Skip to content

protodune wire geometry v3 has order errors #2

@brettviren

Description

@brettviren

Induction wires with segment 1 are wrongly ordered in protodune-wires-larsoft-v3.json.bz2

The intention is that all wires are always ordered such that (wire)X(pitch) = (face normal) where normal points into the drift volume (ie, anti-parallel to drift direction).

The v3 sorting used the simple assumption that wire-center should increase in (local) Z. This works for MB but fails on segment-1 wires in DUNE SP as the segment-1 wires have degenerate Z values.

This bug will hit any code that relies on this ordering. In particular, fast spatial lookup of nearest wire in the sim and similar calculations in imaging.

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions