Background Assay and Rejection in DRIFT

被引：2

作者：

Brack, J. ^{[1
]}

Daw, E. ^{[2
]}

Dorofeev, A. ^{[1
]}

Ezeribe, A. ^{[2
]}

Gauvreau, J. -L. ^{[3
]}

Gold, M. ^{[4
]}

Harton, J. ^{[1
]}

Lafler, R. ^{[4
]}

Lauer, R. ^{[4
]}

Lee, E. R. ^{[4
]}

Loomba, D. ^{[4
]}

Matthews, J. ^{[4
]}

Miller, E. H. ^{[4
]}

Monte, A. ^{[3
]}

Murphy, A. ^{[5
]}

Paling, S. ^{[6
]}

Phan, N. ^{[4
]}

Sadler, S. ^{[2
]}

Scarff, A. ^{[2
]}

Snowden-Ifft, D. ^{[3
]}

Spooner, N. ^{[2
]}

Telfer, S. ^{[2
]}

Walker, D. ^{[2
]}

Williams, M. ^{[1
]}

Yuriev, L. ^{[2
]}

机构：

[1] Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA

[2] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England

[3] Occidental Coll, Dept Phys, Los Angeles, CA 90041 USA

[4] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA

[5] Univ Edinburgh, Sch Phys & Astron, SUPA, Edinburgh EH9 3JZ, Midlothian, Scotland

[6] Boulby Underground Sci Facil, Saltburn By The Sea TS13 4UZ, Cleveland, England

来源：

13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 | 2015年 / 61卷

关键词：

Radon; Dark Matter; TPC; DRIFT; DARK-MATTER DETECTOR; PARTICLES;

D O I：

10.1016/j.phpro.2014.12.022

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The DRIFT-IId dark matter detector is a m(3)-scale low-pressure TPC with directional sensitivity to WIMP-induced nuclear recoils. Its primary backgrounds were due to alpha decays from contamination on the central cathode. Efforts to reduce these backgrounds led to replacing the 20 mu m wire central cathode with one constructed from 0.9 mu m aluminized mylar, which is almost totally transparent to alpha particles. Detailed modeling of the nature and origin of the remaining backgrounds led to an in-situ, ppt-sensitive assay of alpha decay backgrounds from the central cathode. This led to further improvements in the thin-film cathode resulting in over 2 orders of magnitude reduction in backgrounds compared to the wire cathode. Finally, the addition of O-2 to CS2 gas was found to produce multiple species of electronegative charge carriers, providing a method to determine the absolute position of nuclear recoils and reject all known remaining backgrounds while retaining a high efficiency for nuclear recoil detection. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：130 / 137

页数：8

共 14 条

[1] The DRIFT-II dark matter detector:: Design and commissioning [J].

Alner, GJ ;

Araujo, H ;

Bewick, A ;

Burgos, S ;

Carson, MJ ;

Davies, JC ;

Daw, E ;

Dawson, J ;

Forbes, J ;

Gamble, T ;

Garcia, M ;

Ghag, C ;

Gold, M ;

Hollen, S ;

Hollingworth, RJ ;

Howard, AS ;

Kirkpatrick, JA ;

Kudryavtsev, VA ;

Lawson, TB ;

Lebedenko, V ;

Lewin, JD ;

Lightfoot, PK ;

Liubarsky, I ;

Loomba, D ;

Lüscher, R ;

McMillan, JE ;

Morgan, B ;

Muna, D ;

Murphy, AS ;

Nicklin, GG ;

Paling, SM ;

Petkov, A ;

Plank, SJS ;

Preece, RM ;

Quenby, JJ ;

Robinson, M ;

Sanghi, N ;

Smith, NJT ;

Smith, PF ;

Snowden-Ifft, DP ;

Spooner, NJC ;

Sumner, TJ ;

Tovey, DR ;

Turk, J ;

Tzaferi, E ;

Walker, RJ .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2005, 555 (1-2) :173-183

[2] Track reconstruction and performance of DRIFT directional dark matter detectors using alpha particles [J].

Burgos, S. ;

Forbes, J. ;

Ghag, C. ;

Gold, M. ;

Kudryavtsev, V. A. ;

Lawson, T. B. ;

Loomba, D. ;

Majewski, P. ;

Muna, D. ;

Murphy, A. St J. ;

Nicklin, G. G. ;

Paling, S. M. ;

Petkov, A. ;

Plank, S. J. S. ;

Robinson, M. ;

Sanghi, N. ;

Smith, N. J. T. ;

Snowden-Ifft, D. P. ;

Spooner, N. J. C. ;

Sumner, T. J. ;

Turk, J. ;

Tziaferi, E. .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2008, 584 (01) :114-128

[3] Studies of neutron detection and backgrounds with the DRIFT-IIa dark matter detector [J].

Burgos, S. ;

Forbes, J. ;

Ghag, C. ;

Gold, M. ;

Kudryavtsev, V. A. ;

Lawson, T. B. ;

Loomba, D. ;

Majewski, P. ;

Muna, D. ;

Murphy, A. Stj. ;

Nicklin, G. G. ;

Paling, S. M. ;

Petkov, A. ;

Plank, S. J. S. ;

Robinson, M. ;

Sanghi, N. ;

Smith, N. J. T. ;

Snowden-Ifft, D. P. ;

Spooner, N. J. C. ;

Sumner, T. J. ;

Turk, J. ;

Tziaferi, E. .

ASTROPARTICLE PHYSICS, 2007, 28 (4-5) :409-421

[4] Spin-dependent limits from the DRIFT-IId directional dark matter detector [J].

Daw, E. ;

Fox, J. R. ;

Gauvreau, J. -L. ;

Ghag, C. ;

Harmon, L. J. ;

Gold, M. ;

Lee, E. R. ;

Loomba, D. ;

Miller, E. H. ;

Murphy, A. Stj. ;

Paling, S. M. ;

Landers, J. M. ;

Pipe, M. ;

Pushkin, K. ;

Robinson, M. ;

Snowden-Ifft, D. P. ;

Spooner, N. J. C. ;

Walker, D. .

ASTROPARTICLE PHYSICS, 2012, 35 (07) :397-401

[5] ELASTIC SUPERSYMMETRIC RELIC-NUCLEUS SCATTERING REVISITED [J].

ELLIS, J ;

FLORES, RA .

PHYSICS LETTERS B, 1991, 263 (02) :259-266

[6] Suppressing drift chamber diffusion without magnetic field [J].

Martoff, CJ ;

Snowden-Ifft, DP ;

Ohnuki, T ;

Spooner, N ;

Lehner, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2000, 440 (02) :355-359

[7]

Miller E., 2011, POS IDM2010

[8]

Miller Elizabeth Ashley, THESIS

[9]

Murphy A., 2012, NUCL PHYS NEWS, V22, P19, DOI DOI 10.1080/10619127.2011.629920

[10] High precision measurements of carbon disulfide negative ion mobility and diffusion [J].

Snowden-Ifft, D. P. ;

Gauvreau, J. -L. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2013, 84 (05)

← 1 2 →