1. Proposed low-energy absolute calibration of nuclear recoils in a dual-phase noble element TPC using [formula omitted] neutron scattering kinematics.
- Author
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Verbus, J.R., Rhyne, C.A., Malling, D.C., Genecov, M., Ghosh, S., Moskowitz, A.G., Chan, S., Chapman, J.J., de Viveiros, L., Faham, C.H., Fiorucci, S., Huang, D.Q., Pangilinan, M., Taylor, W.C., and Gaitskell, R.J.
- Subjects
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ATOMIC interactions , *TIME projection chambers (Nuclear physics) , *NEUTRON scattering , *DARK matter , *GALACTIC halos - Abstract
We propose a new technique for the calibration of nuclear recoils in large noble element dual-phase time projection chambers used to search for WIMP dark matter in the local galactic halo. This technique provides an in situ measurement of the low-energy nuclear recoil response of the target media using the measured scattering angle between multiple neutron interactions within the detector volume. The low-energy reach and reduced systematics of this calibration have particular significance for the low-mass WIMP sensitivity of several leading dark matter experiments. Multiple strategies for improving this calibration technique are discussed, including the creation of a new type of quasi-monoenergetic neutron source with a minimum possible peak energy of 272 keV. We report results from a time-of-flight-based measurement of the neutron energy spectrum produced by an Adelphi Technology, Inc. DD108 neutron generator, confirming its suitability for the proposed nuclear recoil calibration. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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