https://history.aip.org/history/exhibits/lawrence/first.htm>
Not exactly chip size but not a giant, either. Built in 1931...
That is a remarkable photograph.
They were building particle accelerators before they were certain they had particles!
As late as 1920, establishment physicists were having heated arguments about the existence - or non-existence - of the proton.
And the existence of the neutron would not be confirmed until 1932.
By the way - I love your “Fourth Estate” tag line.
If you wrote that, congratulations for being very clever.
The magnets for that are much larger.