MicroBooNE Document 199-v2

Space Charge in Ionization Detectors

Document #:
Document type:
Design or Technical Note
Submitted by:
Kirk McDonald
Updated by:
Kirk McDonald
Document Created:
19 Nov 2008, 16:24
Contents Revised:
01 Jun 2016, 22:42
DB Info Revised:
01 Jun 2016, 22:42
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  • Public document
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We deduce the steady-state electric field distribution E(x) in an ionization detector (whose nominal field, E_0, is uniform over the length D of the detector) as affected by the positive-ion space charge density.

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Notes and Changes:
V1 is a 1-dimensional approximation.
V2 adds a brief comment about how space charge in a 3-d detector results in straight tracks appearing to be curved, and adds a reference to the related topic of charging of insulators in the liquid argon outside the active volume (DocDB 5898).
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