First background-free limit from a directional dark matter experiment: Results from a fully fiducialised DRIFT detector

J. B. R. Battat; J. Brack; E. Daw; A. Dorofeev; A. C. Ezeribe; J.-L. Gauvreau; M. Gold; J. L. Harton; J. M. Landers; E. Law; E. R. Lee; D. Loomba; A. Lumnah; J. A. J. Matthews; E. H. Miller; A. Monte; F. Mouton; A. StJ. Murphy; S. M. Paling; N. Phan; M. Robinson; S. W. Sadler; A. Scarff; F. G., II Schuckman; D. P. Snowden-Ifft; N. J. C. Spooner; S. Telfer; S. E. Vahsen; D. Walker; D. Warner; L. Yuriev

doi:10.1016/j.dark.2015.06.001

First background-free limit from a directional dark matter experiment: Results from a fully fiducialised DRIFT detector

J. B. R. Battat, J. Brack, E. Daw, A. Dorofeev, A. C. Ezeribe, J.-L. Gauvreau, M. Gold, J. L. Harton, J. M. Landers, E. Law, E. R. Lee, D. Loomba, A. Lumnah, J. A. J. Matthews, E. H. Miller, A. Monte, F. Mouton, A. StJ. Murphy, S. M. Paling, N. PhanM. Robinson, S. W. Sadler, A. Scarff, F. G., II Schuckman, D. P. Snowden-Ifft, N. J. C. Spooner, S. Telfer, S. E. Vahsen, D. Walker, D. Warner, L. Yuriev

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

The addition of O2 to gas mixtures in time projection chambers containing CS2 has recently been shown to produce multiple negative ions that travel at slightly different velocities. This allows a measurement of the absolute position of ionising events in the z (drift) direction. In this work, we apply the z-fiducialisation technique to a directional dark matter search. We present results from a 46.3 live-day source-free exposure of the DRIFT-IId detector run in this new mode. With full-volume fiducialisation, we have achieved the first background-free operation of a directional detector. The resulting exclusion curve for spin-dependent WIMP-proton interactions reaches 1.1 pb at 100 GeV/c2, a factor of 2 better than our previous work. We describe the automated analysis used here, and argue that detector upgrades, implemented after the acquisition of these data, will bring an additional factor of ≳ 3 improvement in the near future.

Original language	English
Pages (from-to)	1-7
Journal	Physics of the Dark Universe
Volume	9
DOIs	https://doi.org/10.1016/j.dark.2015.06.001
Publication status	Published - 1 Sept 2015

Keywords / Materials (for Non-textual outputs)

Dark matter
Time projection chamber
DRIFT

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10.1016/j.dark.2015.06.001

http://adsabs.harvard.edu/abs/2015PDU.....9....1B

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Battat, J. B. R., Brack, J., Daw, E., Dorofeev, A., Ezeribe, A. C., Gauvreau, J.-L., Gold, M., Harton, J. L., Landers, J. M., Law, E., Lee, E. R., Loomba, D., Lumnah, A., Matthews, J. A. J., Miller, E. H., Monte, A., Mouton, F., Murphy, A. S., Paling, S. M., ... Yuriev, L. (2015). First background-free limit from a directional dark matter experiment: Results from a fully fiducialised DRIFT detector. Physics of the Dark Universe, 9, 1-7. https://doi.org/10.1016/j.dark.2015.06.001

@article{3ba071d09f5941a299adb5882f678aba,

title = "First background-free limit from a directional dark matter experiment: Results from a fully fiducialised DRIFT detector",

abstract = "The addition of O2 to gas mixtures in time projection chambers containing CS2 has recently been shown to produce multiple negative ions that travel at slightly different velocities. This allows a measurement of the absolute position of ionising events in the z (drift) direction. In this work, we apply the z-fiducialisation technique to a directional dark matter search. We present results from a 46.3 live-day source-free exposure of the DRIFT-IId detector run in this new mode. With full-volume fiducialisation, we have achieved the first background-free operation of a directional detector. The resulting exclusion curve for spin-dependent WIMP-proton interactions reaches 1.1 pb at 100 GeV/c2, a factor of 2 better than our previous work. We describe the automated analysis used here, and argue that detector upgrades, implemented after the acquisition of these data, will bring an additional factor of ≳ 3 improvement in the near future.",

