Assertion: detector's advantage | /r/HasProperty | suppression of positive ions
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Source sentences:
text: The advantages of GEMs, compared to multiwire proportional chambers, include: ease of manufacturing, since large-area GEMs can in principle be mass-produced, while wire chambers require labor-intensive and error-prone assembly; flexible geometry, both for the GEM and the readout pads; and suppression of positive ions, which was a source of field distortions in time-projection chambers operated at high rates.