leonarski_f
07c8b2ddd4
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_015CeEGgpKdfkCTJb3YNMJcu (cherry picked from commit f8d07397288137dd5e3a0e5c101f2036d51228bd)
61 lines
3.8 KiB
Markdown
61 lines
3.8 KiB
Markdown
# Naming
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The software is Swiss, and so are its names: both halves of the system are named after
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places in the Alps that are, in one way or another, about moving a *lot* of something up a
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steep mountain as efficiently as possible — usually by train. Throughput, in other words.
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| Part | Name | What it does |
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| --- | --- | --- |
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| Streaming / acquisition | **Jungfraujoch** | Receives detector data at high data rates, runs the FPGA/GPU pipeline, and streams images out for writing. |
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| Data processing | **Rugnux** | Crystallographic analysis of a stored dataset, or of a collection while it is written — indexing, integration, scaling and merging, and refinement of a given model (the [`rugnux`](RUGNUX.md) tool). |
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## Jungfraujoch
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The **Jungfraujoch** is a high mountain col in the Bernese Alps, the saddle (*Joch* is German
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for "yoke" or "col") between the peaks **Jungfrau** and **Mönch**, at 3,466 m. It is the site of
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the [High Altitude Research Station Jungfraujoch](https://www.hfsjg.ch/), whose long-running
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atmospheric measurements are **co-operated by the Paul Scherrer Institute** — the same institute
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that develops this software and the JUNGFRAU detector.
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The name is also a small piece of word-play. PSI's **JUNGFRAU** detector and DECTRIS's **EIGER**
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detector are both named after Bernese Alps peaks (the famous trio is *Eiger*, *Mönch*, *Jungfrau*).
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The Jungfraujoch — the pass *between* Jungfrau and Mönch — is where those two detector worlds meet.
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And it fits the theme of the whole project: the Jungfraujoch is reached by the **Jungfraubahn**,
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whose terminus is the **highest railway station in Europe** (3,454 m, the "Top of Europe"). It is
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the closest you can get to that summit in a genuinely *high-throughput* way — by train, moving
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crowds up the mountain — which is exactly what the streaming side of this software does with
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detector frames.
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**Pronunciation (German):** *Jungfraujoch* ≈ **YUNG-frow-yokh**.
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"Jung" as in *young*, "frau" rhymes with *cow*, and the final "joch" ends in the guttural *ch* of
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Scottish *loch* or German *Bach* — not a hard *k*.
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## Rugnux
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**Piz Rugnux** is a mountain in the Rhaetian Alps of canton Graubünden, in south-eastern
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Switzerland. (*Piz* is the Romansh word for "peak".) It rises above the **Albula line** of the
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**Rhaetian Railway** (*Rhätische Bahn*), part of the "Rhaetian Railway in the Albula / Bernina
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Landscapes" — a **UNESCO World Heritage Site** (*Welterbe*).
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That stretch of line is a masterpiece of throughput engineering: to climb a great deal of altitude
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in very little horizontal distance, it corkscrews through a series of **helical (spiral) tunnels**
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looping back inside the mountains. It is, again, the Swiss art of getting an enormous amount up a
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steep mountain efficiently — the same idea the data-processing side of this software is built
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around: pushing a large volume of diffraction data through the analysis pipeline.
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So the theme is consistent — **Swiss mountains, trains, and throughput** — while keeping the two
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subsystems clearly distinct: *Jungfraujoch* streams, *Rugnux* processes.
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**Pronunciation (Romansh):** *Piz Rugnux* ≈ **peets roo-NYOOKS**.
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The "gn" is a soft palatal *ñ*, as in *canyon* or Italian *gnocchi*, not two separate sounds.
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## What is Romansh?
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**Romansh** (*Rumantsch*) is the **fourth national language of Switzerland**, alongside German,
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French and Italian. It is a Romance language — a direct descendant of the spoken Latin left behind
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in the Alpine valleys — today spoken by only a few tens of thousands of people, almost all in the
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canton of Graubünden. It survives in several regional idioms, brought together in a standard form
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called *Rumantsch Grischun*. Naming the processing engine with a Romansh mountain is a small nod to
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the least-spoken but no-less-Swiss corner of the country.
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