keywords = "Dark matter, Time projection chamber, DRIFT",

author = "Battat, {J. B. R.} and J. Brack and E. Daw and A. Dorofeev and Ezeribe, {A. C.} and J.-L. Gauvreau and M. Gold and Harton, {J. L.} and Landers, {J. M.} and E. Law and Lee, {E. R.} and D. Loomba and A. Lumnah and Matthews, {J. A. J.} and Miller, {E. H.} and A. Monte and F. Mouton and Murphy, {A. StJ.} and Paling, {S. M.} and N. Phan and M. Robinson and Sadler, {S. W.} and A. Scarff and Schuckman, {F. G., II} and Snowden-Ifft, {D. P.} and Spooner, {N. J. C.} and S. Telfer and Vahsen, {S. E.} and D. Walker and D. Warner and L. Yuriev",

year = "2015",

month = sep,

day = "1",

doi = "10.1016/j.dark.2015.06.001",

language = "English",

volume = "9",

pages = "1--7",

journal = "Physics of the Dark Universe",

issn = "2212-6864",

publisher = "Elsevier",

}

Battat, JBR, Brack, J, Daw, E, Dorofeev, A, Ezeribe, AC, Gauvreau, J-L, Gold, M, Harton, JL, Landers, JM, Law, E, Lee, ER, Loomba, D, Lumnah, A, Matthews, JAJ, Miller, EH, Monte, A, Mouton, F, Murphy, AS, Paling, SM, Phan, N, Robinson, M, Sadler, SW, Scarff, A, Schuckman, FGII, Snowden-Ifft, DP, Spooner, NJC, Telfer, S, Vahsen, SE, Walker, D, Warner, D & Yuriev, L 2015, 'First background-free limit from a directional dark matter experiment: Results from a fully fiducialised DRIFT detector', Physics of the Dark Universe, vol. 9, pp. 1-7. https://doi.org/10.1016/j.dark.2015.06.001

TY - JOUR

T1 - First background-free limit from a directional dark matter experiment: Results from a fully fiducialised DRIFT detector

AU - Battat, J. B. R.

AU - Brack, J.

AU - Daw, E.

AU - Dorofeev, A.

AU - Ezeribe, A. C.

AU - Gauvreau, J.-L.

AU - Gold, M.

AU - Harton, J. L.

AU - Landers, J. M.

AU - Law, E.

AU - Lee, E. R.

AU - Loomba, D.

AU - Lumnah, A.

AU - Matthews, J. A. J.

AU - Miller, E. H.

AU - Monte, A.

AU - Mouton, F.

AU - Murphy, A. StJ.

AU - Paling, S. M.

AU - Phan, N.

AU - Robinson, M.

AU - Sadler, S. W.

AU - Scarff, A.

AU - Schuckman, F. G., II

AU - Snowden-Ifft, D. P.

AU - Spooner, N. J. C.

AU - Telfer, S.

AU - Vahsen, S. E.

AU - Walker, D.

AU - Warner, D.

AU - Yuriev, L.

PY - 2015/9/1

Y1 - 2015/9/1

N2 - The addition of O2 to gas mixtures in time projection chambers containing CS2 has recently been shown to produce multiple negative ions that travel at slightly different velocities. This allows a measurement of the absolute position of ionising events in the z (drift) direction. In this work, we apply the z-fiducialisation technique to a directional dark matter search. We present results from a 46.3 live-day source-free exposure of the DRIFT-IId detector run in this new mode. With full-volume fiducialisation, we have achieved the first background-free operation of a directional detector. The resulting exclusion curve for spin-dependent WIMP-proton interactions reaches 1.1 pb at 100 GeV/c2, a factor of 2 better than our previous work. We describe the automated analysis used here, and argue that detector upgrades, implemented after the acquisition of these data, will bring an additional factor of ≳ 3 improvement in the near future.

AB - The addition of O2 to gas mixtures in time projection chambers containing CS2 has recently been shown to produce multiple negative ions that travel at slightly different velocities. This allows a measurement of the absolute position of ionising events in the z (drift) direction. In this work, we apply the z-fiducialisation technique to a directional dark matter search. We present results from a 46.3 live-day source-free exposure of the DRIFT-IId detector run in this new mode. With full-volume fiducialisation, we have achieved the first background-free operation of a directional detector. The resulting exclusion curve for spin-dependent WIMP-proton interactions reaches 1.1 pb at 100 GeV/c2, a factor of 2 better than our previous work. We describe the automated analysis used here, and argue that detector upgrades, implemented after the acquisition of these data, will bring an additional factor of ≳ 3 improvement in the near future.

KW - Dark matter

KW - Time projection chamber

KW - DRIFT

U2 - 10.1016/j.dark.2015.06.001

DO - 10.1016/j.dark.2015.06.001

M3 - Article

SN - 2212-6864

VL - 9

SP - 1

EP - 7

JO - Physics of the Dark Universe

JF - Physics of the Dark Universe

ER -

First background-free limit from a directional dark matter experiment: Results from a fully fiducialised DRIFT detector

Abstract

Keywords / Materials (for Non-textual outputs)

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