scipp / scipp/ess

[Requirement] Data reduction for bent samples

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essreflectometry
Dominant language
Python
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2d 11h
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Description

Executive summary

We need a data reduction workflow for bent samples measured with a collimated beam.

Context and background knowledge

When doing collimated reflectometry it's possible to compute the reflectivity profile even if the sample is bent.

The method is described here: http://dx.doi.org/10.1107/S1600576715019500

Inputs

Nexus files from the measurements

Methodology

See article linked above.

Outputs

Reflectivity curve, similar to other measurements.

Which interfaces are required?

Integrated into reduction workflow

Test cases

Jos might have some test case from offspec.

Comments

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the linked methodology paper and locating the existing reduction workflow that consumes Nexus measurement files. Check the available offspec test case from Jos; done means the workflow produces a reflectivity curve for bent samples and includes a usable test case.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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