July 3rd, 2024

The legacy of Liverpool's forgotten synchrocyclotron

The University of Liverpool's synchrocyclotron, operational from 1954 to 1968, was a pioneering particle accelerator designed by James Chadwick. It advanced particle physics through intense particle beams and innovative design.

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The legacy of Liverpool's forgotten synchrocyclotron

The University of Liverpool's synchrocyclotron, operational from 1954 to 1968, was a significant particle accelerator that accelerated particles to relativistic speeds for experiments in particle and nuclear physics. Designed by James Chadwick, the machine paved the way for future accelerators by allowing researchers to extract intense particle beams for experiments. Despite its obscurity today, the synchrocyclotron played a crucial role in advancing our understanding of particle behavior. The construction of this accelerator in post-war Liverpool was a remarkable feat, with significant government funding allocated for its development. The machine's location beneath the Metropolitan Catholic Cathedral, partially buried for radiation shielding, symbolizes its historical importance. Although Chadwick did not directly use the synchrocyclotron due to his move to Cambridge, his contributions to establishing Liverpool as a center for nuclear research were invaluable. The synchrocyclotron's innovative design overcame the limitations of conventional cyclotrons by continuously adjusting the RF electric field to accelerate particles to near-light speeds. This technology marked a significant advancement in accelerator capabilities and contributed to groundbreaking discoveries in physics.

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By @bell-cot - 4 months
> “The country was still recovering from the war, so it was amazing that the government had prioritized building a particle accelerator in 1947 and 1948,” Houlden adds, pointing out an image of the Liverpool skyline at the time of the accelerator’s construction in 1951 that shows cranes in the city still repairing damage from German bombing.

IIR, close US/UK cooperation on nuclear research ended when WWII did, and the UK found itself recast as a junior bottle-washer. There likely was a whole lot of national pride behind that budgetary decision.

Edit - here's the history:

https://ukdefencejournal.org.uk/the-early-years-of-britains-...

By @Pixelbrick - 4 months
As a Scouser with an interest in physics I'm ashamed to have known nothing about this :(
By @adolph - 4 months
What a wonderfully composed article that balanced telling of the science involved within the social political and economic context (for this lay person at least). The transfer of technologies and academics further westward reminds me a bit of “How the Irish Saved Civilization’s” thesis regarding certain monasteries preservation of knowledge during the post-Roman period of Western Europe. A pity for Ireland that it wasn’t as able to capitalize on the role as the US after WWII.

https://en.wikipedia.org/wiki/How_the_Irish_Saved_Civilizati...

By @msephton - 4 months
Wild. I grew up in Liverpool and studied Comp Sci there in the mid-1990s, and remember one of the buildings named after Chadwick. But I had lost interested in physics after my A-level, so I can't remember if this was mentioned or if I knew about it.
By @PlasmonOwl - 3 months
Loads of shit in the basement in the chemistry department, physics dept. etc. There's quite a few lead sarcophagus that we've labelled no go ha.
By @slashdave - 4 months
There is a mistake in this article, which is honestly a bit shocking. CPT symmetry is still known to be conserved. The discovery at the time was the violation of CP symmetry.