Negative Ion Drift and Diffusion in a TPC near 1 Bar

C. J. Martoff; R. Ayad; M. Katz-Hyman; G. Bonvicini; A. Schreiner

doi:10.1016/j.nima.2005.08.103

Negative Ion Drift and Diffusion in a TPC near 1 Bar

Instrumentation and Detectors 2009-11-10 v1

Authors: C. J. Martoff , R. Ayad , M. Katz-Hyman , G. Bonvicini , A. Schreiner

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Abstract

Drift velocity and longitudinal diffusion measurements are reported for a Negative Ion TPC (NITPC) operating with Helium + carbon disulfide gas mixtures at total pressures from 160 to 700 torr. Longitudinal diffusion at the thermal-limit was observed for drift fields up to at least 700 V/cm in all gas mixtures tested. The results are of particular interest in connection with mechanical simplification of Dark Matter searches such as DRIFT, and for high energy physics experiments in which a low-Z, low density, gaseous tracking detector with no appreciable Lorentz drift is needed for operation in very high magnetic fields.

Keywords

radiation damage in silicon thermal properties of materials plasma physics

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@article{arxiv.physics/0406114,
  title  = {Negative Ion Drift and Diffusion in a TPC near 1 Bar},
  author = {C. J. Martoff and R. Ayad and M. Katz-Hyman and G. Bonvicini and A. Schreiner},
  journal= {arXiv preprint arXiv:physics/0406114},
  year   = {2009}
}

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7 pages, 3 figures

Negative Ion Drift and Diffusion in a TPC near 1 Bar

Abstract

Keywords

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