powder-phun949]

Wouldn't every one of us watching his videos?

[@lonetallsassy]

Did that!

[@powder-phun949]

HOW? I HAVE TO KNOW!

[@lonetallsassy]

Open weekend. Free tickets online... Millions of site refreshes. Got in by the skin of my teeth. Best day of my life... I live near to CERN, and visit the museum often. In fact I visited before the LHC was built. That's what got me into Sub atomic particle physics.

[@electronicsNmore]

Excellent exhibit! You're not letting that leg stop you.

[@aeroscience9834]

I want to see Dave do a teardown of the real LHC. "Don't turn it on, take it apart!"

[@alextrofimov7947]

Dave I never get tired of being amazed of broadness of your interests.

[@HampusSandberg]

Currently doing my master thesis in EE at CERN and like you say Dave, the electronics is really impressing! The LHCb VELO in the thumbnail is a nice example out of many electronic projects they have here.

[@KnaufL]

Even the sensor uses I2C,you can see it on the bottom right part of the screen at about 6:35

[@Mrfrankism]

This literally made my day 😂😂😂👍👍

[@Photonface]

We have found our king.

[@Keith_Ward]

"How do you know he's the king?" ;-)

[@Peter_S_]

It's about the absolute easiest low pin count interface to implement in silicon and all you need to do in these detectors is configure the channel front ends so why would you use anything else? IEEE-488 went the way of the Dodo a long long time ago. You won't find a single smartphone, tablet, laptop, or desktop without I2C, and just about every single "smart" product on the planet also contains I2C.

[@Roxor128]

If you do take Dave's advice and visit while on holiday, expect to use up a whole day. Museums are massive time-sinks. Every time I visited one when I went to Europe, I either used up the whole day and left satisfied after seeing most of what was available, or only saw a fraction of what was available before running out of time.

[@AdityaMehendale]

One of the scientists working at LHC-Atlas had put up a meme with a crown-picture on their lab-door reading "Keep calm and Baryon" - I laughed so hard, tears rolled to unexpected places.

[@edgeeffect]

That accelerating cavity looks like some kind of steampunk fantasy object... love it.

[@remibeauvais743]

Thanks for the virtual visit! Greeting from Geneva!

[@frankderks1150]

At 4:34 in the video where Dave says "I don't know what that is" you can see a special kind of detector.When a particle goes through this material a flash of visible light is visible at the end if the rod.

[@ITOinfoo]

*Спасибо за видео!*

[@AlbinoTigerBarb]

Cool! I'm from Hong Kong and I've seen this exhibition for two times, once in Hong Kong and once in Sydney! I still miss those components of the particle accelerator so much! I hope I can visit the exhibition again!

[@Darknecros7]

You definitely should go visit the LHC someday. I think it's the most amazing piece of technology at this point in time, especially with how advanced the detectors as well as the whole CERN computing grid that processes all of that information coming from those detectors. Even more so with the increased luminosities they are running at. Can't wait to see how much more it will increase when they make the upgrade to the HL-LHC in a few years.

[@RobTaylor-HiTech]

Awesome! Those focusing magnet segments are so cool. My major was physics so I do get both the quantum and ee sides of this. Wish I could see it in person, you lucky dog!

[@Bodragon]

Great Video Dave and you even say "aitch"! (as in "El-Aitch-See" [LHC]). WooHOO !!! Music to my ears. Go Dave !!

[@simonrichards150]

I saw this exhibit at the Hong Kong science museum back in April! Fascinating, Good stuff :D

[@HowToGuys]

That's awesome !

[@stevetobias4890]

Awesome, very cool indeed. It's amazing how they came to put this together and the experiments that lead up to the first prototype being manufactured. How this all works is really cool and many great minds have advanced us a long way as a result. It just goes to show what can be achieved when countries work together instead of fighting with each other.

[@afitzy]

I went to CERN back in December 2015. It was like being in Disneyland for geeks. I loved it.

[@johnrogers4983]

Really cool! Thanks Dave

[@tomp2008]

thanks for filming that dave

[@redtails]

Dude, go visit the LHC yourself. Use your youtube status and mention there's a hundred thousand teenagers watching your channel that are eager to get into science if they get a little bit of push. They'll give you days of private tours.

