If you want to see electronics hardware customized for the collider at CERN, use this link
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The Large Hadron Collider uses big diodes in color photos. Many images of September 2019 status report on magnets and wiring cleanliness. The .pdf file says, "High voltage specialists (EN-EL and Contractors) will be fully available during the period with a single source to minimize downtime."
See a billion dollars of shiny lab electronics and vacuum kit. Many status reports are up to date for your reading about electromagnetic accelerators.
On a sunny day (Thu, 24 Oct 2019 19:50:19 -0700 (PDT)) it happened snipped-for-privacy@gmail.com wrote in :
It does not do anything for anybody , is just an industrial job creation project pollutes the environment by using insane amounts of power.
My cure: cut budget if nothing useful comes out in a year. And with useful I do not mean a silly piece of paper with equations that claim to be the TOE (Theory Of Everything).
Only thing useful that ever came from CERN was a hobby project called 'html'.
I want replicator warp drive tractor beam free clean energy better weapon, death star comes to mind (that is why all the investment started, make a better weapon than the A-bomb H-bomb). . OTOH those tunnels probably make good bomb shelters.
It did find the Higgs boson, and seems to be picking out pentaquarks.
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Jan doesn't know about this kind of stuff, and dismisses what he can't be bothered to try to understand. It's silly, but we've got a few similar people posting here.
The LHC superconducting bending magnets are arranged in series strings of 154 powered by a single 13kA power supply. In the event of a quench of one of the magnets, the diodes divert the current around it while the whole string is ramped down.
They are bespoke 75mm diameter diffusion-type diodes. They are clamped between two heat sinks and are kept at liquid helium temperature.
Thanks, Jeroen. Any idea what their forward voltage drop is, during the 13kA quenching event? Are the wire connections between bending magnets, and return path, also superconducting?
My wife brings home Physics Today every month (which is bizarre) and every now and then some physicist talks about his or her candidate for the Theory of Something.
They seem to spend most of their efforts trying to prove that the the theor y is coherent. Only when they can persuade their colleagues that their theo ry is self-consistent is anybody prepared to start scheduling experiments o n expensive hardware to find out of theory explains anything that happens i n the real world world (to the extent that the insides of the Large Hadron Collider,or the remoter parts of the universe are parts of the real world) .
The forward voltage during a quench is of the order of 6V, dropping rapidly as the diode heats up.
The interconnections between the magnets are also super- conducting. They are soldered with a SnAg alloy. A failure in one of those is what set us back a year in 2009.
Well his wish list did not sound all bad, though his cry "we're fine as we are in our caves" was clearly not that well thought (such a cry is untypical of him AFAIK).
OTOH those at CERN have yet to locate the best DSP MCAs for gamma spectrometry, they have been on the market for years :-).
I had an exchange with the guys working with these things. They say it's similar to the Dynex DS2101SY for which they gave me a data sheet. I can't seem to find it on Dynex's site, but I have a copy here: (97kB).
So, the transistor was discovered in 1947, and the first useful commerial items appeared 1953
... the first useful equations (Shockley's contributioin) were available about 1950 for what we now call a transistor (not the point-contact type that was discovered, but a 'normal' BJT).
What you call a 'cure', I'd call a 'disease'. At least you might wait for four quarters, some businesses don't.
Other long-term developments: Democritus' atomic theory explaining Dalton's work with gases, and Lilianfeld's 1925 description of the FET that came about 1960...
On a sunny day (Fri, 25 Oct 2019 19:10:55 -0700 (PDT)) it happened whit3rd wrote in :
LOL I have written back in sci.phisicks when it was still on topic: "If you cannot do it with those small particles on the table top, then you cannot do it in a machine the size of the universe."
A few years later a table top accelerator was designed that could do more than CERN at that time.
It is a folly, much like RF radio transmitters made with rotating multi-pole generators... It is a keep busy project for kids from school who are good at reciting Einstein and mathematicians good in dividing by zero and renormalisation. No reality. The nuculear bomba was found on the kitchen table top Madame Curie.. Read history.
Anytime such a thing happens stupidity goes BIG. How I know, I worked at and designed part of an accelerator, small part but never the less. Great place to work, and play, we could use some percentage of our time for own projects.
A family member was in command there before, he told me as a kid: 'that never leads to anything', he left and went into business... I did not believe him then, but I do now.
Anyway the pay was shit, I needed more, got a better offer, and left, then later started my own business, history repeated itself? After a few years I did read in the paper the whole place there got contaminated... PrOBabLy ALwaYs wAS
Mamathegissions usually claim everything, but in reality most things are discovered by accident or pure insight of the neural net Now we see a movement back to AI and those are even used to create new medicines. I predict some AI will discover math, and there you are again, full circle.
There are more examples of go big no result projects: ITER .. NASA ;-) LOL US come to think of it... grin :-)
Jan needs to read history more carefully. Pierre and Marie Curie processed a ton of pitchblende ore (which they'd been given for free by the Austrian government) before they got enough radium and polonium to run experiments o n.
They did get some help, so more than one kitchen table was involved
The nuclear bomb came up quite a lot later, after both the Curies were dead . Maria didn't die until 1934, and while "The German chemist Ida Noddack no tably suggested in print in 1934 that instead of creating a new, heavier el ement 93, that 'it is conceivable that the (uranium) nucleus breaks up into several large fragments.' but Noddack's conclusion was not pursued at the time."
Jan is into big stupidity.
ut never the less.
or own projects.
The same kind of brain failure has set in with you too.
n later started my own business,
minated...
But not enough to matter.
the neural net. Now we see a movement back to AI and those are even used to create new medicines.
e.
Jan does spend a lot of time admiring his own insights.
Nobody else is going to bother.
L
No results that Jan can understand, or even comprehend.
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