Physical understanding is a fragile asset. Most organizations destroy it by accident.
Essays, a sourced materials database, and design tools for ultra-high vacuum, written from the bench
Essays
A number is a claim
This site used to show outgassing values for 64 materials. It now shows 20. Here is why that is progress.
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Clean Has No Unit
Nine trades prepare surfaces for vacuum. No two of them measure the same thing. The unit has existed on paper since 2013. No vacuum handbook writes it on a purchase order.
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The Warhead Dividend
Helium-3 was born in warheads, spent on borders, and is now hoarded for qubits. A field note on the strangest supply chain in cryogenics, with four dated bets.
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The Banned Shelf
For a century, the vacuum tube could order any material it wanted. The shelf is closing now, and the frontier has just walked back in to place the largest order since radar.
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The Floor Under the Fab
The chip war is fought over things everyone can name. Under all of them sits one layer nobody does.
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The Names Nobody Cites
Two hundred and thirty-five actors on one map: the consolidation sits one layer below the headline names, the leverage one layer above.
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No Dashboard Pumps Faster
Nine bake stations on one screen. What it produces is a record of how a healthy pumpdown behaves, and an intuition the next operator can inherit.
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Tight Enough
Two brazed joints, the same certified leak rate, opposite void networks under the objective. What decides is whether the voids percolate.
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The Better Ceramic
What a material costs once it leaves the datasheet.
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The Arc
The one failure a tube, an accelerator, and a fusion magnet all share, and the craft that keeps it away.
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Everything Outgasses
A law that does not care whether you are building an X-ray tube, an accelerator, or a star.
Tools
Brazing Abacus
Pick two materials and a filler. See the expansion gap the joint carries on cooldown, which member goes outside, and the rules in force.