[@richhourigan9501]

I agree

[@jamesgrimwood1285]

Don't turn it on... take it apart!

[@leonkernan]

They should post in a part from it for mailbag

[@EEVblog]

Sure, I'll just drop my hat and travel the 60+ hours it takes to get there and back, the video will be up tomorrow.

[@redtails]

EEVblog No one expects it tomorrow. Something like that can be planned ahead. There are ought to be PhD students and/or postdocs working at CERN viewing your videos or reading your forum.

[@Leonelf0]

Did you see the I2C testpads on the VELO module? SDA/SCL were on there. Wonder for what... EDIT: www.kip.uni-heidelberg.de/lhcb/ They use custom chips on there (Programmable analog or binary pipelined readout chip). They are programmable via I2C.

[@MarianKeller]

And here's the Datasheet for this chip: www.kip.uni-heidelberg.de/lhcb/Publications/BeetleRefMan_v1_3.pdf I still don't quite get what it does, some kind of analog front-end for pulse detection?

[@Leonelf0]

Marian Keller seems so. You can program some sort of analog processing pipeline, probably a bit of filtering, amplification etc.

[@timmgiles]

Thanks Dave - that was a nice surprise pop up on my phone! I doubt it will ever find its way to the north of Sweden. It was interesting to read the 'written' comments on the yellow cards. The Time of Flight module states it is built from mostly what we would find at our local hardware store! Window glass and pylon fishing line. Perhaps it is time for you to do some reverse engineering and get building a home particle detector !!??

[@stationplaza4631]

This is a very cool video! If there is ever an exhibition on how fusion reactors work, I do hope they let Dave loose in one.

[@0xbenedikt]

Haha I was on an internship there. Writing software and getting showed around. It was awesome!

[@xxTrumpetBoyxx]

This is so cool thanks for posting! There's a class at my university about particle accelerators and the LHC I hope to take soon.

[@electgpl]

Excelent! Regards from Argentina

[@mikeissweet]

I've been very curious to see what the detectors look like. thanks for sharing!

[@morksbeanbag]

Thanks for doing this video, it looks like a seriously impressive exhibit. Those VELO modules are just beautiful, whomever did the layout for those boards didn't go to the same school as those at Esinomed :)

[@JGunlimited]

I'll forever read the company's name as Demonise thanks to apt KZbin comments

Oh wow, I couldn't imagine how those sensors look or how big they were. Surprisingly small, actually, but man, I share your enthusiasm. Awesome!

[@jackwhite3820]

Well ... what you've seen here is one little part, of one slice, of one specific detector. The detectors in the LHC tunnel are composed of several sheets and layers of those pieces of detectors. Forming blocks surrounding the central region and blocks around that and blocks forming the end caps, all full of those slices of silicon with it's electronics attached. Those detectors all in all are easily as big as a small building.

[@pauldavis2108]

The most authentic part of that exhibit was the mock hallway at the end. That is exactly how CERN looks. Also I broke LHCb's velo once. Just knocked a connector loose but they were pissed.

[@farismitri]

Being fortunate enough to visit the LHC back in 2009, I appreciate an exhibit like this! Might be my excuse to come see a toilet bowl swirl the other way ;)

[@boggisthecat]

Different style of toilet arrangement down under. Not much water in the pan, so no actual swirl. Maybe bring a North American style toilet? ;)

[@jaiden9898]

That's a myth.

[@farismitri]

+jaiden9898 was definitely just kidding about the bowl bit :) Just never been to Australia

[@MaxKoschuh]

I would love to see this exhibition.

[@mark-]

Very Interesting! I might fly from Adelaide next weekend to see this, I alway wondered how these detectors worked...

[@kevingordon669]

so about near 5:40 we see a million cameras pointed at a single dot? WTF is this crazy bit of tech? Dave, thanks for the video!

[@asfand6904]

It looks like an art exhibit amazing stuff

[@Tom5TomEntertainment]

I so wish I could go see that!

[@UmbreWolf]

if im not mistaken, that first piece is part of the LEAP before it became the LHC

[@cognetic]

That was AMAZING!!!

[@ridonculous8374]

Dave, would you consider using camera gimbal? I have motion sickness when watching shaky video 😓

[@darrenjacobson7456]

Dave Jones, breaking and entering for KZbin vids! Hehe ^-^

[@caddyguy5369]

Well worth it in this case. :-)

[@nftmaster2050]

Teardown, Teardown!

[@cr0nosphere]

are these full size?

[@Levent_Ergun]

also for anyone interested, Particle Fever is a great documentation.

[@daanstam6697]

my school visits the cern every year sometimes they get to go in it

[@PiezPiedPy]

Cheers Dave ;)

[@ronme68]

This is our particle accelerator. Next year we are going build one to accelerate a grapefruit.

[@kevingordon669]

I've never paused a video like this one! 2016 yup, just now

[@N3KO_79]

4:03 what is that? :O

[@jtveg]

Thanks for that. ☺

[@rot_studios]

I'd sell my soul to see that exhibit :O

[@Sixta16]

Amazing stuff

[@johnsenchak4169]

What no 1.81 jig-a-watt flux capacitor ?

[@robh1908]

I use to have an accelerating cavity too. But then I got it pulled.

[@mmmhorsesteaks]

they have some giant brass balls over at the lhc!

[@robertmartin1116]

Dave I don't suppose you saw a flux capacitor on display at the Maker Faire? :p

[@rattlehead999]

if that magnet from 1982 was pulled from an archive, I wonder what they can pull out from a hangar.

[@forrestaddy9644]

No, Dave, you can NOT tear it up! Dazzling stuff like that comes near here from time to time but I never seem to get out to look at it. Dumb me.

[@JimGriffOne]

00:16 - I don't know what it is but I want one. 02:09 - Looks like a klystron tube.

[@muh1h1]

When i started watching i was like "hm, this looks like 60FPS, but not quite..." Looked in the bottom right and sure enough, 50FPS :D I'm getting pretty good at this! :D

[@userPrehistoricman]

I get a good feeling when I wake up and guess the time right. I've done it to within two minutes before.

[@oriole8789]

I hear claims that some people can't tell the difference between 30 and 60fps but I don't buy it to be honest. Wrong test conditions etc. As an experiment I tried gaming at 160fps on a Sony FW900 CRT (960x540 res I think was the max at that refresh rate haha), and after playing for a while, I could even tell the difference between 150 and 160. Playing at 60fps afterwards was the most unsmooth and choppy experience ever. There is probably merit to playing video at ~200fps in some far future, especially as VR becomes common and resolution catches up. The wider the field of view the more framerate will matter for a "real" experience. By then, hopefully HDR will be common and pixel transition times will be greatly reduced. :D Lots of cool stuff to look forward to~

[@oriole8789]

Oh, as a point of interest (if there is any haha)... for video to appear "smooth", the shutter speed on video cameras has to be the double and reciprocal of the frame rate (this translates to 180 degree shutter from the film camera world). So at 30fps, the recommended shutter speed is 1/60th of a second, at 24fps it's 1/48th of a second, etc. Basically this rule gives you reasonably smooth looking video during pans by creating just the right amount of motion blur. If you were to use a very high shutter speed (little/no motion blur), the video would look very jerky/stuttery even at 60fps (which is what happens with 60fps phone videos). But if you shoot and play video at 200fps, you could go to 1/400th of a second without problems. What that means, is that when you pause a video at any point - each frame would be very clear - no blur. And yet, pans would still look smooth because you're observing that rule. Great for documentaries and videos like this. As a comparision, try playing any modern film that's shot at 24fps and pausing it during an action scene. It will be nearly impossible to pause at the right time without motion blur. But, higher shutter speeds require more sensitive sensors (or much more lighting) since the number of photons entering the sensor per frame is inherently linked to the shutter speed. Our universe is all about compromises. :P

[@muh1h1]

whatlions Very well said! You seam to be an expert for filmography (is that even a word in the english language?). For me everything that is >45 fps is reasonably smooth, playable framerate for me personally. However i can defenitly tell the difference between 50 and 60 FPS. I couldn't tell the difference between 150 and 160 though.

[@km5405]

cern is the one of the great scientific and technological accomplishments of man and best off all its a scientific endeavour and not a national one. Very inspirational!

[@tag_of_frank]

Maybe it will be if it ever brings us fruits that a non quantum physicist can appreciate

[@km5405]

While the higgs boson hasn't got a everyday use, a lot of the technology developed by and for the LHC project has already generated very usefull spinoffs, superconducting MRI magnets is one example. A lot of the benefits of this kind of research come later when the technology is taken up by entrepeneurs and used to enrich our daily life - the same happened with space shuttle technology.

[@tag_of_frank]

Kevin Miedema I dunno. Better magnets? Better magnets will be developed regardless if this collider existed or not. Dont get me wrong I love the collider.

[@km5405]

eventually they would I guess ... its a real problem to find very relatable things in every day life to explain to people why we should invest in such a project. As the people who run the project said its actually a pretty good investment ;and billions of dollars are spent in vain on things which are much less important or basically a waste of money.

[@tag_of_frank]

Kevin Miedema I guess understanding quantum physics might help us with future technologies.... But It might be better to put that money into other more useful tech and wait for tech to advance to make the colliders cheaper. But then again, theoretical physicists need new information so they have something to do all day.

[@rationalmartian]

Was waiting for you to get the screwy out. "Don't turn it on! Take it APART!"

[@mrlithium69]

So cool!

[@dennissmithjr.5370]

WOW, using your own words. WHAT A BOBBIE DAZZLER!!!!!

[@milamiglia2437]

It's actually fairly simple in general. Most of it is magnetic coils which you can think of as electric motors pushing the particles along. And then the detectors which respond to the billiard ball like collision event. Many sheets of detectors form a 3D dot plot where you can see the path of the many particles and from their chosen paths you can know their nature. It's a fairly simple premise and also quite unintelligent to have such devotion to a large machine as an excuse to not do any actual thinking. Ball lightning for instance is right there for the taking.

[@gerff01]

I would love to go, but I am a few thousand miles away. Would like even more to go to CERN itself, but this would be cool as well.

[@nuwanwijayalath6894]

very impressive.

[@KlausKaiserDB3TK]

In case you wonder what these cavities do: en.wikipedia.org/wiki/Superconducting_radio_frequency home.cern/about/engineering/radiofrequency-cavities

[@savneetsinghrairai6823]

The copper wire runs along the tunnel in parallel...instead winding along the core...it's the particles accelerator...bothpoles runs along tube so called bi polar.....also featured in terminator 3...

[@fabiopinciroli4962]

If you're interested I can explain how the Alice time of flight detector works, we have three of them at my school.

[@mondeo984]

Use a gimball next time

[@EEVblog]

Learn to not complain about moving video so much.

[@mondeo984]

EEVblog so much? It's the first time Dave

[@maxel3g3nd]

A gimball is not exactly free.

[@Q_Branch]

I'd love another look around CERN, this time without pissing them off by turning the job down. :)

[@audiocrush]

They definitely should invite him to cern... would make some very awesome vids I think.

[@martijnoudeophuis6946]

How did you get in there?

[@richhourigan9501]

By extremely legal not at all breaking and entering means

[@theLuigiFan0007Productions]

Wait... did he just say sonar sphere? That reminds me of something I'v heard before, and it's not deja vu. Could that be the product he discussed a long time ago that had issues with rubber bands swelling and blocking sensors?

[@EEVblog]

Same company, different product, that was a towed array seismic sensor cable.

[@theLuigiFan0007Productions]

EEVblog Ah I see. Interesting,

[@spacepirateivynova]

If you want to learn the physics about how these parts all work, I'd be happy to let you pick my brain on that. Just seeing this stuff makes me want to go back to making my own (albeit quite a bit smaller) accelerator experiment.

[@SoCalFreelance]

They look like they could be components from the USS Enterprise (NCC-1701)

[@Niv73]

you should get dibs on the Large Hadron Collider for a take down when they retire it

[@tzisorey]

Do they have that group photo of all the LHC engineers, where one of the engineers looks like Gordon Freeman? Y'know... for reasons?

[@tzisorey]

Hey Dave, Can you do a video on the time taken to propagate a magnetic field, and the applications (like particle acceleration) where you'd need to be able to calculate and plan for that delay? Or is that a bit far out of your field?

[@JohannSwart_JWS]

You do know this is also the source nowadays of Kicad. Bet some of those impressive electronics were produced using it...

[@fohdeesha]

amazing

[@lonetallsassy]

I have visited CERN when it was offline for upgrades. I was down there with ATLAS and CMS. I saw nearly everything. The most amusing thing that hits you? Millions and millions of white cable ties 'inside' the detectors... Luckily, I only live about one hour away. So if the black hole goes off, I'll be the first to know...

[@SeanBZA]

Detectors are simple, a photodiode and amplifier, just like any other avalanche detector. Just has to work in a vacuum and when cryofrozen. No tin there, just 60/40 lead so it does not have any tin pest. Special order parts as well to have them made with no tin coat at all, Cheapest part would be the actual sensor and board, the expensive part is the certification and testing, they are exposed to stuff that makes it look like an easy stroll putting it in a live fission reactor core. I would guess similar engineering was used ( and likely reused from CERN) in designing Juno's electronics to survive in the similar radiation hazard of jupiter, which probably has energies equal to that at CERN, just not as controlled.

[@redtails]

you mean you HOPE they used leaded tin. they sure didn't on a lot of nasa gear and even current satellites

[@jackwhite3820]

What do you mean no tin? 60/40 is 60% tin and 40% lead. Or did you mean 'no lead-free solder'?

[@noanoxan]

This lol. I'll guarantee they didn't use lead-free solder though. Lead-free can't take the temp cycles like sn67 can, which is why it's used in space.

[@jackwhite3820]

+moo. That's why I wrote "*no* lead-free solder". Or am I misinterpreting the "lol"?

[@frankderks1150]

Just one fundamental flaw in these experiments :Particles without charge don't get detected.

[@PinBallReviewerRepairs]

Aaawww but I am in the states. Lucky you have that cool stuff. :)

[@anthonycleary11]

As a high-level quadriplegic the chances of me ever getting to the Powerhouse Museum are not very bright. I hope the governing body at the Powerhouse Museum do a interactive tour with a device like the oculus rift.

[@michaelluftenegger7618]

In europe the movie is titled "Einstein Junior". We know it, but it's not that popular over here. EMC

[@gglovato]

kind of hard to go to the powershouse when it's on the opposite part of the planet....

[@TomStorey96]

That's what planes and holidays were invented for. :-)

[@wormytom]

Is it relevant that I spent the afternoon taking the bubbles out of beer?

[@CatNolara]

Man, I wish I wouldn't live on the opposite side of the earth... on the other hand, Geneva isn't all that far away. I should visite it some time :)

[@AdrianTechWizard]

Cool, those rooms are where theoretical physists come to work in CERN... They never play with the equipment, they only talk and exchange ideas but talking is 100% better than E-mail.

[@contemporiser]

Patel, i think I know that name from the Manhattan Project, relatives probably.

[@EscapeMCP]

Indeed. Just as Dave is Indiania's nephew.

[@contemporiser]

People descended from India make like 10% of the silicon valley personel.

[@Peter_S_]

In my decades of Silicon Valley I have seen Indian people in two primary places, (1) deep in the most respected labs doing the most intense research, and (2) in boardrooms and serving a C level corporate officers. Not so much representation in the middle management and paper pushing roles. Nerds everywhere seem to gravitate to positions involving complexity and problem solving.

[@GegoXaren]

"Large Hardon Collider" -- Richard Dawkins -- BBC

[@Hiltibold]

;) images.encyclopediadramatica.se/d/db/Large_hardon_collider.jpg

[@Leonelf0]

How's Dawkins involed in this?

[@GegoXaren]

+Leonelf He made that typo in one of his books...

[@Leonelf0]

***** Lol. Only saw the BBC one by searching google. thanks

[@awesomusmaximus3766]

Awesomus Maximus factor 9

[@RobertKohut]

The "real" science fiction!!

[@pvc988]

1:15 And a celebration wine :)

[@scotshabalam2432]

WOW YOUNG EINSTEIN REFERENCE! I try to tell my friends that Young Einstein is a movie but they don't believe it exists, even that Nostalgia Critic Doug guy doesn't want to deal with that movie.

[@Roxor128]

What? Seriously? They're nuts. I remember renting it on VHS multiple times when I was a kid.

[@mitropoulosilias]

that's what i want!!